CN107168905A - A kind of document display method, device, storage medium and mobile terminal - Google Patents

Abstract

The embodiment of the invention discloses a file display method, device, storage medium and mobile terminal. The method includes: receiving the first message sent by the MTP originator, feeding back the access interface of the preset virtual directory structure to the MTP originator, and initiating to the MTP when receiving an access request for the preset virtual directory structure sent by the MTP originator The terminal feeds back the folder information in the preset virtual directory structure, so that the MTP initiator displays the corresponding folder; when receiving the MTP initiator’s access request for the displayed target folder, obtains the corresponding The file handle of the file, and feed back the obtained file handle to the MTP originator, so that the MTP originator can display the corresponding file. The embodiment of the present invention can improve file access and display efficiency by adopting the above technical solution.

Description

A file display method, device, storage medium and mobile terminal

technical field

The embodiments of the present invention relate to the field of computer technology, and in particular to a file display method, device, storage medium and mobile terminal.

Background technique

In order to conveniently view and manage files on the mobile terminal, many users usually connect the mobile terminal to a terminal such as a personal computer (Personal Computer, PC), and perform related operations on the PC.

At present, the Media Transfer Protocol (MTP) is the most common media file transfer protocol. It was proposed by Microsoft Corporation. Electronic devices supporting the MTP protocol can perform media file transfer based on the interface provided by the MTP protocol. The application of MTP is divided into two roles, one is as an initiator, such as a PC or a notebook, and the other is a responder, such as a mobile phone or a digital camera. When the electronic device communicates through MTP, the screen of the Initiator can display the folders and files in each storage directory in the Responder. However, the storage space of current mobile terminals is getting larger and larger, and the memory used has gradually developed from 4G a few years ago to 256G or even larger today. According to the development of Moore's law, the storage space will be calculated by T in the near future. Followed by the storage of a huge number of files, it is difficult to adapt to the existing MTP-based file display strategy.

Contents of the invention

Embodiments of the present invention provide a file display method, device, storage medium and mobile terminal, which can solve and optimize the existing MTP-based file display solution.

In a first aspect, an embodiment of the present invention provides a file display method, including:

receiving the first message sent by the media transfer protocol MTP initiator;

Feedback an access interface of a preset virtual directory structure of the MTP responder to the MTP initiator according to the first message, wherein the preset virtual directory structure includes folders of preset categories;

When receiving the access request for the preset virtual directory structure sent by the MTP initiator, feed back the folder information in the preset virtual directory structure to the MTP initiator, so that the MTP initiator Display the corresponding folder;

When receiving the MTP initiator's access request for the displayed target folder, obtain the file handle of the file corresponding to the target folder, and feed back the acquired file handle to the MTP initiator to Make the MTP initiator display the corresponding file.

In a second aspect, an embodiment of the present invention provides a file display device, including:

A message receiving module, configured to receive the first message sent by the media transfer protocol MTP initiator;

An access interface feedback module, configured to feed back the access interface of the preset virtual directory structure of the MTP responder to the MTP initiator according to the first message, wherein the preset virtual directory structure includes folders of preset categories;

A folder information feedback module, configured to feed back folder information in the preset virtual directory structure to the MTP initiator when receiving an access request for the preset virtual directory structure sent by the MTP initiator , so that the MTP initiator displays the corresponding folder;

The file handle feedback module is used to obtain the file handle of the file corresponding to the target folder when receiving the access request of the MTP initiator for the displayed target folder, and feed back the acquired file handle to The MTP initiator, so that the MTP initiator displays the corresponding file.

In a third aspect, a computer-readable storage medium stores a computer program thereon, wherein the program implements the file display method provided by the embodiment of the present invention when the program is executed by a processor.

In a fourth aspect, an embodiment of the present invention provides a mobile terminal, including a memory, a processor, and a computer program stored on the memory and operable by the processor, wherein the computer program is implemented when the processor executes the computer program The file display method provided by the embodiment of the present invention.

The file display scheme provided in the embodiment of the present invention, when receiving the first message sent by the MTP initiator, feeds back the access interface of the preset virtual directory structure of the MTP responder that contains the preset classification folders, and when receiving the MTP initiator When the access request for the preset virtual directory structure is sent by the terminal, the corresponding folder information is fed back to the MTP initiator, so that the MTP initiator displays the corresponding folder. When receiving the access request of the MTP initiator for the target folder , acquire the file handle of the corresponding file and feed it back to the MTP initiator, so that the MTP initiator displays the corresponding file. By adopting the above technical solution, the user can be provided with a quick access interface of folders with preset categories, which is convenient for the user to quickly access the files of the category they are interested in, and improves the efficiency of file access and display.

Description of drawings

FIG. 1 is a schematic flowchart of a file display method provided by an embodiment of the present invention;

Fig. 2 is a kind of MTP protocol stack schematic diagram that the embodiment of the present invention provides;

FIG. 3 is a schematic diagram of a MTP command processing flow provided by an embodiment of the present invention;

FIG. 4 is a schematic flowchart of a file display method provided by an embodiment of the present invention;

FIG. 5 is a structural block diagram of a file display device provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a mobile terminal provided by an embodiment of the present invention.

detailed description

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the steps as sequential processing, many of the steps may be performed in parallel, concurrently, or simultaneously. Additionally, the order of steps may be rearranged. The process may be terminated when its operations are complete, but may also have additional steps not included in the figure. The processing may correspond to a method, function, procedure, subroutine, subroutine, or the like.

Fig. 1 is a schematic flowchart of a file display method provided by an embodiment of the present invention. The method can be executed by a file display device, wherein the device can be implemented by software and/or hardware, and generally can be integrated in a mobile terminal. As shown in Figure 1, the method includes:

Step 101. Receive a first message sent by an MTP initiator.

Exemplarily, the mobile terminal in this embodiment may specifically be devices such as mobile phones, smart watches, tablet computers, game consoles, personal digital assistants, and digital multimedia players.

The application of MTP is divided into two roles, one as the initiator Initiator; the other as the responder Responder. Usually, the initiating end and the responding end can be connected through a universal serial bus (Universal Serial Bus, USB). The initiating end usually refers to a USB Host (host), such as a PC or a notebook computer, etc.; the responding end may be a mobile terminal in an embodiment of the present invention. The MTP protocol stipulates that all MTP operations are initiated by the Initator, and the role of the Responder in the MTP includes processing the request initiated by the Initator. At the same time, it will also send an Event (event) to notify the Initator according to the change of its own state.

Exemplarily, the first message may be a newly added message for displaying the preset virtual directory structure access interface described in the embodiment of the present invention according to actual needs, or it may be an original message in the MTP. The present invention There is no specific limitation in this embodiment. When the MTP responder receives the first message, it responds according to the first message. It should be noted that when the first message is an original message in the MTP, the original response strategy of the MTP responder can be changed to implement the subsequent steps of the embodiment of the present invention.

Step 102: Feed back the access interface of the preset virtual directory structure of the MTP responder to the MTP initiator according to the first message.

Wherein, the preset virtual directory structure includes folders of preset categories.

Exemplarily, the preset categories can be set by default by the system, or can be set independently by the user according to individual needs. For example, before receiving the first message sent by the MTP initiator, it may also include: changing the preset virtual directory structure according to the user's setting operation, and the setting operation includes adding, reducing or modifying the preset virtual directory structure. Folder containing preset categories.

Optionally, the preset categories can include pictures, videos, audios, documents, installation packages, compressed packages, etc. classified by storage type; it can also include WeChat sending and receiving files, QQ sending and receiving files, and email sending and receiving files, etc. to respond in the MTP It can also include classifications that are distinguished by file attributes such as recent changes, recent accesses, and file sizes. The preset categories may also include other categories, which are not limited in this embodiment of the present invention. It can be understood that the files corresponding to the folders of different preset categories may be repeated. For example, picture A may correspond to both the picture folder and the WeChat send and receive folder, and may also correspond to the recently changed folder. In addition, the above-mentioned classifications can also be combined, for example, recently visited pictures and the like.

Exemplarily, the access interface may be an interface existing in the form of a drive letter, an interface existing in the form of a folder, or an interface existing in the form of an icon or the like. An access request to the preset virtual directory structure corresponding to the access interface may be initiated through a preset operation (such as an operation in the form of clicking, long-pressing, or double-clicking) acting on the access interface.

Preferably, after receiving the first message sent by the MTP initiator, an access interface for feeding back the storage directory structure of the MTP responder to the MTP initiator according to the first message may also be included. The storage directory structure can be understood as the actual storage directory structure. In the MTP response terminal, files usually have their own storage logic, and all files are stored according to the storage logic. For example, files in most Android mobile phones are stored in units of applications, and files involved in the same application are usually stored in a file directory corresponding to the application. The advantage of the optimization here in the embodiment of the present invention is that the preset virtual directory structure usually contains folders that are commonly used or interested by users, and generally does not cover all files. In addition to providing the access interface of the preset virtual directory structure , and also provides an access interface for storing the directory structure, which can provide users with a comprehensive file access path and ensure that users can view all files.

Further, the first message is a drive letter acquisition command. Feedback the access interface of the preset virtual directory structure of the MTP responder to the MTP initiator according to the first message, including: feeding back the preset virtual directory structure of the MTP responder to the MTP initiator according to the drive letter acquisition command The first letter. The access interface for feeding back the storage directory structure of the MTP responder to the MTP initiator according to the first message, including: feeding back the second drive letter of the storage directory structure of the MTP responder to the MTP initiator according to the drive letter acquisition command , the second disk letter is different from the first disk letter. The advantage of optimization here is that the access interfaces are distinguished by drive letters, which makes it easy for users to quickly find different access interfaces. Preferably, the name of the first drive letter can be "quick access", "quick display" or "frequently used files", etc., to provide simple and clear prompts for users.

Preferably, the access authority of the first drive letter is read-only, and the remaining space is 0. The advantage of this setting is that it prevents the user from affecting the original storage directory structure of the MTP response terminal by operating the files in the first drive letter, and ensures the stability and security of file storage in the MTP response terminal.

Step 103: When receiving the access request for the preset virtual directory structure sent by the MTP initiator, feed back folder information in the preset virtual directory structure to the MTP initiator, so that the MTP initiator displays corresponding folders.

Exemplarily, the folder information may be a folder name or a folder handle. The folder information can be encapsulated in a data packet (Package), and the data packet containing the folder information is fed back to the MTP originator, and the MTP originator parses the data packet and displays the folder corresponding to the folder information. For example, the folder information in the preset virtual directory structure includes pictures, videos, audios, documents, installation packages, compressed packages, WeChat sending and receiving files, QQ sending and receiving files, email sending and receiving files, and recent changes, then on the screen of the MTP initiator, you can These folders are also displayed.

Step 104, when receiving the access request from the MTP initiator for the displayed target folder, obtain the file handle of the file corresponding to the target folder, and feed back the acquired file handle to the MTP initiator, so that the MTP can initiate The corresponding file is displayed on the terminal.

Exemplarily, an access request to the file corresponding to the target folder may be initiated through a preset operation (such as an operation in the form of clicking, long pressing, or double-clicking) acting on the target folder. For example, when a user double-clicks a picture folder, the MTP initiator will send an access request to the MTP responder for the picture folder, and the MTP responder will obtain the file handles of all picture files and feed them back to the MTP initiator, then the MTP initiator can view the file on the screen. Display all image files.

The file display method provided in the embodiment of the present invention, when receiving the first message sent by the MTP initiating end, feeds back the access interface of the preset virtual directory structure of the MTP responding end that contains the preset classification folder, and receives the MTP initiating When the access request for the preset virtual directory structure is sent by the terminal, the corresponding folder information is fed back to the MTP initiator, so that the MTP initiator displays the corresponding folder. By adopting the above technical solution, the user can be provided with a quick access interface of folders with preset categories, which is convenient for the user to quickly access the files of the category they are interested in, and improves the efficiency of file access and display.

On the basis of the above embodiments, when receiving the MTP initiator's access request for the displayed target folder, obtain the file handle of the file corresponding to the target folder, and feed back the obtained file handle To the MTP originator, so that the MTP originator displays the corresponding file may include any one or more of the following:

1. When receiving an access request from the MTP initiator for the displayed first folder, obtain the file type corresponding to the first folder; search for the file in the storage directory structure of the MTP responder type matching files, and feed back the file handle corresponding to the found file to the MTP initiator, so that the MTP initiator displays the corresponding file. File types may include pictures, videos, audios, documents, installation packages, compressed packages, etc. Exemplarily, taking the file type as a picture as an example, the storage directory structure can be searched through the extension of the picture file (such as .jpg, .bmp, .gif, .jpeg, and .GIFf, etc.).

2. When receiving the access request of the MTP initiator for the displayed second folder, obtain the storage path corresponding to the second folder in the storage directory structure of the MTP response end; obtain the storage path The file handle of the file contained in , and feed back the obtained file handle to the MTP initiator, so that the MTP initiator displays the corresponding file. Take WeChat sending and receiving files as an example, such files are usually stored in the directory corresponding to the WeChat application, but there are often nested folders. Therefore, it is very troublesome for users to find WeChat sending and receiving files in the storage directory structure, and often requires It takes time and effort to open multiple folders or multi-layer folders to find, but in the embodiment of the present invention, the second folder in the preset virtual directory structure can be associated with the corresponding storage path of the file in the storage directory structure, so that When the user accesses the second folder, the MTP responder can directly find the file in the corresponding storage path and obtain the file handle to feed back to the MTP initiator, that is, directly obtain the storage path of the WeChat send and receive file in the storage directory structure and obtain the file handle Feedback to the MTP initiator, so as to quickly view the files sent and received by WeChat.

3. When receiving an access request from the MTP initiator for the displayed third folder, obtain a preset range of file attributes corresponding to the third folder, where the file attributes include modification time, access time, or File size; search for files matching the preset range in the storage directory structure of the MTP response end, and feed back the file handle corresponding to the found file to the MTP initiator, so that the MTP initiates The corresponding file is displayed on the terminal. Wherein, the preset range may be the range of the number of files, the start and end range of the time, or the numerical range of the file size, etc. For example, if the file number range is 10 and the file attribute is modification time, the 10 most recently modified files can be displayed. Another example is that the start and end range of the time is within 24 hours, and the file attribute is the access time, then the files accessed within the last 24 hours can be displayed. If the value range of the file size is above 500M, and the file attribute is file size, all files with a capacity above 500M can be displayed, which is convenient for users to centrally view files that occupy a large amount of storage space.

The specific methods for displaying three different types of folders are provided above, and the method of obtaining file handles can be selected according to their respective characteristics, so as to achieve the purpose of displaying files corresponding to different types of folders.

In order to strengthen the understanding of the embodiment of the present invention, further description will be made below by taking the MTP initiator as a PC and the MTP responder as an example. Wherein, the smart phone may be a mobile phone loaded with an Android operating system.

First, the MTP protocol stack is introduced. FIG. 2 is a schematic diagram of an MTP protocol stack provided by an embodiment of the present invention. The MTP protocol stack includes a physical layer, a transport layer, and a command layer from bottom to top.

Pyshical Layer (physical layer): The physical layer is used to transmit data in the MTP protocol. There are currently three physical layers available for MTP. They are USB, Internet Protocol (Internet Protocol, IP) and Bluetooth (Bluetooth, BT) respectively. The main feature of USB is that it is fast when transferring files and synchronizing media files, and it can be charged while working. It is an ideal transmission method in the home network; Bluetooth, that is, MTP/BT, is more power-saving, but it is also the slowest transmission method and has fewer applications. Therefore, the embodiment of the present invention preferably adopts the USB mode.

Transport layer: In MTP, the data transmission format follows the Picture Transfer Protocol (Picture Transfer Protocol, PTP) (USB Still Image Class, describing USB still image capture behavior).

Command layer: implements various commands in the MTP protocol, for details, please refer to the relevant description in the MTP Spec.

MTP works in a command-response mode (Initator sends commands to Responder for processing, and Responder feeds back processing results). The main features of this mode are: all MTP commands are transmitted at both ends of the device in the form of Package (data packet). The Initiator must receive the processing result of the previous message (either success or timeout) before sending the next message.

Taking PC to open a file through MTP as an example, Fig. 3 is a schematic diagram of a kind of MTP command processing flow provided by the embodiment of the present invention, the default MTP command processing flow is: after the mobile terminal MTP starts, MtpServer::run in MtpServer.cpp () will continuously read "messages from PC" from "/dev/mtp_usb" through read(). After read() reads the message from the PC, it will be handed over to MtpServer::handleRequest() for processing. Different processing is done according to the ID of the message "PC reads file content". Commonly used IDs include:

MTP_OPERATION_GET_DEVICE_INFO

MTP_OPERATION_OPEN_SESSION

MTP_OPERATION_CLOSE_SESSION

MTP_OPERATION_GET_STORAGE_IDS

MTP_OPERATION_GET_STORAGE_INFO

MTP_OPERATION_GET_NUM_OBJECTS

MTP_OPERATION_GET_OBJECT_HANDLES

MTP_OPERATION_GET_OBJECT_INFO

MTP_OPERATION_GET_OBJECT

In the process of opening the file, the ID of the message "PC reads the file content" in Figure 3 is MTP_OPERATION_GET_OBJECT; therefore, it will be processed by doGetObject(), and doGetObject() will call getObjectFilePath(), and getObjectFilePath() will get it from the MediaProvider Find the corresponding file in the database MtpDatabase.java, and finally complete the transfer of the file content through ioctl().

The following is a brief introduction to the interaction between PC and mobile phone:

(1) When the mobile phone is connected to the PC for the first time, the Initiator (that is, the PC) will first send a request named GetDeviceInfo to obtain the information of the mobile phone, which includes the degree of PTP version supported by the mobile phone, expressed in percent signs ( The default is 100), supported MTP commands (Operation Supported), and supported Event types, etc.

(2) The PC end will send an OpenSession command to create a session, which will be kept until the mobile phone is disconnected from the PC. All subsequent commands (except the GetDeviceInfo command) must be sent while the session is alive. A session is identified by SessionID in the MTP protocol, which is a 32-bit unsigned integer, selected by the PC and sent to the mobile phone.

(3) The PC side needs to return the StorageID corresponding to a certain drive letter through the GetStorageIDs command. In MTP, StorageID is a 32-bit unsigned integer, and each StorageID represents a logical drive letter. According to the StorageID number in the previous step, the PC can use the GetStorageInfo operation to obtain storage device information, such as remaining storage space, file system type, and access rights.

(4) The PC obtains the handle ObjectHandles of files and subdirectories under this drive letter through the GetObjectHandles command (an Object Handle represents a file or directory. This value is generated by Responder and uniqueness is guaranteed).

(5) The PC transmits the file information (such as file name and file size) to the mobile phone through the SendObjectInfo command. The mobile phone needs to check whether the target directory has enough space and corresponding permissions. If everything is normal, the PC will pass the data to the mobile phone through SendObject. It is the Responder in the mobile phone that actually writes files to the device storage space.

(6) After the transfer of the media file is completed, the mobile phone updates the information into the media database.

In the embodiment of the present invention, in order to achieve the purpose of fast browsing, improvements are mainly made at the command layer.

For the above (3), when the mobile phone receives MTP_OPERATION_GET_NUM_OBJECTS, the mobile phone will add one to the total number of Storage in the current mobile phone when processing, that is, return one more Storage for quick display. That is, the corresponding drive letter of the original Storage of the mobile phone is the second drive letter (the number is not limited) described in the embodiment of the present invention, and the corresponding drive letter of the Storage used for quick display is the first drive letter described in the embodiment of the present invention. A drive letter (usually 1).

When the mobile phone receives MTP_OPERATION_GET_STORAGE_IDS and MTP_OPERATION_GET_STORAGE_INFO, the mobile terminal parses, if the PC wants to access the id of the storage that is displayed quickly (that is, the first drive letter), it returns the information of the virtual storage that is quickly displayed: the access permission is read-only, and the remaining The space is 0, and the name is "quick access" or "frequently used files", indicating the storage name for quick display.

For the above (4) when the mobile phone receives the access request MTP_OPERATION_GET_OBJECT, the current session accesses the storage ID displayed quickly. If it is the root directory of the access (that is, the access to the first drive letter), the current virtual directory structure is returned: picture , video, document, audio, installation package, compressed package, latest changed files, WeChat sending and receiving files, QQ sending and receiving files and email sending and receiving files. The virtual directory structure supports user editing. The user can add directory names and corresponding file types or directories, recently changed files, and supports users to modify the displayed number.

When the mobile phone receives the access request MTP_OPERATION_GET_OBJECT_HANDLES, the current session accesses the id of the storage that is displayed quickly. If the accessed directory is a picture, search all the pictures in the mobile phone's media library, and feed back the handle of the search result to the PC. If the access is video, document, audio, installation package, compressed package, just change the corresponding database search keyword.

When the mobile phone receives the access request MTP_OPERATION_GET_OBJECT_HANDLES, the current session accesses the storage id that is quickly displayed. If the accessed directory is WeChat send and receive files, QQ send and receive files, email send and receive files, etc., the handle of the corresponding actual file directory will be fed back to the PC .

When the mobile phone receives the access request MTP_OPERATION_GET_OBJECT_HANDLES, the current session accesses the id of the storage that is quickly displayed. If the accessed directory is the recently changed document, search for the recently modified file in the mobile phone’s media library according to the number of displayed files set by the user. , and feed back the handle of the search result to the PC.

FIG. 4 is a schematic flowchart of a file display method provided by an embodiment of the present invention, and FIG. 4 shows an interaction process between an MTP initiator and an MTP responder in an embodiment of the present invention.

In step 401, after the MTP initiator detects that it has established a connection with the MTP responder, it sends a device information acquisition request to the MTP responder.

In step 402, the MTP responder feeds back device information to the MTP initiator.

Step 403, the MTP initiator creates a session, and sends a drive letter acquisition command to the MTP responder.

Step 404: The MTP responder feeds back the first drive letter of the preset virtual directory structure and the second drive letter of the storage directory structure to the MTP initiator.

Step 405: The MTP initiator displays the first drive letter and the second drive letter on the screen, and sends a first access request for the preset virtual directory structure to the MTP responder when detecting that the user double-clicks the first drive letter.

It should be noted that the user can also double-click the second drive letter to access the files or folders therein. The embodiment of the present invention takes double-click as an example, but it is not limited to the double-click manner, and there may be other manners.

Step 406: The MTP responder feeds back folder information in the preset virtual directory structure to the MTP initiator according to the first access request.

Step 407: The MTP initiator displays all folders corresponding to the preset virtual directory structure according to the folder information, and sends a second access request for the target folder to the MTP responder when detecting that the user double-clicks the target folder.

Step 408: The MTP responder acquires the corresponding file handle according to the second access request and feeds it back to the MTP initiator.

Step 409, the MTP initiator displays the corresponding file according to the received file handle.

It can be seen from the above that the embodiment of the present invention can display the folders and files in the preset virtual directory structure by adding the drive letter displayed on the MTP initiator, thereby providing a more friendly display and allowing users to quickly Find files and improve file access efficiency without affecting the original storage directory structure.

FIG. 5 is a structural block diagram of a file display device provided by an embodiment of the present invention. The device can be implemented by software and/or hardware, and is generally integrated in a mobile terminal, and can display files by executing a file display method. As shown in Figure 5, the device includes:

A message receiving module 501, configured to receive the first message sent by the media transfer protocol MTP initiator;

The access interface feedback module 502 is configured to feed back the access interface of the preset virtual directory structure of the MTP responder to the MTP initiator according to the first message, wherein the preset virtual directory structure includes folders of preset categories ;

Folder information feedback module 503, configured to feed back folders in the preset virtual directory structure to the MTP initiator when receiving an access request for the preset virtual directory structure sent by the MTP initiator information, so that the MTP initiator displays the corresponding folder;

The file handle feedback module 504 is configured to acquire the file handle of the file corresponding to the target folder when receiving the access request from the MTP initiator for the displayed target folder, and feed back the acquired file handle to the MTP initiator, so that the MTP initiator displays the corresponding file.

The file display device provided by the embodiment of the present invention can provide the user with a quick access interface of folders with preset categories, which facilitates the user to quickly access the files of the category they are interested in, and improves the efficiency of file access and display.

Optionally, the access interface feedback module is further configured to feed back the access interface of the storage directory structure of the MTP responder to the MTP initiator according to the first message after receiving the first message sent by the MTP initiator.

Optionally, the first message is a drive letter acquisition command;

The access interface feedback module is specifically configured to: feed back the first drive letter of the preset virtual directory structure of the MTP responder to the MTP initiator according to the drive letter acquisition command; The terminal feeds back the second drive letter of the storage directory structure of the MTP response terminal, where the second drive letter is different from the first drive letter.

Optionally, the file handle feedback module is used for:

When receiving the access request from the MTP initiator for the displayed first folder, obtain the file type corresponding to the first folder; search for the file type corresponding to the file type in the storage directory structure of the MTP response end matching file, and feed back the file handle corresponding to the found file to the MTP initiator, so that the MTP initiator displays the corresponding file; or,

When receiving the MTP initiator's access request for the displayed second folder, obtain the storage path corresponding to the second folder in the storage directory structure of the MTP response end; obtain the storage path containing the file handle of the file, and feed back the obtained file handle to the MTP initiator, so that the MTP initiator displays the corresponding file; or,

When receiving the access request from the MTP initiator for the displayed third folder, obtain a preset range of file attributes corresponding to the third folder, where the file attributes include modification time, access time or file size ; Search for files matching the preset scope in the storage directory structure of the MTP responder, and feed back the file handle corresponding to the found file to the MTP initiator, so that the MTP initiator displays corresponding files.

Optionally, the device also includes:

The structure modification module is used to modify the preset virtual directory structure according to the user's setting operation before receiving the first message sent by the MTP initiator, and the setting operation includes adding, reducing or modifying the preset virtual directory structure. Folder containing preset categories.

An embodiment of the present invention also provides a storage medium containing computer-executable instructions, the computer-executable instructions are used to execute a file display method when executed by a computer processor, and the method includes:

receiving the first message sent by the media transfer protocol MTP initiator;

Feedback an access interface of a preset virtual directory structure of the MTP responder to the MTP initiator according to the first message, wherein the preset virtual directory structure includes folders of preset categories;

When receiving the access request for the preset virtual directory structure sent by the MTP initiator, feed back the folder information in the preset virtual directory structure to the MTP initiator, so that the MTP initiator Display the corresponding folder;

When receiving the MTP initiator's access request for the displayed target folder, obtain the file handle of the file corresponding to the target folder, and feed back the acquired file handle to the MTP initiator to Make the MTP initiator display the corresponding file.

storage medium - any of various types of memory devices or storage devices. The term "storage medium" is intended to include: installation media such as CD-ROMs, floppy disks, or tape drives; computer system memory or random access memory such as DRAM, DDR RAM, SRAM, EDO RAM, Rambus RAM, etc. ; non-volatile memory, such as flash memory, magnetic media (eg hard disk or optical storage); registers or other similar types of memory elements, etc. The storage medium may also include other types of memory or combinations thereof. Also, the storage medium may be located in a first computer system in which the program is executed, or may be located in a different second computer system connected to the first computer system through a network such as the Internet. The second computer system may provide program instructions to the first computer for execution. The term "storage medium" may include two or more storage media that may reside in different locations, such as in different computer systems connected by a network. The storage medium may store program instructions (eg embodied as computer programs) executable by one or more processors.

Of course, a storage medium containing computer-executable instructions provided by an embodiment of the present invention, the computer-executable instructions are not limited to the operation of the above-mentioned file display method, and can also execute the file display method provided by any embodiment of the present invention Related operations in .

An embodiment of the present invention provides a mobile terminal, in which the mobile terminal information acquisition device provided by the embodiment of the present invention can be integrated. FIG. 6 is a schematic structural diagram of a mobile terminal provided by an embodiment of the present invention. As shown in FIG. 6, the mobile terminal may include: a housing (not shown in the figure), a memory 601, a central processing unit (Central Processing Unit, CPU) 602 (also known as a processor, hereinafter referred to as CPU), a circuit board (shown in FIG. not shown in) and power supply circuit (not shown in the figure). The circuit board is placed inside the space surrounded by the housing; the CPU 602 and the memory 601 are arranged on the circuit board; the power supply circuit is used to supply power to each circuit or device of the mobile terminal The memory 601 is used to store executable program codes; the CPU 602 executes a computer program corresponding to the executable program codes by reading the executable program codes stored in the memory 601, to achieve the following steps:

receiving the first message sent by the media transfer protocol MTP initiator;

Feedback an access interface of a preset virtual directory structure of the MTP responder to the MTP initiator according to the first message, wherein the preset virtual directory structure includes folders of preset categories;

When receiving the access request for the preset virtual directory structure sent by the MTP initiator, feed back the folder information in the preset virtual directory structure to the MTP initiator, so that the MTP initiator Display the corresponding folder;

When receiving the MTP initiator's access request for the displayed target folder, obtain the file handle of the file corresponding to the target folder, and feed back the acquired file handle to the MTP initiator to Make the MTP initiator display the corresponding file.

The mobile terminal also includes: peripheral interface 603, RF (Radio Frequency, radio frequency) circuit 605, audio circuit 606, speaker 611, power management chip 608, input/output (I/O) subsystem 609, touch screen 612, other Input/control devices 610 and external ports 604 , these components communicate via one or more communication buses or signal lines 607 .

It should be understood that the illustrated mobile terminal 600 is only an example of a mobile terminal, and the mobile terminal 600 may have more or fewer components than those shown in the figure, and two or more components may be combined, Or can have a different component configuration. The various components shown in the figures may be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and/or application specific integrated circuits.

The mobile terminal used for touch operation processing provided by this embodiment will be described in detail below, and the mobile terminal is a mobile phone as an example.

Memory 601, the memory 601 can be accessed by the CPU 602, the peripheral interface 603, etc., the memory 601 can include a high-speed random access memory, and can also include a non-volatile memory, such as one or more disk storage devices, flash memory devices , or other volatile solid-state storage devices.

Peripheral interface 603 , which can connect the input and output peripherals of the device to CPU 602 and memory 601 .

The I/O subsystem 609 , the I/O subsystem 609 can connect input and output peripherals on the device, such as a touch screen 612 and other input/control devices 610 , to the peripheral interface 603 . I/O subsystem 609 may include a display controller 6091 and one or more input controllers 6092 for controlling other input/control devices 610 . Among them, one or more input controllers 6092 receive electrical signals from or send electrical signals to other input/control devices 610, which may include physical buttons (push buttons, rocker buttons, etc.) ), dials, slide switches, joysticks, click wheels. It is worth noting that the input controller 6092 can be connected to any of the following: a keyboard, an infrared port, a USB interface, and a pointing device such as a mouse.

A touch screen 612, the touch screen 612 is an input interface and an output interface between the user's mobile terminal and the user, and displays visual output to the user, and the visual output may include graphics, text, icons, videos, and the like.

The display controller 6091 in the I/O subsystem 609 receives electrical signals from the touch screen 612 or sends electrical signals to the touch screen 612 . The touch screen 612 detects the contact on the touch screen, and the display controller 6091 converts the detected contact into an interaction with the user interface object displayed on the touch screen 612, that is, realizes human-computer interaction, and the user interface object displayed on the touch screen 612 can be a running Icons for games, icons for networking to appropriate networks, etc. It is worth noting that the device may also include an optical mouse, which is a touch-sensitive surface that does not display visual output, or that is an extension of a touch-sensitive surface formed by a touch screen.

The RF circuit 605 is mainly used to establish communication between the mobile phone and the wireless network (that is, the network side), and realize data reception and transmission between the mobile phone and the wireless network. Such as sending and receiving short messages, e-mails, etc. Specifically, the RF circuit 605 receives and sends RF signals, which are also called electromagnetic signals, and the RF circuit 605 converts electrical signals into electromagnetic signals or converts electromagnetic signals into electrical signals, and communicates with communication networks and other devices through the electromagnetic signals to communicate. RF circuitry 605 may include known circuitry for performing these functions including, but not limited to, an antenna system, an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a CODEC ( COder-DECoder, Codec) Chipset, Subscriber Identity Module (Subscriber Identity Module, SIM) and so on.

The audio circuit 606 is mainly used to receive audio data from the peripheral interface 603 , convert the audio data into electrical signals, and send the electrical signals to the speaker 611 .

The speaker 611 is used to restore the voice signal received by the mobile phone from the wireless network through the RF circuit 605 into sound and play the sound to the user.

The power management chip 608 is used for power supply and power management for the hardware connected to the CPU 602 , the I/O subsystem and the peripheral interface.

The mobile terminal provided by the embodiment of the present invention can provide the user with a quick access interface of preset classified folders, which facilitates the user to quickly access the classified files of interest and improves the efficiency of file access and display.

The file display device, computer-readable storage medium, and mobile terminal provided in the above embodiments can execute the file display method provided in any embodiment of the present invention, and have corresponding functional modules and beneficial effects for executing the method. For technical details not exhaustively described in the foregoing embodiments, reference may be made to the file display method provided by any embodiment of the present invention.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.

Claims (10)

1. A file display method, characterized in that, comprising: receiving the first message sent by the media transfer protocol MTP initiator; Feedback an access interface of a preset virtual directory structure of the MTP responder to the MTP initiator according to the first message, wherein the preset virtual directory structure includes folders of preset categories; When receiving the access request for the preset virtual directory structure sent by the MTP initiator, feed back the folder information in the preset virtual directory structure to the MTP initiator, so that the MTP initiator Display the corresponding folder; When receiving the MTP initiator's access request for the displayed target folder, obtain the file handle of the file corresponding to the target folder, and feed back the acquired file handle to the MTP initiator to Make the MTP initiator display the corresponding file. 2. The method according to claim 1, characterized in that, after receiving the first message sent by the MTP initiator, further comprising: feeding back the access interface of the storage directory structure of the MTP responder to the MTP initiator according to the first message. 3. The method according to claim 2, wherein the first message is a drive letter acquisition command; The access interface that feeds back the preset virtual directory structure of the MTP responder to the MTP originator according to the first message includes: Feedback the first drive letter of the preset virtual directory structure of the MTP responder to the MTP initiator according to the drive letter acquisition command; Feedback the access interface of the storage directory structure of the MTP responder to the MTP initiator according to the first message, including: Feedback a second drive letter of the storage directory structure of the MTP responder to the MTP initiator according to the drive letter acquisition command, where the second drive letter is different from the first drive letter. 4. The method according to any one of claims 1-3, wherein, when receiving an access request from the MTP initiator for the displayed target folder, obtaining the file corresponding to the target folder file handle, and feed back the obtained file handle to the MTP initiator, so that the MTP initiator displays the corresponding file, including: When receiving the access request from the MTP initiator for the displayed first folder, obtain the file type corresponding to the first folder; search for the file type corresponding to the file type in the storage directory structure of the MTP response end matching file, and feed back the file handle corresponding to the found file to the MTP initiator, so that the MTP initiator displays the corresponding file; or, When receiving the MTP initiator's access request for the displayed second folder, obtain the storage path corresponding to the second folder in the storage directory structure of the MTP response end; obtain the storage path containing the file handle of the file, and feed back the obtained file handle to the MTP initiator, so that the MTP initiator displays the corresponding file; or, When receiving the access request from the MTP initiator for the displayed third folder, obtain a preset range of file attributes corresponding to the third folder, where the file attributes include modification time, access time or file size ; Search for files matching the preset scope in the storage directory structure of the MTP responder, and feed back the file handle corresponding to the found file to the MTP initiator, so that the MTP initiator displays corresponding files. 5. The method according to claim 1, wherein, before receiving the first message sent by the MTP initiator, further comprising: The preset virtual directory structure is changed according to the user's setting operation, and the setting operation includes adding, reducing or modifying folders of preset categories contained in the preset virtual directory structure. 6. A file display device, characterized in that it comprises: A message receiving module, configured to receive the first message sent by the media transfer protocol MTP initiator; An access interface feedback module, configured to feed back the access interface of the preset virtual directory structure of the MTP responder to the MTP initiator according to the first message, wherein the preset virtual directory structure includes folders of preset categories; A folder information feedback module, configured to feed back folder information in the preset virtual directory structure to the MTP initiator when receiving an access request for the preset virtual directory structure sent by the MTP initiator , so that the MTP initiator displays the corresponding folder; The file handle feedback module is used to obtain the file handle of the file corresponding to the target folder when receiving the access request of the MTP initiator for the displayed target folder, and feed back the acquired file handle to The MTP initiator, so that the MTP initiator displays the corresponding file. 7. The device according to claim 6, wherein the access interface feedback module is further configured to feed back the MTP to the MTP initiator according to the first message after receiving the first message sent by the MTP initiator. The access interface of the storage directory structure of the responder. 8. The device according to claim 7, wherein the first message is a drive letter acquisition command; The access interface feedback module is specifically configured to: feed back the first drive letter of the preset virtual directory structure of the MTP responder to the MTP initiator according to the drive letter acquisition command; The terminal feeds back the second drive letter of the storage directory structure of the MTP response terminal, where the second drive letter is different from the first drive letter. 9. A computer-readable storage medium, on which a computer program is stored, wherein, when the program is executed by a processor, the file display method according to any one of claims 1-5 is implemented. 10. A mobile terminal, characterized in that it comprises a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the computer program according to claim 1 is implemented when the processor executes the computer program. -5 Any of the described file display methods.