CN104484484B - Clear up the method and device of cache file - Google Patents

Abstract

The present invention provides a method for cleaning cached files, comprising the following steps: obtaining cached information and original file information corresponding to the cached information; matching the cached information with the original file information; when the file information in the cached information matches the original file information When the corresponding file information is not available, clean up the cache file corresponding to the file information. The invention also provides a device for clearing cache files. Through the above method, the present invention can identify and clear invalid cache files in the cache and improve user experience.

Description

Method and device for clearing cache files

technical field

The present invention relates to the field of computers, in particular, the present invention relates to a method and device for clearing cache files.

Background technique

In the development of computer technology, caching technology is indispensable to improve the running efficiency and fluency of files such as applications, videos and pictures. The CPU can directly read the files in the cache, so as to solve the contradiction between the CPU operation speed and the memory read and write speed, and improve the file operation efficiency.

At present, the cleaning of cache files is usually to scan out all cache files for cleaning. The disadvantages of this cleaning method are as follows: if the user directly cleans up some files such as applications or pictures, the speed will slow down and the corresponding cache files will be generated again, resulting in redundant operations; if the user selects one by one Cleaning, because there are usually many cache files scanned, it is time-consuming to select one by one, especially with the diversification of smart terminal functions, a large number of cache files will further increase the selection time.

In addition, the existing cache technology does not have an update mechanism itself, and cannot identify some invalid cache files.

How to identify and clear the invalid cache files in the cache and keep the cache files required by the smart terminal is one of the problems to be solved urgently in file cleaning.

Contents of the invention

The purpose of the present invention is to at least solve one of the above-mentioned technical defects, especially to be able to identify and clear invalid cache files in the cache, so as to improve user experience.

The present invention provides a method for cleaning cached files, comprising the following steps: obtaining cached information and original file information corresponding to the cached information; matching the cached information with the original file information; when the file information in the cached information matches the original file information When the corresponding file information is not available, clean up the cache file corresponding to the file information.

Wherein, when the file information in the cache information does not match the corresponding file information in the original file information, cleaning the cache file corresponding to the file information includes: when the file information in the cache information does not match the corresponding file information in the original file information When the corresponding file information is found, the cache file corresponding to the file information is marked as invalid; after the cache information matches the original file information, the cache file marked as invalid is cleaned up.

Wherein, the cache information is the virtual machine cache package name, and the original file information is the installed file package name.

Wherein, the cache information is thumbnail image information, and the original file information is original image information in a mapping relationship with the thumbnail image information.

Wherein, when the file information in the cache information does not match the corresponding file information in the original file information, the cache file corresponding to the file information is marked as invalid, including: when the file package name in the virtual machine cache package name is already When the corresponding file package name cannot be matched in the installation file package name, the cache file corresponding to the file package name is marked as invalid.

Wherein, when the file information in the cache information does not match the corresponding file information in the original file information, mark the cache file corresponding to the file information as invalid, including: when the file information in the thumbnail information matches the original image information When the corresponding file information is not found, mark the cache file corresponding to the file information as invalid.

The present invention provides a device for cleaning cached files, comprising: an acquisition module for acquiring cached information and original file information corresponding to the cached information; a matching module for matching the cached information with original file information; a cleaning module for When the file information in the cache information does not match the corresponding file information in the original file information, the cache file corresponding to the file information is cleared.

Wherein, the cleaning module includes: an identification unit, used to identify the cached file corresponding to the file information as invalid when the file information in the cache information does not match the corresponding file information in the original file information; After the cache information is matched with the original file information, the cache files marked as invalid are cleaned up.

Wherein, the cache information is the virtual machine cache package name, and the original file information is the installed file package name.

Wherein, the cache information is thumbnail image information, and the original file information is original image information in a mapping relationship with the thumbnail image information.

Wherein, the identification unit is specifically used for: when the file package name in the virtual machine cache package name does not match the corresponding file package name in the installed file package name, mark the cache file corresponding to the file package name as invalid.

Wherein, the identification unit is specifically configured to: when the file information in the thumbnail information does not match the corresponding file information in the original image information, mark the cache file corresponding to the file information as invalid.

In the present invention, the method for clearing the cached files by the smart terminal is as follows: first obtain the cached information and the original file information corresponding to the cached information; match the cached information with the original file information, when the file information in the cached information matches the original file information When the corresponding file information is not found, the cache file corresponding to this file information is an invalid cache file; after the matching is completed, the invalid cache file will be cleaned up.

The above solution proposed by the present invention can identify and clear invalid cache files in the cache, release cache space in a targeted manner, and improve user experience.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and will become apparent from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic flow diagram of an embodiment of a method for clearing cached files in the present invention;

FIG. 2 is a schematic flow diagram of another embodiment of the method for clearing cache files in the present invention;

FIG. 3 is a schematic structural diagram of an embodiment of an apparatus for clearing cached files according to the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Additionally, "connected" or "coupled" as used herein may include wireless connection or wireless coupling. The expression "and/or" used herein includes all or any elements and all combinations of one or more associated listed items.

Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have meanings consistent with their meaning in the context of the prior art, and unless specifically defined as herein, are not intended to be idealized or overly Formal meaning to explain.

Those skilled in the art can understand that the "terminal" and "terminal equipment" used here not only include wireless signal receiver equipment, which only has wireless signal receiver equipment without transmission capabilities, but also include receiving and transmitting hardware. A device having receiving and transmitting hardware capable of performing bi-directional communication over a bi-directional communication link. Such equipment may include: cellular or other communication equipment, which has a single-line display or a multi-line display or a cellular or other communication equipment without a multi-line display; PCS (Personal Communications Service, personal communication system), which can combine voice, data Processing, facsimile and/or data communication capabilities; PDA (Personal Digital Assistant _, Personal Digital Assistant), which may include radio frequency receiver, pager, Internet/Intranet access, web browser, notepad, calendar and/or GPS (Global Positioning System (Global Positioning System) receiver; a conventional laptop and/or palmtop computer or other device having and/or including a radio frequency receiver. As used herein, a "terminal", "terminal device" may be portable, transportable, installed in a vehicle (air, sea, and/or land), or adapted and/or configured to operate locally, and/or In distributed form, the operation operates at any other location on Earth and/or in space. The "terminal" and "terminal equipment" used here can also be communication terminals, Internet terminals, music/video playback terminals, such as PDAs, MIDs (Mobile Internet Devices, mobile Internet devices) and/or with music/video playback terminals. Functional mobile phones, smart TVs, set-top boxes and other devices.

Those skilled in the art can understand that the remote network device used here includes, but is not limited to, a computer, a network host, a single network server, a set of multiple network servers, or a cloud formed by multiple servers. Here, the cloud is composed of a large number of computers or network servers based on cloud computing (Cloud Computing), wherein cloud computing is a kind of distributed computing, a super virtual computer composed of a group of loosely coupled computer sets. In the embodiment of the present invention, the communication between the remote network equipment, the terminal equipment and the WNS server can be realized through any communication method, including but not limited to, mobile communication based on 3GPP, LTE, WIMAX, based on TCP/IP, UDP protocol Computer network communication and short-distance wireless transmission methods based on Bluetooth and infrared transmission standards.

Those skilled in the art should understand that the concepts of "application", "application program", "application software" and similar expressions referred to in the present invention are the same concepts well known to those skilled in the art, and refer to a series of computer instructions and related Computer software that is organically constructed from data resources and suitable for electronic operation. Unless otherwise specified, this naming itself is not limited by the type of programming language, level, or the operating system or platform on which it runs. Naturally, such concepts are also not limited by any form of terminal.

The method and device of the present invention can be implemented in different operating systems. To simplify the description, the following description will mainly take the Android system as an example. Those skilled in the art should not construe it as a limitation of the present invention.

Please refer to FIG. 1. FIG. 1 is a schematic flow diagram of an embodiment of a method for clearing cache files according to the present invention. As shown in FIG. 1, it includes the following steps:

S11. Acquire cached information and original file information corresponding to the cached information.

The method of this embodiment is suitable for clearing cached files in smart terminals, especially in mobile terminals, such as mobile phones and tablet computers. The smart terminal first obtains the cache information and the original file information. The cache file information and the original file information are described below by taking a specific type of file as an example.

A. Apps

In the Android system, during the running or installation process of the application program, a corresponding cache file will be generated, so that the application program does not need to be parsed during subsequent operation, thereby improving the running speed of the application program. The installation of applications involves the following directories: system/app, used to install system applications; data/app, used to install user applications; data/data, used to store application data; Data/dalvik-cache, used to Install the .dex file of the application. The specific installation process of the application is: copy the application installation package to the data/app directory, decompress and scan the installation package, save the .dex file to the dalvik-cache directory, and create the corresponding application data in the data/data directory, This completes the installation of the application. Specifically, the uninstallation process of the application program is to delete the data in each directory during installation.

The application scenario of the method in this embodiment is that when the application program is uninstalled abnormally, some of its corresponding cache files still exist, and these cache files always occupy the cache space because they cannot be recognized and cleaned up. If there are too many such cache files, the Affects the performance of smart terminals and reduces user experience.

Therefore, for the identification and cleaning of invalid application cache files, the cache information is the cache package name of the virtual machine, that is, the package name of the virtual machine cache file, and the original file information is the package name of the installed file, usually the name of each file in the installed file list. Package names.

Taking a mobile phone as an example, the directory "data/system/packages.xml" in the data area of the mobile phone contains the basic information of all installed applications on the mobile phone.

B. Pictures

The cache of the picture is a thumbnail, and the quick browsing of the picture can be realized through the thumbnail.

The application scenario of the method in this embodiment is that when the original picture does not exist, if the corresponding thumbnail is not cleaned up in time, it will occupy cache space and affect the performance of the smart terminal.

Therefore, for the identification and cleaning of invalid image cache files, the cache information is the thumbnail image information, specifically the information in the thumbnails table in the database, and the original file information is the original image information in a mapping relationship with the thumbnail image information, that is, the image table in the database ( image table) information.

In the process of obtaining cache information, in order to speed up the scan, for folder cache, if the timestamp of the folder has not changed, it means that the folder has not been modified, that is, the number and size of files in it have not changed, and can be skipped The scan directly obtains the folder cache information recorded during the previous scan.

S12. Match the cached information with the original file information.

Combined with the analysis of the above two scenarios A and B, the cache information and the original file information can be understood as two objects that have a corresponding relationship. In theory, the cache information and the original file information should maintain a corresponding relationship with each other. If a piece of cache information It cannot correspond to all the original file information. In this case, the cached information can be regarded as the object to be cleaned up.

For the identification and cleaning of invalid application cache files, the virtual machine cache package name is matched with the installed file package name. When the file package name in the virtual machine cache package name does not match the corresponding file package name in the installed file package name When the file package name is specified, the cache file corresponding to the file package name is an invalid cache file.

Specifically, match the package name in the .dex file with the package name in the installed file list. When the file package name in the .dex file cannot find its corresponding file package name in the installed file list, It means that the file corresponding to this file package name is not installed, therefore, the cache file corresponding to this file package name is an invalid cache file.

For the identification and cleaning of invalid image cache files, the thumbnail information is matched with the original image information. When the file information in the thumbnail information does not match the corresponding file information in the original image information, the cache file corresponding to this file information Invalid cache file.

Specifically, match the information in the thumbnails table with the information in the image table. When the ID in the thumbnails table cannot find its corresponding ID in the image table, it means that the image file corresponding to this ID has been deleted. Therefore , the thumbnail corresponding to this ID is an invalid thumbnail.

S13, when the file information in the cache information does not match the corresponding file information in the original file information, clear the cache file corresponding to the file information.

After the invalid cache file is identified, the invalid cache file is cleaned.

The specific process of cleaning is deletion, which can be deleted by single thread or multi-thread. Taking an application program as an example, if the invalid cache file is the cache of a system application, root permission is required to delete it; if the invalid cache file is a user application cache, it can be deleted directly.

For the cleaning of invalid cache files of system applications, Root permission is required, and Root permission includes permanent Root or temporary Root. In the case of permanent root authority, once root authorization is granted, there is no need to upgrade the root authority in the future; in the case of temporary root authority, the life cycle of the authority is only a process from booting to shutting down the operating system, and rooting is still required for the next boot. .

No matter which Root method is adopted, the basic principle of privilege escalation is to implant su to the system to receive permission requests, and then combine with the SuperUser.apk application to realize human-computer interaction. The process of root privilege escalation operation is as follows: put the su file in /system/bin/, put Superuser.apk under system/app, the former is used to monitor the user’s permission request and communicate with the latter, and the latter is mainly Human-computer interaction is realized on the basis of communicating with the former, thus allowing users to make relevant instructions. In theory, if su can pass all permission requests by default, then SuperUser.apk can be discarded. In addition, it is necessary to set /system/bin/su to allow any user to run, so that it has the permission of set uid and set gid. Specifically, it can be realized by running the command on the android machine: adb shell chmod 4755 /system/bin/su. For the root scheme, it should be understood as including: code files related to cracking and their configuration parameters, files named or implemented with "su" and "SuperUser.apk".

During the deletion process, it is also necessary to determine whether the invalid cache file is bundled with other cache files. If so, it cannot be deleted, so as not to affect the operation of other applications. At this time, the user can be asked, and the user can choose whether to delete, such as "the invalid cache file is bundled with the cache of a certain application, whether to uninstall the application, and then delete the invalid cache file", when the user uninstalls the application, The invalid cache file is deleted, and when the user does not perform an uninstall operation, the invalid cache file is not deleted.

As mentioned above, the method for clearing cache files in this embodiment can identify and clear invalid cache files in the cache, avoiding the need to clear all caches with one click or selection when clearing invalid caches, and improve user experience.

Please refer to FIG. 2. FIG. 2 is a schematic flow diagram of another embodiment of the method for clearing cache files according to the present invention. As shown in FIG. 2, it includes the following steps:

S21. Acquire cached information and original file information corresponding to the cached information.

S22. Match the cached information with the original file information.

S23. When the file information in the cache information does not match the corresponding file information in the original file information, mark the cache file corresponding to the file information as invalid.

S24, after the matching between the cache information and the original file information is completed, clear the cache files marked as invalid.

Wherein, steps S21 and S22 are the same as steps S11 and S12 in the embodiment shown in FIG. 1 , and will not be repeated here.

In this embodiment, the identified invalid cache files are identified, and after the matching is completed, all cache files identified as invalid are cleaned up.

It should be pointed out that the smart terminal can trigger the start step S21 according to the user instruction or timing, and after the matching is completed, the smart terminal can clear the cache files marked as invalid according to the user instruction or automatically.

After the matching is completed, display all identified invalid cache files so that users can view them. When the user triggers cleaning, all invalid cache files are displayed before the trigger; when the smart terminal automatically cleans, all invalid cache files can be displayed after cleaning to tell the user what has been cleaned.

When the invalid cache file of the application includes multiple paths, they can be merged according to the package name, that is, a total package name, including each path of the invalid cache file under the package name. This method can succinctly display the invalid cache file of the logo and improve user experience.

In practical applications, cache files can be cleaned up based on the floating window. The cleaning process is specifically as follows: the floating window is triggered by the user, and the floating window interface is used to scan to obtain the cache information and the original file information corresponding to the cache information; according to the method of this embodiment, scan out the cache files with invalid identifiers; Cache files are cleaned up. This method is suitable for clearing cache files in mobile phones, and the cache files mainly refer to non-memory cache. The following describes in detail the cleaning of invalid cache files by using the floating window.

A. Call the second floating window according to the calling instruction generated by the operation on the first floating window.

The first floating window is small and can be displayed all the time. It mainly displays the current memory usage rate of the smart terminal for the user. When it detects that the smart terminal has files that need to be cleaned up, it also displays a cleaning prompt. The first floating window includes a ball representing the memory usage rate and a balloon dialog box representing the cleaning prompt; for the memory usage rate, it is refreshed every 10s; when the memory usage rate is below 80%, it will display blue; when the memory usage rate is 80% % and above, it will display red; when the balloon dialog box is triggered, the balloon dialog box can be expanded to display the corresponding prompt text.

The second floating window is larger, including memory acceleration interface, cleaning interface and common interface. The functions of each interface are as follows:

The memory acceleration interface includes an initial sub-interface and a completion sub-interface. The initial sub-interface is used to display the current memory usage rate, and there is a click acceleration function control on it, which is used to call the completion sub-interface. The specific process of memory acceleration is: before acceleration, the initial sub-interface displays the current memory usage rate. When the memory usage rate is less than 80%, the initial sub-interface displays blue. When the memory usage rate is 80% or above, the initial sub-interface displays Red; after clicking the acceleration function control, the memory usage rate drops from the initial value to 0% and then rises to the accelerated memory usage rate, the interface color also changes accordingly, and finally the sub-interface is generated. Among them, the completed sub-interface also displays how much the speed has been increased. The calculation method of the speed-up is: the current memory usage before acceleration minus the current memory usage after acceleration. If the difference between the two is less than 1%, the completed sub-interface will display "Achieved the best".

The cleaning interface includes a scanning sub-interface, a stop-scanning sub-interface, a cleaning sub-interface and a cleaned sub-interface. The scanning sub-interface, the stop scanning sub-interface and the cleaning sub-interface are respectively provided with a scanning function control, a stop scanning function control, and a one-key cleaning function control. The scanning function control is used to call the stop scanning sub interface, and the stop scanning function control is used to call the cleaning function. Sub-interface, one-click cleaning function control is used to call the cleaned sub-interface. The specific process of cleaning is: before cleaning, the scan sub-interface displays the current storage value; after clicking the scan function control, the stop scanning sub-interface displays the scanned garbage value; after clicking the stop scan function control, if the garbage has been scanned, go to the cleaning In the sub-interface, if the garbage is not scanned, it will go to the scanning sub-interface; the cleaning sub-interface displays the scanned garbage, and there is also a detail control on this interface to query the details of the garbage; after clicking the one-key cleaning function control, the The cleaning sub-interface displays the cleaned garbage. Among them, if the scanned garbage is less than or equal to 50M, the stop scanning sub-interface and the cleaning sub-interface are blue; if the scanned garbage is larger than 50M, the stop scanning sub-interface and the cleaning sub-interface are red. Wherein, after clicking the detail control, at least one of the following types of data is displayed: cache data, installation package data, uninstall residual data, etc., and the cache data also includes invalid cache data, that is, invalid cache files.

Commonly used interfaces include controls for self-starting management functions, controls for uninstalling pre-installed functions, controls for privacy cleaning functions, controls for game/video acceleration functions, controls for software uninstallation functions, and controls for timing cleaning functions. The above function controls are the entrances of corresponding functions.

According to the content displayed in the first floating window, the display status of the second floating window called includes the following two situations:

a. When the first floating window displays memory usage, the second floating window displays a conventional interface, and the conventional interface is specifically a memory acceleration interface.

b. When the first floating window displays memory usage and cleaning prompts, the second floating window displays a regular interface, and a cleaning prompt area is added to the regular interface. Wherein, the cleaning prompt area is a control area. Wherein, in the cleaning reminder area, there is a reminder text corresponding to the cleaning reminder of the first floating window.

B. Receive the cleaning instruction generated by the operation of the second floating window.

Since the cleaning is performed based on the second floating window, it is necessary to operate the second floating window, specifically, to operate the function control or the cleaning prompt area of the second floating window.

C. Clean up the files according to the cleanup instructions.

a. Clean up the files according to the cleanup instructions generated by the operation of the functional controls.

Take cleaning invalid cache files as an example, through the cleaning interface, scan out invalid cache files, and use the one-key cleaning function control to clean invalid cache files.

In this cleaning method, all types of invalid caches are displayed in a centralized manner, and one-click cleaning reduces the difficulty of user operations and improves user experience.

b. Call the interface of the second floating window or the system interface according to the cleaning instruction generated by the operation of cleaning the prompt area to clean up the files.

Taking cleaning invalid cache files as an example, when the system detects that there are invalid cache files on the smart terminal, it will prompt through the balloon dialog box of the first floating window, and after calling the second floating window, perform operations on the cleaning prompt area of the second floating window , and then obtain the identified invalid cache file, and clean up the invalid cache file.

After the cleaning is completed, the second floating window will be automatically closed within a predetermined time, or may be closed by the user.

The cleaning method b will be described in detail below through some specific examples.

After unlocking the screen of the mobile phone, the memory space is detected. If the memory space is less than 20%, the first floating window will prompt. This detection can be performed at predetermined intervals. Click the first floating window to call the second floating window. The cleaning prompt area of the second floating window displays the text "The memory space is less than 20%, click here to free up space". After clicking the cleaning prompt area, you will enter the system drive letter analysis interface, and then proceed further clean up.

After unlocking the screen of the mobile phone, the storage space is detected. If the storage space is less than 20%, the first floating window will prompt. This detection can be performed at predetermined intervals. Click on the first floating window to call the second floating window, and the cleaning prompt area of the second floating window displays the text "storage space is less than 20%, click here to free up space", after clicking the cleaning prompt area, enter the system drive letter analysis interface, and then proceed further clean up.

After unlocking the screen of the mobile phone, check whether there are more than 5 infrequently used software. If so, the first floating window will prompt. This check can be performed at predetermined intervals. Wherein, when the number of infrequently used software detected this time is the same as the number of infrequently used software detected last time, no prompt is given this time. Click the first floating window to call the second floating window. The cleaning prompt area of the second floating window displays the text "5 uncommonly used software can be uninstalled. Click here to free up space". After clicking the cleaning prompt area, it will jump to the second floating window. Commonly used interface, the software uninstall function control of the commonly used interface enters the software uninstall system interface for uninstallation.

After unlocking the screen of the mobile phone, check whether there are more than 3 types of software of the same type. If so, the first floating window will prompt. This test can be performed at predetermined intervals. Click on the first floating window to call the second floating window. The cleaning prompt area of the second floating window displays the text "too many similar software, click to free up space", click on the cleaning prompt area, jump to the corresponding system interface or pop-up box, and uninstall .

Please refer to FIG. 3 . FIG. 3 is a schematic structural diagram of an embodiment of an apparatus for clearing cached files according to the present invention. As shown in FIG. 3 , it includes: an acquisition module 31 , a matching module 32 and a cleaning module 33 . Wherein, the cleaning module 33 includes an identification unit 331 and a cleaning unit 332 .

The functions of the above modules are as follows:

Acquisition module 31 is used for obtaining cache information and original file information corresponding to cache information; Matching module 32 is used for matching cache information with original file information; Cleaning module 33 is used for when the file information in the cache information matches in original file information When the corresponding file information is not available, clean up the cache file corresponding to the file information.

Wherein, the identifying unit 331 is used to mark the cached file corresponding to the file information as invalid when the file information in the cached information does not match the corresponding file information in the original file information; the cleaning unit 332 is used to compare the cached information with the original file information After the file information matching is completed, the cached files identified as invalid are cleaned up.

In this embodiment, the cache information acquired by the acquisition module 31 is the virtual machine cache package name and/or thumbnail information, and the acquired original file information is the installed file package name and/or original image information in a mapping relationship with the thumbnail information.

The matching module 32 is used for matching the virtual machine cache package name with the installed file package name and/or matching the thumbnail image information with the original image information.

When the matching module 32 matches an invalid cache file, the identification unit 331 identifies the invalid cache file, and the cleaning unit 332 cleans up all the cache files marked as invalid.

In practical application, when the file is cleaned based on the floating window, the floating window is first triggered by the user, and the acquisition module 31 is started to work by using the floating window. Work.

It should be emphasized that the cleaning method of the invalid cache information of the present invention can also be applied to mobile device operating systems such as windows phone and IOS, so the method of the present invention has universal adaptability.

To sum up, the present invention cleans up invalid cache files in the cache, which is beneficial to targeted cleaning of the cache and improves user experience.

The above descriptions are only part of the embodiments of the present invention. It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principles of the present invention. It should be regarded as the protection scope of the present invention.

Claims (6)

1. A method for clearing cache files, comprising the following steps: If an abnormal uninstallation event of the application occurs, and/or the original picture does not exist, the user triggers the floating window to be called, and uses the floating window interface to scan to obtain the cache information and the original file information corresponding to the cache information; Matching the cached information with the original file information; When the file information in the cache information does not match the corresponding file information in the original file information, mark the cache file corresponding to the file information as invalid; after the cache information matches the original file information, Cleaning up the cache files marked as invalid corresponding to the file information; Wherein, the cache information is the virtual machine cache package name, and the original file information is the installed file package name; The cache information is thumbnail image information, and the original file information is original image information in a mapping relationship with the thumbnail image information. 2. The method for cleaning cache files according to claim 1, wherein when the file information in the cache information does not match the corresponding file information in the original file information, the file information corresponding to the file information Cache files identified as invalid include: When the file package name in the cache package name of the virtual machine does not match the corresponding file package name in the installed file package name, mark the cache file corresponding to the file package name as invalid. 3. The method for clearing cache files according to claim 1, wherein when the file information in the cache information does not match the corresponding file information in the original file information, the file information corresponding to the file information Cache files identified as invalid include: When the file information in the thumbnail image information does not match the corresponding file information in the original image information, mark the cache file corresponding to the file information as invalid. 4. A device for clearing cache files, comprising: The acquisition module is used to trigger and call the floating window through the user when an abnormal uninstallation event of the application occurs, and/or the original picture does not exist, and use the floating window interface to scan to obtain the cache information and the original file information corresponding to the cache information ; A matching module, configured to match the cached information with the original file information; A cleaning module, configured to mark the cache file corresponding to the file information as invalid when the file information in the cache information does not match the corresponding file information in the original file information; After the information matching is completed, clear the cache file marked as invalid corresponding to the file information; Wherein, the cache information is the virtual machine cache package name, and the original file information is the installed file package name; The cache information is thumbnail image information, and the original file information is original image information in a mapping relationship with the thumbnail image information. 5. The device for cleaning cache files according to claim 4, wherein the cleaning module includes an identification unit, and the identification unit is specifically used for: When the file package name in the cache package name of the virtual machine does not match the corresponding file package name in the installed file package name, mark the cache file corresponding to the file package name as invalid. 6. The device for cleaning cache files according to claim 4, wherein the cleaning module includes an identification unit, and the identification unit is specifically used for: When the file information in the thumbnail image information does not match the corresponding file information in the original image information, mark the cache file corresponding to the file information as invalid.