Timing of data cleaning in files directory
In the Android system, the files directory under the application package is usually used to store the application's private files, which are only accessible by the current application. However, under certain circumstances, the data in the files directory may be cleared, mainly including the following situations:
Application Uninstall: When an application is uninstalled, the system will delete the application and its related data, including files in the files directory.
Application update: When an application is updated to a new version, the new version of the application usually overwrites the files in the files directory of the old version. Therefore, files in the old version's files directory may be purged if they are no longer needed after the update.
Cache expiration: Some applications may store cache files in the files directory and set the cache validity period. When the cache expires, the application may delete the corresponding cache file.
User manual cleaning: Users can manually clean the application's data, including files in the files directory, through system settings or third-party cleaning tools.
Exceptional crash or error: In some cases, the application may crash abnormally or errors may occur, causing some files in the files directory to be lost or corrupted. Clear.
It is important to note that because the files directory is private to each application, other applications cannot access files in this directory. The files in this directory may be cleared only under specific circumstances, such as application uninstallation, updates, cache expiration, or user manual cleaning.
Time to clean up data in the cache directory
System automatic cleanup: The Android system will automatically clean up the application's cached data when necessary to free up storage space. This usually occurs when the system detects insufficient storage space.
App updates: When an app is updated to a new version, the system may clear the app's cached data so that the app can be reloaded in the new version data.
Cache expiration: Some applications will set a cache expiration date. When the cache expires, the application clears the expired cache data.
User manual cleanup: Users can manually clear the cached data of applications through system settings or third-party tools.
Application crashes unexpectedly: In some cases, the application may crash unexpectedly, causing cache data to be lost or cleared.
It should be noted that although the data in the cache directory may be cleared, applications usually take some measures to ensure that important data is protected, such as storing the data in a private directory or using encrypted storage.