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The Android program function Copies files in the assets folder to the SD card (including subfolders) of the mobile phone and androidassets.
Recently, the function is to copy all files (including sub-files) in the asset folder to the specified directory. The method used is nothing more than AssetManager. However, the problem here is that both subfolders and subfol
Recently, when working on the andoird project, we often encounter different machine models on the client side, resulting inProgramThere is a bug problem, and we cannot locate the exact location of this bug (because there is no log file ).
So I found the relevant information about writing program logs to the SD card, just like the Web log4j, to generate a log file to the
Although the permission to read and write the SD card is stated in the manifest file,
However, you still do not have permission when running the program. This is because the SD card itself does not have permission, so you need to modify the permissions of the SD
. Android_secure is the product of the official app2sd. After deletion, the software installed on the SD card cannot be used. There are a lot of. ASEC files, which are software installed on the SD card, but they are usually installed in the SD card.ProgramThe. android_secure
1, because the simulator must be installed under the system disk, so the default SD card file is also stored in the C disk, then the expansion of capacity will inevitably lead to the reduction of C disk space, which is usually intolerable to users, so you also need to transfer it to the hard disk of other more free partitions, The following functions can be used to facilitate the implementation of the Force
Android obtains all pictures, video thumbnails, and album covers on the SD card.Query Images
First, query the inherent Android database. The image Uri isImages.Media.EXTERNAL_CONTENT_URI.The following is a specific instance query,FileInfoIs a custom data model.
Public ArrayList
QueryAllImage (final Context context) {if (context = null) {// judge the validi
The premise is that the phone needs to be rooted.Then use a text editor to open the "platform.xml" file in the/system/etc/permissions directory (Mount read/write), Restart your phone and you will find that you can create, modify, and delete data to an external memory card (SD card).
The following is a tool class. It uses recursion to scan the APK file on the SD card to determine whether the application has been installed on the mobile phone. If so, it determines whether the application can be upgraded. DetailsCodeAs follows:
/*** Obtain the APK File Information class on the mobile phone, mainly to determine whether or not to install it on the mobile phone, the installed version
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