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GetFilesDir() from NDK?

开发者 https://www.devze.com 2023-03-11 16:02 出处:网络
Is there a way to get the application\'s directory to save private data to a file for my application directly from the NDK? In other words, I need an equivalent of the Java function mContext.getFilesD

Is there a way to get the application's directory to save private data to a file for my application directly from the NDK? In other words, I need an equivalent of the Java function mContext.getFilesDir().

I have noted that other posts such as this one: Android NDK Write File

mention what is the 'usual' place for this directory to be. But for it to be correct in all versions and all devices, an eq开发者_运维知识库uivalent system call is surely necessary.

I am currently using a NativeActivity and no Java at all.

Thank you for your time.


I have custom helper class for accessing various paths, for the data directory I do this:

  1. Read /proc/self/cmdline or /proc/**MyPID**/cmdline
  2. Append the results from #1 to /data/data/

Example results:

/data/data/com.yourcompany.yourproduct/


If you are using NativeActivity then you have access from native code to an ANativeActivity instance (see <ndk_root>/platforms/android-9/arch-arm/usr/include/android/native_activity.h) which has internalDataPath and externalDataPath members.

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