我怎样写与NativeActivity的内部存储文件系统？ [英] How do I write to the internal storage file system with NativeActivity?

问题描述

我过到Android移植一个纯C ++游戏，因为我的目标是安卓3.0+平板电脑，我选择使用NativeActivity的，以避免完全的Java。但是，我不能看到任何功能，可以让我写到设备的内部存储。调用fopen（）函数将失败，因为我不知道在哪个目录，我应该写，内部存储的文件系统是无法访问

I'm porting a pure C++ game over to Android, and since my target is Android 3.0+ tablets, I opted to use NativeActivity in order to avoid Java completely. However, I am not able to see any functionality that lets me write to the device's internal storage. Calls to fopen() will fail as I have no idea which directory I am supposed to write and the internal storage filesystem is not accessible

这code通常不会对Java的把戏，为我的应用程序内部的可写数据目录给我的路径：

This code usually does the trick on Java, giving me the path to the internal writable data directory for my app:

mContext.getFilesDir();

有谁知道对于C替代++？否则，我会打电话给上面的代码段用JNI。

Does anybody know an alternative for C++? Otherwise I'll have to call the snippet above with JNI.

当然，我特地到的 $ NDK /..../包括/安卓/ 的头，但我看不出有任何候选方法我需要什么。

Of course, I have looked into the $NDK/..../include/android/ headers but I see no candidate methods for what I need.

推荐答案

我终于找到了。原来的路径，内部存储目录中被声明为ANativeActivity的一员机器人/ native_activity.h

I finally found it. Turns out the path to the internal storage directory is declared as a member of ANativeActivity in android/native_activity.h:

/**
 * Path to this application's internal data directory.
 */
const char* internalDataPath;

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