如何使用Native Activity？ 它可以与传统活动结合吗？
我有两个库（.so），我在Java代码中加载。
但是有一些特定的操作需要Java（Activity）< - > C ++（.so文件）调用。
我可以使用Native Activity来实现这些功能的一部分吗？ 本土活动是传统活动的补充或我必须选择哪种类型的活动？
[编辑]
有一组事件可以通过本地活动以本机代码处理
机器人-NDK /源/机器人/ native_app_glue / android_native_app_glue.h
enum {
/**
* Command from main thread: the AInputQueue has changed. Upon processing
* this command, android_app->inputQueue will be updated to the new queue
* (or NULL).
*/
APP_CMD_INPUT_CHANGED,
/**
* Command from main thread: a new ANativeWindow is ready for use. Upon
* receiving this command, android_app->window will contain the new window
* surface.
*/
APP_CMD_INIT_WINDOW,
/**
* Command from main thread: the existing ANativeWindow needs to be
* terminated. Upon receiving this command, android_app->window still
* contains the existing window; after calling android_app_exec_cmd
* it will be set to NULL.
*/
APP_CMD_TERM_WINDOW,
/**
* Command from main thread: the current ANativeWindow has been resized.
* Please redraw with its new size.
*/
APP_CMD_WINDOW_RESIZED,
/**
* Command from main thread: the system needs that the current ANativeWindow
* be redrawn. You should redraw the window before handing this to
* android_app_exec_cmd() in order to avoid transient drawing glitches.
*/
APP_CMD_WINDOW_REDRAW_NEEDED,
/**
* Command from main thread: the content area of the window has changed,
* such as from the soft input window being shown or hidden. You can
* find the new content rect in android_app::contentRect.
*/
APP_CMD_CONTENT_RECT_CHANGED,
/**
* Command from main thread: the app's activity window has gained
* input focus.
*/
APP_CMD_GAINED_FOCUS,
/**
* Command from main thread: the app's activity window has lost
* input focus.
*/
APP_CMD_LOST_FOCUS,
/**
* Command from main thread: the current device configuration has changed.
*/
APP_CMD_CONFIG_CHANGED,
/**
* Command from main thread: the system is running low on memory.
* Try to reduce your memory use.
*/
APP_CMD_LOW_MEMORY,
/**
* Command from main thread: the app's activity has been started.
*/
APP_CMD_START,
/**
* Command from main thread: the app's activity has been resumed.
*/
APP_CMD_RESUME,
/**
* Command from main thread: the app should generate a new saved state
* for itself, to restore from later if needed. If you have saved state,
* allocate it with malloc and place it in android_app.savedState with
* the size in android_app.savedStateSize. The will be freed for you
* later.
*/
APP_CMD_SAVE_STATE,
/**
* Command from main thread: the app's activity has been paused.
*/
APP_CMD_PAUSE,
/**
* Command from main thread: the app's activity has been stopped.
*/
APP_CMD_STOP,
/**
* Command from main thread: the app's activity is being destroyed,
* and waiting for the app thread to clean up and exit before proceeding.
*/
APP_CMD_DESTROY,
};
因为我知道我的代码的一部分（应该在特定事件后调用）是用C ++编写的，我认为通过本地Activity在C ++中处理会更好。 不过，我也有代码必须在Java中的句柄事件后调用。
问题是...我可以有我的活动的本地版本（本机界面），这将有助于我的一些事件和传统的Java界面在同一时间同一活动？
我会回答你不能有一个活动的两个版本的代码。
你如何在你的清单中指定？
在Google提供的样本中，主体的评论非常明确：
它在自己的线程中运行，具有自己的事件循环以接收输入事件并执行其他操作
本地活动将处理循环中的所有事件while(1) {...} 。 混合Java和本地事件是不可能的。
恕我直言，使用本地活动的主要原因是用户界面。 如果您已经在C ++中拥有全功能的用户界面，那么您可以更轻松地使用本地活动，并且更便于使用。 您仍然可以自定义您的应用程序以添加其他Java活动（不要忘记在清单中放置android:hasCode="TRUE" ！）。 在另一种情况下，使用java活动可以让您完全使用google用户界面，并在需要时调用您的本地库。
关于你的表现问题，当你说：
我认为通过本地Activity在C ++中处理会更好
看看这个：http://developer.android.com/guide/practices/design/performance.html#native_methods
希望这可以帮助！
链接地址: http://www.djcxy.com/p/5761.html上一篇: How to use Native Activity? Can it be combined with traditional activity?