native-activity

i'm developing a computer vision application for Android. That work involves getting camera frames as fast as possible, so I'm trying to build a android application directly in c++ using "android_native_app_glue" and "libnative_camera" to get camera frames. It seems to be incompatible. I tested out 2 options. I tried to use OpenCV on the android NDK sample "NativeActivity", just make the few necessary changes (convert sample to c++, modify android.mk y application.mk and including using namespaces and includes) It gives the following error: sharedLibrary : libnative-activity.so C:/Development

I have some problems with my Native Activity application. It works fine on 99% of devices. But sometimes users get the following error: java.lang.RuntimeException: Unable to start activity ComponentInfo{nightradio.sunvox/nightradio.sunvox.MyNativeActivity}: java.lang.IllegalArgumentException: Unable to find native library: sundog at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2070) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2095) at android.app.ActivityThread.access$600(ActivityThread.java:134) at android.app.ActivityThread$H.handleMessage

We're trying to run a complex OpenGL app on a device whose native screen size is 1080p. Unfortunately, the device's 3D chipset isn't really good enough for a decent frame rate at this size. What we'd much prefer to do is the render at 720p (or less) and then do hardware accelerated upscaling to fill the screen. I know Android can do this automatically with 2D content (using ANativeWindow_lock() and friends). Is there any way to do this automatically for 3D content as well? For a GLSurfaceView, use: surfaceView = new GLSurfaceView(this); surfaceView.getHolder().setFixedSize(1280, 720); For a

My Android app has a simple "loader" NativeActivity with a very simple android_main() which only loads a different shared object and passes control to it: typedef void (*Tandroid_main)( android_app*); void android_main( android_app* state ) { void* glib = dlopen("libmain.so", RTLD_NOW); void* fmain = dlsym(glib, "android_main"); Tandroid_main libmain = (Tandroid_main)fmain; libmain(state) } This works well.. about half of the times. Other times it crashes since dlopen() fails and return NULL with errno=2 (No such file). Due to the strange inconsistency of this occurrence I suspected a timing