Function AcquireASensorManagerInstance

Source/Player/AndroidMain.cpp:236–266

* AcquireASensorManagerInstance(android_app* app) * Workaround ASensorManager_getInstance() deprecation false alarm * for Android-N and before, when compiling with NDK-r15 */

 *    for Android-N and before, when compiling with NDK-r15
 */
static ASensorManager *AcquireASensorManagerInstance(android_app *app) {
    typedef ASensorManager *(*PF_GETINSTANCEFORPACKAGE)(const char *name);
    void *androidHandle = dlopen("libandroid.so", RTLD_NOW);
    PF_GETINSTANCEFORPACKAGE getInstanceForPackageFunc = (PF_GETINSTANCEFORPACKAGE)dlsym(androidHandle, "ASensorManager_getInstanceForPackage");

    if (getInstanceForPackageFunc) {
        JNIEnv *env = nullptr;
        app->activity->vm->AttachCurrentThread(&env, nullptr);

        jclass android_content_Context = env->GetObjectClass(app->activity->clazz);
        jmethodID midGetPackageName = env->GetMethodID(android_content_Context, "getPackageName", "()Ljava/lang/String;");
        jstring packageName= (jstring)env->CallObjectMethod(app->activity->clazz, midGetPackageName);

        const char *nativePackageName = env->GetStringUTFChars(packageName, 0);
        ASensorManager *mgr = getInstanceForPackageFunc(nativePackageName);
        env->ReleaseStringUTFChars(packageName, nativePackageName);
        app->activity->vm->DetachCurrentThread();
        if (mgr) {
            dlclose(androidHandle);
            return mgr;
        }
    }

    typedef ASensorManager *(*PF_GETINSTANCE)();
    PF_GETINSTANCE getInstanceFunc = (PF_GETINSTANCE) dlsym(androidHandle, "ASensorManager_getInstance");
    // by all means at this point, ASensorManager_getInstance should be available
    assert(getInstanceFunc);
    dlclose(androidHandle);

    return getInstanceFunc();
}

static void InitSensors(android_app *appState) {
    sensorManager = AcquireASensorManagerInstance(appState);