public void destroy() {
    nativeDestroy(mNativeObject);
    mNativeObject = 0;
}

static void nativeDestroy(JNIEnv* env, jclass clazz, jlong ptr) {
    sp<BLASTBufferQueue> queue = reinterpret_cast<BLASTBufferQueue*>(ptr);
    queue->decStrong((void*)nativeCreate);
}

调用 nativeDestroy() 递减强引用计数。mNativeObject 设置为 0。