Android项目实战（五十五）

    @Override
    public boolean moveTaskToBack(boolean nonRoot) {
        return super.moveTaskToBack(nonRoot);
    }

@Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (!this.isTaskRoot()) {
            Intent mainIntent = getIntent();
            String action = mainIntent.getAction();
            if (mainIntent.hasCategory(Intent.CATEGORY_LAUNCHER) && Intent.ACTION_MAIN.equals(action)) {
                finish();
                return;
            }
        }
    }