问多个权限Android

Question

我正在修改现有的Face Tracker应用Android的面部识别示例项目。我遇到了请求多个永久权限的问题。下面的方法是现有方法的修改版本，该方法成功创建了一个弹出窗口以请求摄像机权限。我试图用存储权限复制它，但到目前为止我一直没有成功，我不确定需要在这里更改什么。

 private void requestAllPermissions() {
    Log.w(TAG, "Camera + Storage permissions are not granted. Requesting permissions");

    final String[] permissions = new String[]{Manifest.permission.CAMERA};
    final String[] permissions2 = new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE};


    if (!ActivityCompat.shouldShowRequestPermissionRationale(this,
            Manifest.permission.CAMERA)) {
        ActivityCompat.requestPermissions(this, permissions, RC_HANDLE_CAMERA_PERM);
        return;
    }

    //new
    if (!ActivityCompat.shouldShowRequestPermissionRationale(this,
            Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
        ActivityCompat.requestPermissions(this, permissions2, RC_HANDLE_STORAGE_PERM);
        return;
    }


    final Activity thisActivity = this;

    View.OnClickListener listener = new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            ActivityCompat.requestPermissions(thisActivity, permissions,
                    RC_HANDLE_CAMERA_PERM);
        }
    };

    View.OnClickListener listener2 = new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            ActivityCompat.requestPermissions(thisActivity, permissions2,
                    RC_HANDLE_STORAGE_PERM);
        }
    };

    Snackbar.make(mGraphicOverlay, R.string.permission_camera_rationale,
            Snackbar.LENGTH_INDEFINITE)
            .setAction(R.string.ok, listener)
            .show();

    Snackbar.make(mGraphicOverlay, R.string.permission_storage_rationale,
            Snackbar.LENGTH_INDEFINITE)
            .setAction(R.string.ok, listener2)
            .show();
}