private static final int REQUEST_EXTERNAL_STORAGE = 0;
private static final int REQUEST_CAMERA = 2;
private static String[] PERMISSIONS_STORAGE = {
        Manifest.permission.READ_EXTERNAL_STORAGE,
        Manifest.permission.WRITE_EXTERNAL_STORAGE,

Manifest.permission.CAMERA};

// TODO: 2016/10/6 選擇圖片前，為6.0動態新增許可權
 
int permission = ActivityCompat.checkSelfPermission(SubmitCompleteActivity.this,
        Manifest.permission.READ_EXTERNAL_STORAGE);
int permission2 = ActivityCompat.checkSelfPermission(SubmitCompleteActivity.this, Manifest.permission.CAMERA);
if (permission != PackageManager.PERMISSION_GRANTED) {
    // 沒有許可權，加許可權
 
    ActivityCompat.requestPermissions(SubmitCompleteActivity.this, PERMISSIONS_STORAGE,
            REQUEST_EXTERNAL_STORAGE);
} else if (permission2 != PackageManager.PERMISSION_GRANTED) {
    ActivityCompat.requestPermissions(SubmitCompleteActivity.this, PERMISSIONS_STORAGE, REQUEST_CAMERA);
} else 
 
{//加了許可權
    //開啟相簿頁面
    PhotoPicker.builder()
            .setPhotoCount(photoNumber)
            .setGridColumnCount(PHOTO_MAX_ROW_NUM)
            .start(SubmitCompleteActivity.this);
}