Android 處理7.0以上的權限,有些東西會報空,比如打開相機黑屏,FileNotFund,
打開處理資源之前先看看有沒有權限

  //檢測是否有相機和讀寫文件權限
        if (ContextCompat.checkSelfPermission(UIUtils.getContext(), Manifest.permission.CAMERA)
                != PackageManager.PERMISSION_GRANTED
                || ContextCompat.checkSelfPermission(UIUtils.getContext(), Manifest.permission.WRITE_EXTERNAL_STORAGE)
                != PackageManager.PERMISSION_GRANTED) {
            requestPermissions(new String[]{Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE}, CAMERA_PERMISSIONS_REQUEST_CODE);
        } else {
            //打開相機獲取圖片
            test();
        }

Activity回調中

 @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);

        switch (requestCode) {
            case CAMERA_PERMISSIONS_REQUEST_CODE: {//調用系統相機申請拍照權限回調
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                    test();
                } else {
                    UIUtils.runOnUIToast("你拒絕了相機權限,無法使用二維碼掃描");
                }
                break;


            }

        }
    }

//所有權限列表(常用)

Manifest.permission.CAMERA //相機
Manifest.permission.WRITE_EXTERNAL_STORAGE //存儲
Manifest.permission.CALL_PHONE//打電話

部分常用權限(圖片來自互聯網)

image.png