Android 处理7.0以上的权限,有些东西会报空,比如打开相机黑屏,FileNotFund,
打开处理资源之前先看看有没有权限

  //检测是否有相机和读写文件权限
        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 {
            //打开相机获取图片
            test();
        }

Activity回调中

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

        switch (requestCode) {
            case CAMERA_PERMISSIONS_REQUEST_CODE: {//调用系统相机申请拍照权限回调
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                    test();
                } else {
                    UIUtils.runOnUIToast("你拒绝了相机权限,无法使用二维码扫描");
                }
                break;


            }

        }
    }

//所有权限列表(常用)

Manifest.permission.CAMERA //相机
Manifest.permission.WRITE_EXTERNAL_STORAGE //存储
Manifest.permission.CALL_PHONE//打电话

部分常用权限(图片来自互联网)

image.png