Question

我正在为android编写应用程序。当我打开我的应用程序时首先获取异常消息。这对我来说是不同的，因为我制作了很多应用程序并且没有这样的东西。现在我正在试图获得用户的许可，毫无例外。当我在Android Studio上运行按钮时。模拟器给我带有请求权限框的错误消息。在我进入我的活动之后，我只想从用户那里获取请求权限而不会收到异常消息。通过这种方式我是如此初学者这个主题。我怎么能这样做？

我的xml：

<uses-permission android:name="android.permission.CAMERA" />

我的代码：

   ActivityCompat.requestPermissions(this,
                new String[]{ Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE },
                PERMISSIONS_MULTIPLE_REQUEST);

Answer 1

        int requestCode = 100;

        // Check if permission is already granted. If Granted you need not ask
        if (ContextCompat
            .checkSelfPermission(getActivity(),
                Manifest.permission.CAMERA) != (int)PackageManager.PERMISSION_GRANTED &&
            ContextCompat.checkSelfPermission(getActivity(),
                Manifest.permission.WRITE_EXTERNAL_STORAGE)
            != (int)PackageManager.PERMISSION_GRANTED) {

            // Check if user has opted "Never show again"
            if (ActivityCompat.shouldShowRequestPermissionRationale(getActivity(), Manifest.permission.CAMERA) ||
                ActivityCompat.shouldShowRequestPermissionRationale(getActivity(), Manifest.permission.WRITE_EXTERNAL_STORAGE)) {

                requestPermissions(new String[] {
                    Manifest.permission.CAMERA,
                    Manifest.permission.WRITE_EXTERNAL_STORAGE
                }, requestCode);
            }
        } else {
            // Application has the requested permission.
            // Write your further logic, what's next after permission is granted
        }

如何在没有异常的情况下获得许可？

1 个答案: