Question

当我的片段被夸大时，它会根据android 6.0+中的要求为权限dialog box打开WRITE_EXTERNAL_STORAGE。我已经按照每个教程进行了操作，但是在给出或拒绝许可时我的所有操作都没有执行。我希望应用关闭，并在权限被拒绝时显示祝酒，这意味着重新打开应用时的permission would be asked again。

片段开始：

public class SecondFragment extends Fragment {

View myView;

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
    myView = inflater.inflate(R.layout.second_layout, container, false);
    configureImageButton();
    ((MainActivity) getActivity()).setActionBarTitle("App");

    if (ContextCompat.checkSelfPermission(getActivity(),
            Manifest.permission.WRITE_EXTERNAL_STORAGE)
            != PackageManager.PERMISSION_GRANTED) {
        if (ActivityCompat.shouldShowRequestPermissionRationale(getActivity(),
                Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
        } else {
            ActivityCompat.requestPermissions(getActivity(),
                    new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
                    1);
        }
    }

onRequestPermissionsResult：

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
    switch (requestCode) {
        case 1:
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                Snackbar.make(myView, "Permission Granted.", Snackbar.LENGTH_LONG).show();
            } else if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_DENIED) {
                Toast.makeText(getActivity(), "Reopen app and allow permission.", Toast.LENGTH_LONG).show();
                getActivity().finish();
            }
    }
}

该应用确实授予/拒绝权限，但忽略了吐司或小吃吧。所有建议表示赞赏。谢谢！

Answer 1

里面片段有一些变化请尝试下面的

 private void checkLocationPermission() {
    if (ContextCompat.checkSelfPermission(this.mContext, Manifest.permission.WRITE_EXTERNAL_STORAGE)
            != PackageManager.PERMISSION_GRANTED) {

        // Should we show an explanation?
        if (shouldShowRequestPermissionRationale(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {


            //Prompt the user once explanation has been shown
            requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
                    MY_PERMISSIONS_REQUEST_CODE);


        } else {
            // No explanation needed, we can request the permission.
            requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
                    MY_PERMISSIONS_REQUEST_CODE);
        }
    }
}

你案件中的MY_PERMISSIONS_REQUEST_CODE = 1

Answer 2

（1）如果您的应用已被授予，则您无法通过此代码查看权限对话框。

if (ContextCompat.checkSelfPermission(getActivity(),
        Manifest.permission.WRITE_EXTERNAL_STORAGE)
        != PackageManager.PERMISSION_GRANTED)

因此，请转到设置 - 应用程序 - 您的应用 - 并禁用已授予的权限，然后再次运行您的应用。

（2）你的onCreateView是否正确返回myView？在您的示例代码中，没有＆＃34;返回myView;＆＃34;

Answer 3

public static final int RequestPermissionCodeStorage = 105; // Declare Global Variable    

     public boolean checkStoragePermission() {

                if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {

                    int result = ContextCompat.checkSelfPermission(this,
                            Manifest.permission.WRITE_EXTERNAL_STORAGE);
                    if (result == PackageManager.PERMISSION_GRANTED) {
                        return true;
                    } else {
                        ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, RequestPermissionCodeStorage);
                        return false;
                    }
                } else {
                    return true;
                }
            }


    @Override
        public void onRequestPermissionsResult(int requestCode,
                                               String permissions[], int[] grantResults) {
            switch (requestCode) {

                case RequestPermissionCodeStorage: {

                    if (grantResults.length > 0
                            && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                    } else {
                        Toast.makeText(this, "Allow Permission of Storage", Toast.LENGTH_LONG).show();
                        finish();
                    }
                    return;
                }
            }
        }

行动不能解决权限被拒绝

3 个答案: