如何检查片段中的权限

Question

我想检查片段内的权限。

我的代码：

         // Here, thisActivity is the current activity
        if (ContextCompat.checkSelfPermission(getActivity(),
                Manifest.permission.ACCESS_FINE_LOCATION)
                != PackageManager.PERMISSION_GRANTED) {

            // Should we show an explanation?
            if (ActivityCompat.shouldShowRequestPermissionRationale(getActivity(),
                    android.Manifest.permission.ACCESS_FINE_LOCATION)) {

                // Show an explanation to the user *asynchronously* -- don't block
                // this thread waiting for the user's response! After the user
                // sees the explanation, try again to request the permission.

            } else {

                // No explanation needed, we can request the permission.

                ActivityCompat.requestPermissions(getActivity(),
                        new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION},
                        1);

                // MY_PERMISSIONS_REQUEST_READ_CONTACTS is an
                // app-defined int constant. The callback method gets the
                // result of the request.
            }
        }

但是 onRequestPermissionsResult 在允许或拒绝后不调用。

 @Override
public void onRequestPermissionsResult(int requestCode,
                                       String permissions[], int[] grantResults) {
    switch (requestCode) {
        case 1: {
            Log.e("test","0");
            // If request is cancelled, the result arrays are empty.
            if (grantResults.length > 0
                    && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                // permission was granted, yay! Do the
                // contacts-related task you need to do.
                //yes

                Log.e("test","1");

                Intent intent = new Intent(getActivity(), MapsActivity.class);
                intent.putExtra("latitude", 35.694828);
                intent.putExtra("longitude", 51.378129);
                startActivity(intent);

            } else {
                utilityFunctions.showSweetAlertWarning(getActivity(),r.getString(R.string.str_warning_title_empty),
                        r.getString(R.string.str_you_must_allow_this_permission_toast),
                        r.getString(R.string.str_warning_btn_login));

                Log.e("test","2");
            }
            return;
        }

        // other 'case' lines to check for other
        // permissions this app might request
    }
}

原文由 S.M_Emamian 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

我已完成以下操作以检查片段内的权限。

 if (ActivityCompat.checkSelfPermission(getContext(),
            android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
            ActivityCompat.checkSelfPermission(getContext(),
                    android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
         requestPermissions(getActivity(),
                new String[]{android.Manifest.permission.ACCESS_COARSE_LOCATION,
                        android.Manifest.permission.ACCESS_FINE_LOCATION},
                REQUEST_LOCATION);
    } else {
        Log.e("DB", "PERMISSION GRANTED");
    }

更新

由于 Fragment.requestPermissions 现在 已弃用，Google 建议使用 registerForActivityResult 代替。

我已经完成了这样的请求：

 val permissionLauncher = registerForActivityResult(
    ActivityResultContracts.RequestPermission()
) { isGranted ->
    if (isGranted) {
        // Do if the permission is granted
    }
    else {
        // Do otherwise
    }
}

permissionLauncher.launch(Manifest.permission.ACCESS_FINE_LOCATION)

有关此方法的更多文档，您可以查看 此链接。

原文由 rookieDeveloper 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 2

我就是这样做的，它对我有用。谢谢！

对于活动：

 ActivityCompat.requestPermissions(this, permissionsList, REQUEST_CODE);

对于片段：

 requestPermissions(permissionsList, REQUEST_CODE);

原文由 ThetNaing Mizo 发布，翻译遵循 CC BY-SA 3.0 许可协议