Question

检查权限对话框一次又一次出现，尽管给予了权限并单击所有对话框，因为接受它会关闭应用程序。

我有一个帮助方法来检查多个权限，看看是否有任何权限被授予。

            public static boolean hasPermissions(Context context, String... permissions) {
        if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && context != null && permissions != null) {
            for (String permission : permissions) {
                if (ActivityCompat.checkSelfPermission(context, permission) != PackageManager.PERMISSION_GRANTED) {
                    return false;
                }
            }
        }
        return true;
    }
 int PERMISSION_ALL = 1;

         String[] PERMISSIONS = {Manifest.permission.ACCESS_FINE_LOCATION,Manifest.permission.CAMERA};
       if(!hasPermissions(this, PERMISSIONS)){
            Log.d("permission","permission");
            ActivityCompat.requestPermissions(this, PERMISSIONS, PERMISSION_ALL);

        }

我希望它在授予权限后加载相同的活动，即MainActivity。

任何人都可以指出多次询问权限的原因。

Answer 1

这个派对迟到了，但试试这段代码

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
        if (checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
        } else {
            requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 666);  // Comment 26
        }
    }

    onAvail();
    onLoad();
}

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

    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    switch (requestCode) {

        case 666: // User selected Allowed  Permission Granted
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {

                Snackbar s = Snackbar.make(findViewById(android.R.id.content), "Permission Granted", Snackbar.LENGTH_LONG);
                View snackbarView = s.getView();
                snackbarView.setBackgroundColor(Color.WHITE);
                TextView textView = (TextView) snackbarView.findViewById(android.support.design.R.id.snackbar_text);
                textView.setTextColor(Color.RED);
                textView.setTextSize(18);
                textView.setMaxLines(6);
                s.show();

                // do your work here

                // User selected the Never Ask Again Option Change settings in app settings manually
            } else if (Build.VERSION.SDK_INT >= 23 && !shouldShowRequestPermissionRationale(permissions[0])) {

                AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this, R.style.MyAlertDialogStyle);
                alertDialogBuilder.setTitle("Change Permissions in Settings");
                alertDialogBuilder
                        .setMessage("Click SETTINGS to Manually Set\n\n" + "Permissions to use Database Storage")
                        .setCancelable(false)
                        .setPositiveButton("SETTINGS", new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int id) {
                                Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
                                Uri uri = Uri.fromParts("package", getPackageName(), null);
                                intent.setData(uri);
                                startActivityForResult(intent, 1000);
                            }
                        });

                AlertDialog alertDialog = alertDialogBuilder.create();
                alertDialog.show();

            } else {
                // User selected Deny Dialog to EXIT App ==> OR <== RETRY to have a second chance to Allow Permissions
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_DENIED) {

                AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this, R.style.MyAlertDialogStyle);
                alertDialogBuilder.setTitle("Second Chance");
                alertDialogBuilder
                        .setMessage("Click RETRY to Set Permissions to Allow\n\n" + "Click EXIT to the Close App")
                        .setCancelable(false)
                        .setPositiveButton("RETRY", new DialogInterface.OnClickListener() {

                            public void onClick(DialogInterface dialog, int id) {
                                Intent i = new Intent(MainActivity.this, MainActivity.class);
                                i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
                                startActivity(i);
                            }
                        })
                        .setNegativeButton("EXIT", new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int id) {
                                finish();
                                dialog.cancel();
                            }
                        });
                AlertDialog alertDialog = alertDialogBuilder.create();
                alertDialog.show();
            }
    }
    break;
    }};

Answer 2

请检查您在此处提到的权限 String [] PERMISSIONS = {Manifest.permission.ACCESS_FINE_LOCATION，Manifest.permission.CAMERA};

应在清单文件中提供。

Answer 3

Please do the following changes in the corresponding places.

 if (hasPermissions(this, PERMISSIONS)) {  
            // you have permissions  
            //Do your work.      
 }

replace **hasPermissions()** method with following code    

   public static boolean hasPermissions(Context context, String... permissions) {   
     int result;  
     List<String> listPermissionsNeeded = new ArrayList<>();  
        if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && context != null && permissions != null) {  
            for (String permission : permissions) {  
                result = ContextCompat.checkSelfPermission(context, permission);  
                if (result != PackageManager.PERMISSION_GRANTED) {  
                    listPermissionsNeeded.add(permission);  
                }  
            }  
            if (!listPermissionsNeeded.isEmpty()) {  
                ActivityCompat.requestPermissions(this, listPermissionsNeeded.toArray(new String[listPermissionsNeeded.size()]), PERMISSION_ALL);  
                return false;  
            }  
        }  
              return true;  
    }

replace **onRequestPermissionsResult()** with following code

@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions,
                                       int[] grantResults) {
    Log.d("requestCode", String.valueOf(requestCode));
    switch (requestCode) {
        case PERMISSION_ALL: {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED && grantResults[1] == PackageManager.PERMISSION_GRANTED) {
                //Do your work.
                Toast.makeText(MainActivity.this, "Permission Recieved", Toast.LENGTH_LONG).show();
            } else {
                Toast.makeText(this, "Until you grant the permission, we cannot proceed further", Toast.LENGTH_SHORT).show();
            }
        }
        default:
            super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    }
}

权限请求对话框出现多次android

3 个答案: