Android Runtime Permissions with Dexter Library (Simple Approach)

App Permission with Dexter Library

Android Runtime Permission With Dexter Library

Implementing Android runtime permissions intoduces in Mashmallow is a hard process and developer needs to write lot of code just to get a single permission.

User has to allow or deny any permission at runtime.

We are going to Use Dexter library to   simplify the process of adding the runtime permissions . 

With Dexter Library , we can have get "Single" runtime permission as well as "Multiple" runtime permission with just a
few lines of code .

You can Download the Project from Github link :

DOWNLOAD PROJECT

or 

https://github.com/jaspreet1990/runtime-permission-dexter-library

Below the are steps to implement Dexter Library 

Step 1 :

Add Library in Gradle :

dependencies {
    
    implementation 'com.karumi:dexter:4.2.0'    // Dexter runtime permissions

}

Step 1 a :

Add code on button click to use Dexter Library  for single Permission:

  Dexter.withActivity(this)
                        .withPermission(Manifest.permission.CAMERA)
                        .withListener(new PermissionListener() {
                            @Override public void onPermissionGranted(PermissionGrantedResponse response)
                            {
                                Toast.makeText(MainActivity.this,"Permession Granted with Dexter",Toast.LENGTH_SHORT).show();
                            }
                            @Override public void onPermissionDenied(PermissionDeniedResponse response)
                            {
                                Toast.makeText(MainActivity.this,"Permession Deny",Toast.LENGTH_SHORT).show();
                               if(response.isPermanentlyDenied()){
                                   // navigate to app setting

                                   Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
                                           Uri.fromParts("package", getPackageName(), null));
                                   intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                                   startActivity(intent);
                               }

                            }
                            @Override public void onPermissionRationaleShouldBeShown(PermissionRequest permission, PermissionToken token)
                            {
                                    token.continuePermissionRequest();
                            }
                        }).check();

Step 1 b :

Add code on button click to use Dexter Library  for Multiple Permission:

   Dexter.withActivity(this)
                        .withPermissions(
                                Manifest.permission.CAMERA,
                                Manifest.permission.WRITE_EXTERNAL_STORAGE
                        )
                        .withListener(new MultiplePermissionsListener() {
                    @Override public void onPermissionsChecked(MultiplePermissionsReport report) {
                        if (report.areAllPermissionsGranted()) {
                            // do you work now
                        }
                        for (int i=0;i<report.getDeniedPermissionResponses().size();i++) {
                            Log.d("dennial permision res", report.getDeniedPermissionResponses().get(i).getPermissionName());
                        }

                        // check for permanent denial of any permission
                        if (report.isAnyPermissionPermanentlyDenied()) {
                            // permission is denied permenantly, navigate user to app settings

                            Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
                                    Uri.fromParts("package", getPackageName(), null));
                            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                            startActivity(intent);
                        }
                        }
                    @Override public void onPermissionRationaleShouldBeShown(List<PermissionRequest> permissions, PermissionToken token)
                    {
                        token.continuePermissionRequest();
                    }
                }).check();

Download the Full Code from here  
or 

https://github.com/jaspreet1990/runtime-permission-dexter-library