Karumi/Dexter

dependencies{
    implementation 'com.karumi:dexter:6.2.3'
}

public MyActivity extends Activity {
	@Override public void onCreate() {
		super.onCreate();
		Dexter.withContext(activity)
			.withPermission(permission)
			.withListener(listener)
			.check();
	}
}

Dexter.withContext(this)
	.withPermission(Manifest.permission.CAMERA)
	.withListener(new PermissionListener() {
		@Override public void onPermissionGranted(PermissionGrantedResponse response) {/* ... */}
		@Override public void onPermissionDenied(PermissionDeniedResponse response) {/* ... */}
		@Override public void onPermissionRationaleShouldBeShown(PermissionRequest permission, PermissionToken token) {/* ... */}
	}).check();

PermissionListener dialogPermissionListener =
	DialogOnDeniedPermissionListener.Builder
		.withContext(context)
		.withTitle("Camera permission")
		.withMessage("Camera permission is needed to take pictures of your cat")
		.withButtonText(android.R.string.ok)
		.withIcon(R.mipmap.my_icon)
		.build();

PermissionListener snackbarPermissionListener =
	SnackbarOnDeniedPermissionListener.Builder
		.with(view, "Camera access is needed to take pictures of your dog")
		.withOpenSettingsButton("Settings")
        .withCallback(new Snackbar.Callback() {
            @Override
            public void onShown(Snackbar snackbar) {
                // Event handler for when the given Snackbar is visible
            }
            @Override
            public void onDismissed(Snackbar snackbar, int event) {
                // Event handler for when the given Snackbar has been dismissed
            }
        }).build();

PermissionListener snackbarPermissionListener = /*...*/;
PermissionListener dialogPermissionListener = /*...*/;
PermissionListener compositePermissionListener = new CompositePermissionListener(snackbarPermissionListener, dialogPermissionListener, /*...*/);

Dexter.withContext(this)
	.withPermissions(
		Manifest.permission.CAMERA,
		Manifest.permission.READ_CONTACTS,
		Manifest.permission.RECORD_AUDIO
	).withListener(new MultiplePermissionsListener() {
	    @Override public void onPermissionsChecked(MultiplePermissionsReport report) {/* ... */}
	    @Override public void onPermissionRationaleShouldBeShown(List<PermissionRequest> permissions, PermissionToken token) {/* ... */}
	}).check();

MultiplePermissionsListener dialogMultiplePermissionsListener =
	DialogOnAnyDeniedMultiplePermissionsListener.Builder
		.withContext(context)
		.withTitle("Camera & audio permission")
		.withMessage("Both camera and audio permission are needed to take pictures of your cat")
		.withButtonText(android.R.string.ok)
		.withIcon(R.mipmap.my_icon)
		.build();

MultiplePermissionsListener snackbarMultiplePermissionsListener =
	SnackbarOnAnyDeniedMultiplePermissionsListener.Builder
		.with(view, "Camera and audio access is needed to take pictures of your dog")
		.withOpenSettingsButton("Settings")
        .withCallback(new Snackbar.Callback() {
            @Override
            public void onShown(Snackbar snackbar) {
                // Event handler for when the given Snackbar is visible
            }
            @Override
            public void onDismissed(Snackbar snackbar, int event) {
                // Event handler for when the given Snackbar has been dismissed
            }
        })
		.build();

MultiplePermissionsListener snackbarMultiplePermissionsListener = /*...*/;
MultiplePermissionsListener dialogMultiplePermissionsListener = /*...*/;
MultiplePermissionsListener compositePermissionsListener = new CompositeMultiplePermissionsListener(snackbarMultiplePermissionsListener, dialogMultiplePermissionsListener, /*...*/);

Dexter.withContext(context)
	.withPermission(permission)
	.withListener(listener)
	.onSameThread()
	.check();

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

Dexter.withContext(context)
	.withPermission(permission)
	.withListener(listener)
	.withErrorListener(new PermissionRequestErrorListener() {
		@Override public void onError(DexterError error) {
			Log.e("Dexter", "There was an error: " + error.toString());
		}
	}).check();

button.setOnClickListener {
    Dexter.withContext(this@MainActivity)
                        .withPermissions(
                            Manifest.permission.ACCESS_COARSE_LOCATION
                            ,Manifest.permission.ACCESS_FINE_LOCATION)
                        .withListener(object: MultiplePermissionsListener {
                            override fun onPermissionsChecked(report: MultiplePermissionsReport?) {
                                report?.let {
                                    if(report.areAllPermissionsGranted()){
                                        toast("OK")
                                    }
                                }
                            }
                            override fun onPermissionRationaleShouldBeShown(
                                permissions: MutableList<PermissionRequest>?,
                                token: PermissionToken?
                            ) {
                                // Remember to invoke this method when the custom rationale is closed
                                // or just by default if you don't want to use any custom rationale.
                                token?.continuePermissionRequest()
                            }
                        })
                        .withErrorListener {
                            toast(it.name)
                        }
                        .check()
}

Copyright 2015 Karumi

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.