RxPermissions introduction,

RxPermissions introduction,

CreateRxPermissionsinstance :

RxPermissions rxPermissions = new RxPermissions(this); // where this is an Activity instance

Example : request the CAMERA permission (with Retrolambda for brevity, but not required)

// Must be done during an initialization phase like onCreaterxPermissions    .request(Manifest.permission.CAMERA)    .subscribe(granted -> {        if (granted) { // Always true pre-M           // I can control the camera now        } else {           // Oups permission denied        }    });

If you need to trigger the permission request from a specific event, you need to setup your event as an observable inside an initialization phase.

You can useJakeWharton/RxBindingto turn your view to an observable (not included in the library).

Example :

// Must be done during an initialization phase like onCreateRxView.clicks(findViewById(R.id.enableCamera))    .compose(rxPermissions.ensure(Manifest.permission.CAMERA))    .subscribe(granted -> {        // R.id.enableCamera has been clicked    });

If multiple permissions at the same time, the result is combined :

rxPermissions    .request(Manifest.permission.CAMERA,             Manifest.permission.READ_PHONE_STATE)    .subscribe(granted -> {        if (granted) {           // All requested permissions are granted        } else {           // At least one permission is denied        }    });

You can also observe a detailed result withrequestEachorensureEach:

rxPermissions .requestEach(Manifest.permission.CAMERA, Manifest.permission.READ_PHONE_STATE) .subscribe(permission -> { // will emit 2 Permission objects if (permission.granted) { // `permission.name` is granted ! } else if (permission.shouldShowRequestPermissionRationale) { // Denied permission without ask never again } else { // Denied permission with ask never again // Need to go to the settings } });

You can also get combined detailed result withrequestEachCombinedorensureEachCombined:

rxPermissions .requestEachCombined(Manifest.permission.CAMERA, Manifest.permission.READ_PHONE_STATE) .subscribe(permission -> { // will emit 1 Permission object if (permission.granted) { // All permissions are granted ! } else if (permission.shouldShowRequestPermissionRationale) // At least one denied permission without ask never again } else { // At least one denied permission with ask never again // Need to go to the settings } });

Look at thesampleapp for more.