This library allows the usage of RxJava with the new Android M permission model.

Example (with Retrolambda for brevity, but not required):

// Must be done during an initialization phase like onCreate
RxPermissions.getInstance(this)
    .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 use JakeWharton/RxBinding to turn your view to an observable (not included in the library).

Example :

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

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

RxPermissions.getInstance(this)
    .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 with requestEach or ensureEach :

RxPermissions.getInstance(this)
    .requestEach(Manifest.permission.CAMERA,
             Manifest.permission.READ_PHONE_STATE)
    .subscribe(permission -> { // will emit 2 Permission objects
        if (permission.granted) {
           // `permission.name` is granted !
        }
    });

Look at the sample app for more.

As mentioned above, because your app may be restarted during the permission request, the request must be done during an initialization phase. This may be Activity.onCreate/onResume, or View.onFinishInflate or others.

If not, and if your app is restarted during the permission request (because of a configuration change for instance), the user's answer will never be emitted to the subscriber.

Version 0.6.0 replaced the methods request(trigger, permission...) and requestEach(trigger, permission...) by composables methods ensure(permission...) and ensureEach(permission...). Read the second example to see how to use them.

This library is still beta, so contributions are welcome. I'm currently using it in production since months without issue.

• Avoid worrying about the framework version. If the sdk is pre-M, the observer will automatically receive a granted result.

• Prevents you to split your code between the permission request and the result handling. Currently without this library you have to request the permission in one place and handle the result in Activity.onRequestPermissionsResult().

• All what RX provides about transformation, filter, chaining...

To use this library your minSdkVersion must be >= 9.

In your build.gradle :

repositories {
    jcenter() // If not already there
}

dependencies {
    compile 'com.tbruyelle.rxpermissions:rxpermissions:0.7.0@aar'
}