RxPermissionsResult

Following the same approach that RxActivityResult does, RxPermissionsResult is a reactive wrapper around the permission's Android Api, which allows to get the data without breaking the observable chain.

Features:

• Request permissions at runtime from any class, as long as you supply a valid Activity or Fragment instance.
• Get the data back encapsulated in an observable and keep chaining.
• Survive to configuration changes.

SetUp

Add to top level gradle.build file

allprojects {

  repositories {

maven {
 url "https://jitpack.io" 
}

  
}
 
}

Add to app module gradle.build file

dependencies {
  //RxJava1
  compile 'com.github.VictorAlbertos.RxPermissionsResult:rx1:0.0.4'
  compile 'io.reactivex:rxjava:1.2.1'
//RxJava2
  compile 'com.github.VictorAlbertos.RxPermissionsResult:rx2:0.0.4'
  compile 'io.reactivex.rxjava2:rxjava:2.0.0' 
}

Usage

Call RxPermissionsResult.register in your Android Application.

public class SampleApp extends Application {

@Override public void onCreate() {

super.onCreate();

RxPermissionsResult.register(this);

  
}
 
}

You can call RxPermissionsResult.on(this).requestPermissions(permissions) supplying both, an Activity instance or a Fragment instance.

Limitation:: Your fragments need to extend from android.support.v4.app.Fragment instead of android.app.Fragment, otherwise they won't be notified.

String[] permissions = {
Manifest.permission.ACCESS_FINE_LOCATION
}
;  RxPermissionsResult.on(this).requestPermissions(permissions)
.subscribe(result ->

 result.targetUI()

  .showPermissionStatus(result.permissions(), result.grantResults())
);
  void showPermissionStatus(String[] permissions, int[] grantResults) {

  boolean granted = grantResults[0] == PackageManager.PERMISSION_GRANTED;
  if (granted) {

textView.setText(permissions[0] + " Granted")  
}
 else {

textView.setText(permissions[0] + "Not granted")  
}
 
}

Please pay attention to the targetUI() method in the Result object emitted.

This method returns a safety instance of the current Activity/ Fragment. Because the original one may be recreated (due to configuration changes or some other system events) it would be unsafe calling it.

Instead, you must call any method/variable of your Activity/ Fragment from this instance encapsulated in the Result object.

For a complete example about RxPermissionsResult, refer to this module if you are using RxJava1, or to this other one if using RxJava2.

Another author's libraries:

• ReactiveCache: A reactive cache for Android and Java which honors the Observable chain.
• RxActivityResult: A reactive-tiny-badass-vindictive library to break with the OnActivityResult implementation as it breaks the observables chain.
• RxSocialConnect: OAuth RxJava extension for Android.