1.) In `android/app/src/main/AndroidManifest.xml` add these permissions

```xml
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus"/>

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
```

2.) In `android/settings.gradle`, includes WebRTCModule
```gradle
include ':WebRTCModule', ':app'
project(':WebRTCModule').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-webrtc/android')
```

3.) In `android/app/build.gradle`, add WebRTCModule to dependencies
```gradle
dependencies {
  ...
  compile project(':WebRTCModule')
}

```

4.) In `android/app/src/main/java/com/xxx/MainApplication.java`

After 0.19.0
```java
import com.oney.WebRTCModule.WebRTCModulePackage;  // <--- Add this line
...
    @Override
    protected List<ReactPackage> getPackages() {
      return Arrays.<ReactPackage>asList(
        new MainReactPackage(),
        new WebRTCModulePackage()                  // <--- Add this line
      );
    }
```
Before 0.18.0
```java
import com.oney.WebRTCModule.WebRTCModulePackage;  // <--- Add this line
...

 public class MainActivity extends Activity implements DefaultHardwareBackBtnHandler {
 ...

     .addPackage(new MainReactPackage())
     .addPackage(new WebRTCModulePackage())        // <--- Add this line
     .setUseDeveloperSupport(BuildConfig.DEBUG)
```


## CLEAN PROCESS

if you encounter any build time errors, like "linking library not found",  
try the cleaning steps below, and do it again carefully with every steps.

1. remove npm module: `rm -rf $YourProject/node_modules/react-native-webrtc`
2. clean npm cache: `npm cache clean`
3. clear temporary build files ( depends on your env )
    * ANDROID: clear intermediate files in `gradle buildDir`
    * iOS: in xocde project, click `Product` -> `clean`
4. `npm install react-native-webrtc`