This code solved my problem :
MainActivity.java
public class MainActivity extends Activity {
private Scringo scringo;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
scringo = new Scringo(this);
...
findViewById(R.id.openChatRoomButton).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Scringo.openChatRooms(MainActivity.this);
}
});
...
}
main.xml
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
...
<Button
android:id="@+id/openChatRoomButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:text="@string/open_inbox_button_text" />
</RelativeLayout>