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Documentation related to Android-5.1 based Firmware releases 

 

Documentation related to Android-4.2.2 based Firmware releases 

 

 

In order to use the off/on hook events of the handset for 3rd party Applications, please check out codes below:

Maxwell Phone app is using com.maxwell.action.CMBS.CRADLE.EVENT for on/off hook events.

private static final String ACTION_CRADLE_EVENT = "com.maxwell.action.CMBS.CRADLE.EVENT"; 
private static final int EVENT_OFF_HOOK = 1; 
private static final int EVENT_ON_HOOK = 2;

public void onResume() {
     IntentFilter intentFilter = new IntentFilter(ACTION_CRADLE_EVENT);
     registerReceiver(mMyHandsetObserver, intentFilter);
     super.onResume(); 
}   


public void onDestroy() {
     unregisterReceiver(mMyHandsetObserver);
     super.onDestroy(); 
}   


private class MyHandsetObserver extends BroadcastReceiver {
     @Override
     public void onReceive(Context context, Intent intent) {
         if (intent.getAction().equals(ACTION_CRADLE_EVENT)) {
             int state = intent.getIntExtra("EXTRA_CRADLE_EVENT_TYPE", -1);
             switch (state) {
                 case EVENT_ON_HOOK:
                     mTextView.setText("Handset: Disconnected");
                     break;
                 case EVENT_OFF_HOOK:
                     mTextView.setText("Handset: Connected");
                     break;
             }
         }
     }
}




In AndroidManifest.xml
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />

Remark: If problems raising up after the update to a Android-5.1 based firmware, please be aware, that the virtual machine was changed from "dalvik" (in jellybean) to "art" (in lollipop) which is more strict in case of native code (https://developer.android.com/guide/practices/verifying-apps-art.html). Unfortunately it is not possible to switch back to dalvik in Lollipop.

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