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.