[Android] monitors the power-off and call status

The basic idea of listening to the phone status on Android is to register and accept the broadcast of the phone status. The implementation is as follows:

First, you need the following permissions to listen to the phone status:

<Uses-Permission Android: Name = "android. Permission. read_phone_state"/>

<Uses-Permission Android: Name = "android. Permission. process_outgoing_cils"/>

Second, accept the broadcast of phone status:

Public class phonereceiver extends broadcastreceiver {Private Static final string tag = "phonereceiver"; Public void onreceive (context, intent) {log. I (TAG, "onreceive ()"); string action = intent. getaction (); If (action. equals (intent. action_new_outgoing_call) {// call String outnumber = This. getresultdata (); // call number} else if ("android. intent. action. phone_state ". equals (Action) {// call String state = intent. getstringextra (telephonymanager. extra_state); string innumber = intent. getstringextra (telephonymanager. extra_incoming_number); // call number if (state. equalsignorecase (telephonymanager. extra_state_ringing) {// The phone is ringing} else if (state. equalsignorecase (telephonymanager. extra_state_idle) {// hang up} else if (state. equalsignorecase (telephonymanager. extra_state_offhook) {// disconnect, call status }}}}

Finally, in androidmanifest. XML, configure the handler:

        <receiver android:name=".PhoneReceiver" >            <intent-filter>                <action android:name="android.intent.action.NEW_OUTGOING_CALL" />                <action android:name="android.intent.action.PHONE_STATE" />            </intent-filter>        </receiver>