android-监听来电和去电
要监听android打电话和接电话，只需下面2步骤
1.第一步，写一个Receiver继承自BroadcastReceiver
? ?? ?? ?? ?</intent-filter>
</receiver>
?
<uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission>
? ? ? ? <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"></uses-permission>
