学步园

通过向TelephonyManager注册一个listener，就可以监听手机的一些状态的变化。

自定义的监听器：

class MyPhoneStateListener extends PhoneStateListener<br /> {<br /> Context context;<br /> public MyPhoneStateListener(Context con)<br /> {<br /> context = con;<br /> }</p> <p> public void onCallForwardingIndicatorChanged(boolean cfi)<br /> {</p> <p> }</p> <p> public void onCallStateChanged(int state, String incomingNumber)<br /> {<br /> switch(state)<br /> {<br /> case TelephonyManager.CALL_STATE_IDLE:<br /> Toast.makeText(context, "call not answer", Toast.LENGTH_LONG).show();<br /> break;</p> <p> case TelephonyManager.CALL_STATE_RINGING:<br /> Toast.makeText(context, "incoming", Toast.LENGTH_LONG).show();</p> <p> break;</p> <p> case TelephonyManager.CALL_STATE_OFFHOOK:<br /> Toast.makeText(context, "in a call", Toast.LENGTH_LONG).show();<br /> break;<br /> }<br /> }</p> <p> public void onCellLocationChanged(CellLocation location) {}</p> <p> public void onDataActivity(int direction) {}</p> <p> public void onDataConnectionStateChanged(int state) {}</p> <p> public void onMessageWaitingIndicatorChanged(boolean mwi) {}</p> <p> public void onServiceStateChanged(ServiceState serviceState) {}</p> <p> public void onSignalStrengthChanged(int asu) {}<br /> }

注册自己的监听器：

String srvcName = Context.TELEPHONY_SERVICE;<br /> TelephonyManager telephonyManager = (TelephonyManager)getSystemService(srvcName);</p> <p> MyPhoneStateListener phoneStateListener = new MyPhoneStateListener(this);<br /> telephonyManager.listen(phoneStateListener,<br /> PhoneStateListener.LISTEN_CALL_FORWARDING_INDICATOR |<br /> PhoneStateListener.LISTEN_CALL_STATE |<br /> PhoneStateListener.LISTEN_CELL_LOCATION |<br /> PhoneStateListener.LISTEN_DATA_ACTIVITY |<br /> PhoneStateListener.LISTEN_DATA_CONNECTION_STATE |<br /> PhoneStateListener.LISTEN_MESSAGE_WAITING_INDICATOR |<br /> PhoneStateListener.LISTEN_SERVICE_STATE |<br /> PhoneStateListener.LISTEN_SIGNAL_STRENGTH);