监听手机状态--PhoneStateListener

最新推荐文章于 2018-01-16 22:05:00 发布

原创最新推荐文章于 2018-01-16 22:05:00 发布 · 5.8k 阅读

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CC 4.0 BY-SA版权

文章标签：

#手机 #service #string #signal #class

本文介绍如何通过向TelephonyManager注册自定义监听器来监听手机的状态变化，包括通话状态、信号强度等，并通过Toast消息展示不同状态的提示。

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

注册自己的监听器：

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