activity的使用(十一):监听电话

package com.example.androidtest;

import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.view.Menu;
import android.net.Uri;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.view.View;
import android.widget.TextView;

public class AndroidTest extends Activity {
	
	private TextView tv = null;
	private String logText = "";
	private TelephonyManager teleMgr = null;
	private MyPhoneStateListener myListener = null;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_android_test);
		
		tv = (TextView)findViewById(R.id.textView);
		
		teleMgr = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
		myListener = new MyPhoneStateListener();
	}
	
	public void onResume()
	{
		super.onResume();
		teleMgr.listen(myListener, PhoneStateListener.LISTEN_CALL_STATE);
	}
	
	public  void onPause()
	{
		super.onPause();
		teleMgr.listen(myListener, PhoneStateListener.LISTEN_NONE);
	}
	
	public void doClick(View target)
	{
		Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("tel:1235551212"));
		startActivity(intent);
	}
	
	
	public class MyPhoneStateListener extends PhoneStateListener
	{
		public void onCallStateChanged(int state, String incomingNumber)
		{
			super.onCallStateChanged(state, incomingNumber);
			
			switch(state) {
			case TelephonyManager.CALL_STATE_IDLE:
				logText = "call state idle... incoming number is[" + incomingNumber + "]\n" + logText;
				break;
			case TelephonyManager.CALL_STATE_RINGING:
				logText = "call state ringing...incoming number is[" + incomingNumber + "]\n" + logText;
				break;
			case TelephonyManager.CALL_STATE_OFFHOOK:
				logText = "call state Offhook...incoming number is [" + incomingNumber + "]\n" + logText;
				break;
			default:
				logText = "call state [" + state + "]incoming number is" + incomingNumber + "]\n" + logText;
				break;
			}
			tv.setText(logText);
		}
	}
	
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.android_test, menu);
		return true;
	}

	
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<Button
    android:id="@+id/callBtn"
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:text="@string/btn"
    android:onClick="doClick"
    />
<TextView
    android:id="@+id/textView"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    />    
</LinearLayout>

要添加权限：

 <uses-permission
        android:name="android.permission.READ_PHONE_STATE"></uses-permission>