Android 监听来电和去电状态
要实现监听到打电话和接电话的状态，需要用到广播接受者BroadcastReceiver，其实现代码请参考如下;
一、定义一个类，继承BroadcastReceiver，重写onReceive()方法。
1 package com.example.phonereceiver; 2 3 import android.app.Service; 4 import android.content.BroadcastReceiver; 5 import android.content.Context; 6 import android.content.Intent; 7 import android.telephony.TelephonyManager; 8 9 public class PhoneReceiver extends BroadcastReceiver { 10 11 @Override 12 public void onReceive(Context context, Intent intent) { 13 if (intent.getAction().equals(Intent.ACTION_NEW_OUTGOING_CALL)) {//去电 14 System.out.println("去电"); 15 } else {//来电(存在以下三种情况) 16 TelephonyManager tm = (TelephonyManager) context.getSystemService(Service.TELEPHONY_SERVICE); 17 switch (tm.getCallState()) { 18 case TelephonyManager.CALL_STATE_IDLE: 19 System.out.println("挂断"); 20 break; 21 case TelephonyManager.CALL_STATE_OFFHOOK: 22 System.out.println("接听"); 23 break; 24 case TelephonyManager.CALL_STATE_RINGING: 25 System.out.println("响铃"); 26 break; 27 } 28 } 29 } 30 }
二、在清单文件中注册该广播，并加上相应的权限。
1 <manifest xmlns:android="http://schemas.android.com/apk/res/android" 2 package="com.example.phonereceiver" 3 android:versionCode="1" 4 android:versionName="1.0" > 5 6 <uses-sdk 7 android:minSdkVersion="8" 8 android:targetSdkVersion="15" /> 9 10 <uses-permission android:name="android.permission.READ_PHONE_STATE" /> 11 <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS" /> 12 13 <application 14 android:icon="@drawable/ic_launcher" 15 android:label="@string/app_name" 16 android:theme="@style/AppTheme" > 17 <receiver android:name=".PhoneReceiver" > 18 <intent-filter> 19 <action android:name="android.intent.action.PHONE_STATE" /> 20 <action android:name="android.intent.action.NEW_OUTGOING_CALL" /> 21 </intent-filter> 22 </receiver> 23 </application> 24 25 </manifest>
