首先我们来理解下监听器的机制。

Android的事件处理机制有两种：监听和回调。

A基于监听的事件处理

主要涉及三类对象：EventSource（事件源），Event（事件），EventListener（事件监听器）

监听机制处理事件的流程图如下（委派式：Delegation）：

1：需要在AndroidManifest.xml清单中添加权限

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

2：注册广播 要注意事件的级别 （android中的级别-1000~1000）

<receiver android:name=".PhoneBroadcastReceiver"> <intent-filter android:priority="1000"> <action android:name="android.intent.action.NEW_OUTGOING_CALL"/> <action android:name="android.intent.action.PHONE_STATE"/> </intent-filter> </receiver>

详细配置请看 AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.zyw.broadcastsendsms" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="15" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:name=".SendSMS" android:label="@string/title_activity_send_sms" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <receiver android:name=".PhoneBroadcastReceiver"> <intent-filter android:priority="1000"> <action android:name="android.intent.action.NEW_OUTGOING_CALL"/> <action android:name="android.intent.action.PHONE_STATE"/> </intent-filter> </receiver> </application> <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/> <uses-permission android:name="android.permission.READ_PHONE_STATE" /> </manifest>

3：编写广播的实现类 这里需要继承BroadcastReceiver 实现onReceive()方法

程序的源代码如下：

package com.zyw.broadcastsendsms; import android.app.Service; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.telephony.TelephonyManager; import android.util.Log; public class PhoneBroadcastReceiver extends BroadcastReceiver { private static final String TAG = "message"; private static boolean mIncomingFlag = false; private static String mIncomingNumber = null; @Override public void onReceive(Context context, Intent intent) { // 如果是拨打电话 if (intent.getAction().equals(Intent.ACTION_NEW_OUTGOING_CALL)) { mIncomingFlag = false; String phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER); Log.i(TAG, "call OUT:" + phoneNumber); } else { // 如果是来电 TelephonyManager tManager = (TelephonyManager) context .getSystemService(Service.TELEPHONY_SERVICE); switch (tManager.getCallState()) { case TelephonyManager.CALL_STATE_RINGING: mIncomingNumber = intent.getStringExtra("incoming_number"); Log.i(TAG, "RINGING :" + mIncomingNumber); break; case TelephonyManager.CALL_STATE_OFFHOOK: if (mIncomingFlag) { Log.i(TAG, "incoming ACCEPT :" + mIncomingNumber); } break; case TelephonyManager.CALL_STATE_IDLE: if (mIncomingFlag) { Log.i(TAG, "incoming IDLE"); } break; } } } /*@Override public void onReceive(Context context, Intent intent) { String number = getResultData(); if("5556".equals(number)){ setResultData(null);//挂断 }else{ number = "12593"+ number; //其他，则加区号 setResultData(number); } }*/ }

以上内容给大家介绍了Android广播接实现监听电话状态（电话的状态，拦截）的相关知识，希望对大家有所帮助！