Android broadcast access to monitor phone status (status of the phone, interception) _android

First, let's understand the mechanism of the listener.

There are two types of event-handling mechanisms for Android: listening and callbacks.

A monitoring-based event handling

Mainly involved in three types of objects: EventSource (event source), event (events), EventListener (event listener)

The flow chart of the listening mechanism handling events is as follows (delegate: delegation):

1: Need to add permissions in the Androidmanifest.xml list

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

2: Register the broadcast to notice the level of the event (level -1000~1000 in Android)

<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>

Detailed configuration See 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= "/>" <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: Write the implementation of the broadcast class here needs to inherit Broadcastreceiver implementation OnReceive () method

The source code for the program is as follows:

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 Stati
C Boolean mincomingflag = false;
private static String mincomingnumber = null; @Override public void OnReceive (context context, Intent Intent) {//If the call is (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 {//if the caller 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"); }}/* @Override public void onreceive (context context, Intent Intent) {String number = Getresultdata (); if ("5556". Equal s (number)) {setresultdata (null);//Hang up}else{number = "12593" + number;//Others, add area code setresultdata (number);} */
}

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