【学习笔记】通过服务监听电话的呼叫状态

启动电话监听服务

启动服务StartService();监听电话呼叫状态

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.phonereceiver"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission
android:name="android.permission.READ_PHONE_STATE"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.phonereceiver.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".Phoneservice"></service>
</application>
</manifest>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="启动电话的监听服务"
android:onClick="startService" />

</LinearLayout>

package com.example.phonereceiver;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

public void startService(View v){
Intent intent = new Intent(this,Phoneservice.class);
startService(intent);
}
}

package com.example.phonereceiver;

import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.IBinder;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;

public class Phoneservice extends Service {
//电话的服务
private TelephonyManager manager;
private MyPhoneStateListener listener;
//服务被创建的时候调用
@Override
public void onCreate() {
super.onCreate();
manager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
listener = new MyPhoneStateListener();
//监听电话的呼叫状态
manager.listen(listener, MyPhoneStateListener.LISTEN_CALL_STATE);
}

private final class MyPhoneStateListener extends PhoneStateListener{
@Override
public void onCallStateChanged(int state, String incomingNumber) {
// TODO Auto-generated method stub
super.onCallStateChanged(state, incomingNumber);
Log.i("i","电话来字："+incomingNumber);
switch (state) {
case TelephonyManager.CALL_STATE_IDLE://闲置状态
Log.i("i","闲置状态");
break;
case TelephonyManager.CALL_STATE_RINGING://响铃状态
Log.i("i","响铃状态");
break;
case TelephonyManager.CALL_STATE_OFFHOOK://接听状态
Log.i("i","接听状态");
break;
default:
break;
}
}
}
@Override
public IBinder onBind(Intent intent) {

return null;
}

}

接电话就录音的配置

package com.example.phonereceiver;

import java.io.File;
import java.io.IOException;

import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.Environment;
import android.os.IBinder;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.util.Log;
import android.media.MediaRecorder;

public class Phoneservice extends Service {
//电话的服务
private TelephonyManager manager;
private MyPhoneStateListener listener;

private MediaRecorder recorder = null;
//服务被创建的时候调用
@Override
public void onCreate() {
super.onCreate();
manager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
listener = new MyPhoneStateListener();
//监听电话的呼叫状态
manager.listen(listener, MyPhoneStateListener.LISTEN_CALL_STATE);
}

private final class MyPhoneStateListener extends PhoneStateListener{
@Override
public void onCallStateChanged(int state, String incomingNumber) {
// TODO Auto-generated method stub
super.onCallStateChanged(state, incomingNumber);
Log.i("i","电话来字："+incomingNumber);
switch (state) {
case TelephonyManager.CALL_STATE_IDLE://闲置状态
Log.i("i","闲置状态");
if(recorder!=null){
recorder.stop();
recorder.release();
recorder=null;
//默认只能录自己MIC的声音，不能录对方的声音，需要对底层进行修改JNI调用C
}
break;
case TelephonyManager.CALL_STATE_RINGING://响铃状态
Log.i("i","响铃状态");
try {
recorder = recorder = new MediaRecorder();

//声音来源麦克
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
//内容输出格式
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
//音频编码方式
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
//设置采样频率，要根据自己输出的格式来设置音频采样率
recorder.setAudioSamplingRate(177*144);
//指定文件输出路径
File audioFile = new File(Environment.getExternalStorageDirectory(),System.currentTimeMillis()+".3gp");
recorder.setOutputFile(audioFile.getAbsolutePath());
//预期准备
recorder.prepare();
recorder.start(); //开始录音
} catch(Exception e) {
e.printStackTrace();
}

break;
case TelephonyManager.CALL_STATE_OFFHOOK://接听状态
Log.i("i","接听状态");
break;
default:
break;
}
}
}
@Override
public IBinder onBind(Intent intent) {

return null;
}

}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.phonereceiver"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>

<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.phonereceiver.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".Phoneservice"></service>
</application>
</manifest>