监听电话的呼叫状态

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="startservice1"
android:text="监听电话呼叫状态"
/>

</LinearLayout>

package com.njupt.phoneservice1;

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.main);
}

public void startservice1(View v){
Intent intent = new Intent(this,PhoneService1.class);
startService(intent);
}
@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;
}

}

package com.njupt.phoneservice1;

import java.io.File;
import java.text.SimpleDateFormat;

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

public class PhoneService1 extends Service {

private TelephonyManager tm;
private MyPhoneStateListener1 listener;
private MediaRecorder mr;

@Override
public void onCreate() {
super.onCreate();

tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
listener = new MyPhoneStateListener1();
tm.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);

}

private class MyPhoneStateListener1 extends PhoneStateListener {
public void onCallStateChanged(int state, String incomingNumber) {
switch (state) {
case TelephonyManager.CALL_STATE_IDLE:
System.out.println("闲置状态1");

if (mr != null) {
//					if(incomingNumber.equals("5556")||incomingNumber.equals("15555215556")){
mr.stop();
mr.reset();
mr.release();
mr = null;

//					}
}
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
System.out.println("接听状态1");
try {

mr = new MediaRecorder();
mr.setAudioSource(MediaRecorder.AudioSource.MIC);
mr.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mr.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

//						SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
//						String name = format.format(System.currentTimeMillis());
File file = new File(
Environment.getExternalStorageDirectory(),
System.currentTimeMillis()+ ".3gp");
mr.setOutputFile(file.getAbsolutePath());

mr.prepare();
mr.start();

} catch (Exception e) {
e.printStackTrace();
}
break;
case TelephonyManager.CALL_STATE_RINGING:
System.out.println("响铃状态1");
break;
default:
break;
}
};
}

@Override
public IBinder onBind(Intent intent) {

return null;
}

}

<uses-permission android:name="android.permission.READ_PHONE_STATE"/> //用来读取电话状态

<uses-permission android:name="android.permission.RECORD_AUDIO"/>//录音的相关权限
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>//以下两个是读写SDcard相应的权限
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

<service android:name="com.njupt.phoneservice1.PhoneService1"/>