Android BroadcastReceiver之电话录音

TelephonyManager tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
tm.listen(new MyPhoneStateListener(), PhoneStateListener.LISTEN_CALL_STATE);

class MyPhoneStateListener extends PhoneStateListener{

//当电话状态改变时，此方法调用
@Override
public void onCallStateChanged(int state, String incomingNumber) {
// TODO Auto-generated method stub
super.onCallStateChanged(state, incomingNumber);
switch (state) {
case TelephonyManager.CALL_STATE_IDLE://空闲
if(recorder != null){
recorder.stop();
recorder.release();
}
break;
case TelephonyManager.CALL_STATE_OFFHOOK://摘机
if(recorder != null){
recorder.start();
}
break;
case TelephonyManager.CALL_STATE_RINGING://响铃
recorder = new MediaRecorder();
//设置声音来源
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
//设置音频文件格式
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setOutputFile("sdcard/haha.3gp");
//设置音频文件编码
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
try {
recorder.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
break;
}
}
}

<service android:name="com.cy.recorder.RecorderService" >
</service>
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission
4000
android:name="android.permission.RECORD_AUDIO" />

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

public class RecorderService extends Service {
private MediaRecorder recorder;
@Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}

@Override
public void onCreate() {
super.onCreate();
//获取电话管理器
TelephonyManager tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
//监听电话状态
tm.listen(new MyListener(), PhoneStateListener.LISTEN_CALL_STATE);
}

class MyListener extends PhoneStateListener{

//电话状态改变时回调
@Override
public void onCallStateChanged(int state, String incomingNumber) {
super.onCallStateChanged(state, incomingNumber);
//判断当前是什么状态
switch (state) {
case TelephonyManager.CALL_STATE_IDLE:
if(recorder != null){
System.out.println("停止录音");
//停止录音
recorder.stop();
//释放录音机占用的资源
recorder.release();
recorder = null;
}
break;
case TelephonyManager.CALL_STATE_RINGING:
if(recorder == null){
recorder = new MediaRecorder();
//设置音频来源
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
//设置输出格式
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setOutputFile("sdcard/voice.3gp");
//设置音频编码
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
try {
System.out.println("准备好");
recorder.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
if(recorder != null){
System.out.println("开始录音");
recorder.start();
}
break;

}
}

}
}