Android 來去電自動錄音 (三)

 好了，捕捉到了去電過程當中各個狀態的轉變，那麼，如何通知給程序呢，我採用的方法是捕獲後立馬給系統發送廣播，而後程序進行廣播接受，接受後在處理錄音事件。要發送廣播，就要發送一個惟一的廣播，爲此，創建以下類，

 

package com.sdvdxl.outgoingcall;

import com.sdvdxl.phonerecorder.ReadLog;

import android.content.Context;
import android.util.Log;

public class OutgoingCallState {
    Context ctx;
    public OutgoingCallState(Context ctx) {
        this.ctx = ctx;
    }

    /**
     * 前臺呼叫狀態
     * @author sdvdxl
     *
     */
    public static final class ForeGroundCallState {
        public static final String DIALING =
                "com.sdvdxl.phonerecorder.FORE_GROUND_DIALING";
        public static final String ALERTING =
                "com.sdvdxl.phonerecorder.FORE_GROUND_ALERTING";
        public static final String ACTIVE =
                "com.sdvdxl.phonerecorder.FORE_GROUND_ACTIVE";
        public static final String IDLE =
                "com.sdvdxl.phonerecorder.FORE_GROUND_IDLE";
        public static final String DISCONNECTED =
                "com.sdvdxl.phonerecorder.FORE_GROUND_DISCONNECTED";
    }

    /**
     * 開始監聽呼出狀態的轉變，
     * 並在對應狀態發送廣播
     */
    public void startListen() {
        new ReadLog(ctx).start();
        Log.d("Recorder", "開始監聽呼出狀態的轉變，並在對應狀態發送廣播");
    }

}

程序須要讀取系統日誌權限

<uses-permission android:name="android.permission.READ_LOGS"/>

而後，在讀取日誌的類中檢測到去電各個狀態的地方發送一個廣播，那麼，讀取日誌的完整代碼以下 
 

package com.sdvdxl.phonerecorder;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import com.sdvdxl.outgoingcall.OutgoingCallState;

import android.content.Context;
import android.content.Intent;
import android.util.Log;

/**
 *
 * @author mrloong
 *  找到 日誌中的
 *  onPhoneStateChanged: mForegroundCall.getState() 這個是前臺呼叫狀態
 *  mBackgroundCall.getState() 後臺電話
 *  若 是 DIALING 則是正在撥號，等待創建鏈接，但對方尚未響鈴，
 *  ALERTING 呼叫成功，即對方正在響鈴，
 *  如果 ACTIVE 則已經接通
 *  如果 DISCONNECTED 則本號碼呼叫已經掛斷
 *  如果 IDLE 則是處於 空閒狀態
 *
 */
public class ReadLog extends Thread {
    private Context ctx;
    private int logCount;

    private static final String TAG = "LogInfo OutGoing Call";

    /**
     *  先後臺電話
     * @author sdvdxl
     *
     */
    private static class CallViewState {
        public static final String FORE_GROUND_CALL_STATE = "mForeground";
    }

    /**
     * 呼叫狀態
     * @author sdvdxl
     *
     */
    private static class CallState {
        public static final String DIALING = "DIALING";
        public static final String ALERTING = "ALERTING";
        public static final String ACTIVE = "ACTIVE";
        public static final String IDLE = "IDLE";
        public static final String DISCONNECTED = "DISCONNECTED";
    }

    public ReadLog(Context ctx) {
        this.ctx = ctx;
    }

    /**
     * 讀取Log流
     * 取得呼出狀態的log
     * 從而獲得轉換狀態
     */
    @Override
    public void run() {
        Log.d(TAG, "開始讀取日誌記錄");

        String[] catchParams = {"logcat", "InCallScreen *:s"};
        String[] clearParams = {"logcat", "-c"};

        try {
            Process process=Runtime.getRuntime().exec(catchParams);
            InputStream is = process.getInputStream();
            BufferedReader reader = new BufferedReader(new InputStreamReader(is));

            String line = null;
            while ((line=reader.readLine())!=null) {
                logCount++;
                //輸出全部
            Log.v(TAG, line);

                //日誌超過512條就清理
                if (logCount>512) {
                    //清理日誌
                    Runtime.getRuntime().exec(clearParams)
                        .destroy();//銷燬進程，釋放資源
                    logCount = 0;
                    Log.v(TAG, "-----------清理日誌---------------");
                }

                /*---------------------------------前臺呼叫-----------------------*/
                //空閒
                if (line.contains(ReadLog.CallViewState.FORE_GROUND_CALL_STATE)
                        && line.contains(ReadLog.CallState.IDLE)) {
                    Log.d(TAG, ReadLog.CallState.IDLE);
                }

                //正在撥號，等待創建鏈接，即已撥號，但對方尚未響鈴，
                if (line.contains(ReadLog.CallViewState.FORE_GROUND_CALL_STATE)
                        && line.contains(ReadLog.CallState.DIALING)) {
                    //發送廣播
                    Intent dialingIntent = new Intent();
                    dialingIntent.setAction(OutgoingCallState.ForeGroundCallState.DIALING);
                    ctx.sendBroadcast(dialingIntent);

                    Log.d(TAG, ReadLog.CallState.DIALING);
                }

                //呼叫對方 正在響鈴
                if (line.contains(ReadLog.CallViewState.FORE_GROUND_CALL_STATE)
                        && line.contains(ReadLog.CallState.ALERTING)) {
                    //發送廣播
                    Intent dialingIntent = new Intent();
                    dialingIntent.setAction(OutgoingCallState.ForeGroundCallState.ALERTING);
                    ctx.sendBroadcast(dialingIntent);

                    Log.d(TAG, ReadLog.CallState.ALERTING);
                }

                //已接通，通話創建
                if (line.contains(ReadLog.CallViewState.FORE_GROUND_CALL_STATE)
                        && line.contains(ReadLog.CallState.ACTIVE)) {
                    //發送廣播
                    Intent dialingIntent = new Intent();
                    dialingIntent.setAction(OutgoingCallState.ForeGroundCallState.ACTIVE);
                    ctx.sendBroadcast(dialingIntent);

                    Log.d(TAG, ReadLog.CallState.ACTIVE);
                }

                //斷開鏈接，即掛機
                if (line.contains(ReadLog.CallViewState.FORE_GROUND_CALL_STATE)
                        && line.contains(ReadLog.CallState.DISCONNECTED)) {
                    //發送廣播
                    Intent dialingIntent = new Intent();
                    dialingIntent.setAction(OutgoingCallState.ForeGroundCallState.DISCONNECTED);
                    ctx.sendBroadcast(dialingIntent);

                    Log.d(TAG, ReadLog.CallState.DISCONNECTED);
                }

            } //END while

        } catch (IOException e) {
            e.printStackTrace();
        } //END try-catch
    } //END run
} //END class ReadLog

發送了廣播，那麼就要有接受者，定義接收者以下
（關於錄音機的代碼能夠先忽略）

package com.sdvdxl.phonerecorder;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

import com.sdvdxl.outgoingcall.OutgoingCallState;

public class OutgoingCallReciver extends BroadcastReceiver {
    static final String TAG = "Recorder";
    private MyRecorder recorder;

    public OutgoingCallReciver() {
        recorder = new MyRecorder();
    }

    public  OutgoingCallReciver (MyRecorder recorder) {
        this.recorder = recorder;
    }

    @Override
    public void onReceive(Context ctx, Intent intent) {
        String phoneState = intent.getAction();

        if (phoneState.equals(Intent.ACTION_NEW_OUTGOING_CALL)) {
            String phoneNum = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);//撥出號碼
            recorder.setPhoneNumber(phoneNum);
            recorder.setIsCommingNumber(false);
            Log.d(TAG, "設置爲去電狀態");
            Log.d(TAG, "去電狀態 呼叫：" + phoneNum);
        }

        if (phoneState.equals(OutgoingCallState.ForeGroundCallState.DIALING)) {
            Log.d(TAG, "正在撥號...");
        }

        if (phoneState.equals(OutgoingCallState.ForeGroundCallState.ALERTING)) {
            Log.d(TAG, "正在呼叫...");
        }

        if (phoneState.equals(OutgoingCallState.ForeGroundCallState.ACTIVE)) {
            if (!recorder.isCommingNumber() && !recorder.isStarted()) {
                Log.d(TAG, "去電已接通 啓動錄音機");
                recorder.start();

            }
        }

        if (phoneState.equals(OutgoingCallState.ForeGroundCallState.DISCONNECTED)) {
            if (!recorder.isCommingNumber() && recorder.isStarted()) {
                Log.d(TAG, "已掛斷 關閉錄音機");
                recorder.stop();
            }
        }
    }

}

其中有這麼一段代碼

String phoneState = intent.getAction();

        if (phoneState.equals(Intent.ACTION_NEW_OUTGOING_CALL)) {
            String phoneNum = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);//撥出號碼
            recorder.setPhoneNumber(phoneNum);
            recorder.setIsCommingNumber(false);
            Log.d(TAG, "設置爲去電狀態");
            Log.d(TAG, "去電狀態 呼叫：" + phoneNum);
        }

這裏是接收系統發出的廣播，用於接收去電廣播。這樣，就得到了去電狀態。

三、有了以上主要代碼，能夠說，來去電監聽功能算是完成了，下面建立一個service來運行監聽
 

package com.sdvdxl.service;

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

import com.sdvdxl.outgoingcall.OutgoingCallState;
import com.sdvdxl.phonerecorder.MyRecorder;
import com.sdvdxl.phonerecorder.OutgoingCallReciver;
import com.sdvdxl.phonerecorder.TelListener;

public class PhoneCallStateService extends Service {
    private OutgoingCallState outgoingCallState;
    private OutgoingCallReciver outgoingCallReciver;
    private MyRecorder recorder;

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

        //------如下應放在onStartCommand中，但2.3.5如下版本不會因service從新啓動而從新調用--------
        //監聽電話狀態，若是是打入且接聽 或者 打出 則開始自動錄音
        //通話結束，保存文件到外部存儲器上
        Log.d("Recorder", "正在監聽中...");
        recorder = new MyRecorder();
        outgoingCallState = new OutgoingCallState(this);
        outgoingCallReciver = new OutgoingCallReciver(recorder);
        outgoingCallState.startListen();
        Toast.makeText(this, "服務已啓動", Toast.LENGTH_LONG).show();

        //去電
        IntentFilter outgoingCallFilter = new IntentFilter();
        outgoingCallFilter.addAction(OutgoingCallState.ForeGroundCallState.IDLE);
        outgoingCallFilter.addAction(OutgoingCallState.ForeGroundCallState.DIALING);
        outgoingCallFilter.addAction(OutgoingCallState.ForeGroundCallState.ALERTING);
        outgoingCallFilter.addAction(OutgoingCallState.ForeGroundCallState.ACTIVE);
        outgoingCallFilter.addAction(OutgoingCallState.ForeGroundCallState.DISCONNECTED);

        outgoingCallFilter.addAction("android.intent.action.PHONE_STATE");
        outgoingCallFilter.addAction("android.intent.action.NEW_OUTGOING_CALL");

        //註冊接收者
        registerReceiver(outgoingCallReciver, outgoingCallFilter);

        //來電
        TelephonyManager telmgr = (TelephonyManager)getSystemService(
                Context.TELEPHONY_SERVICE);
        telmgr.listen(new TelListener(recorder), PhoneStateListener.LISTEN_CALL_STATE);


    }

    @Override
    public IBinder onBind(Intent intent) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        unregisterReceiver(outgoingCallReciver);
        Toast.makeText(
                this, "已關閉電話監聽服務", Toast.LENGTH_LONG)
                .show();
        Log.d("Recorder", "已關閉電話監聽服務");
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {

        return START_STICKY;
    }

}

註冊如下service
 

<service android:name="com.sdvdxl.service.PhoneCallStateService" />

到此爲止，來去電狀態的監聽功能算是完成了，剩下一個錄音機，附上錄音機代碼以下
 

package com.sdvdxl.phonerecorder;

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import android.media.MediaRecorder;
import android.os.Environment;
import android.util.Log;

public class MyRecorder {
    private String phoneNumber;
    private MediaRecorder mrecorder;
    private boolean started = false; //錄音機是否已經啓動
    private boolean isCommingNumber = false;//是不是來電
    private String TAG = "Recorder";


    public MyRecorder(String phoneNumber) {
        this.setPhoneNumber(phoneNumber);
    }

    public MyRecorder() {
    }

    public void start() {
        started = true;
        mrecorder = new MediaRecorder();

        File recordPath = new File(
                Environment.getExternalStorageDirectory()
                , "/My record");
        if (!recordPath.exists()) {
            recordPath.mkdirs();
            Log.d("recorder", "建立目錄");
        }

        String callDir = "呼出";
        if (isCommingNumber) {
            callDir = "呼入";
        }
        String fileName = callDir + "-" + phoneNumber + "-"
                + new SimpleDateFormat("yy-MM-dd_HH-mm-ss")
                    .format(new Date(System.currentTimeMillis())) + ".mp3";//實際是3gp
        File recordName = new File(recordPath, fileName);

        try {
            recordName.createNewFile();
            Log.d("recorder", "建立文件" + recordName.getName());
        } catch (IOException e) {
            e.printStackTrace();
        }

        mrecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
        mrecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
        mrecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);

        mrecorder.setOutputFile(recordName.getAbsolutePath());

        try {
            mrecorder.prepare();
        } catch (IllegalStateException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        mrecorder.start();
        started = true;
        Log.d(TAG , "錄音開始");
    }

    public void stop() {
        try {
            if (mrecorder!=null) {
                mrecorder.stop();
                mrecorder.release();
                mrecorder = null;
            }
            started = false;
        } catch (IllegalStateException e) {
            e.printStackTrace();
        }


        Log.d(TAG , "錄音結束");
    }

    public void pause() {

    }

    public String getPhoneNumber() {
        return phoneNumber;
    }

    public void setPhoneNumber(String phoneNumber) {
        this.phoneNumber = phoneNumber;
    }

    public boolean isStarted() {
        return started;
    }

    public void setStarted(boolean hasStarted) {
        this.started = hasStarted;
    }

    public boolean isCommingNumber() {
        return isCommingNumber;
    }

    public void setIsCommingNumber(boolean isCommingNumber) {
        this.isCommingNumber = isCommingNumber;
    }

}

寫到這兒，算是完成了來去電自動錄音的全部功能，若有不懂，或者更好的建議歡迎評論。

另附 工程源代碼