本文實例講述了Android編程實現通話錄音功能的方法。分享給大家供大家參考，具體如下：
因受系統限制，只能錄自已麥的聲音，錄不到對方的聲音，可能需要改內核才能實現雙向錄音；
接通電話和掛斷電話時，震動一下；
使用廣播接收者實現自啟動；
服務代碼：
package com.eboy.phoneListener;import java.io.File;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.os.Vibrator;import android.telephony.PhoneStateListener;import android.telephony.TelephonyManager;import android.widget.Toast;public class phoneService extends Service { @Override public IBinder onBind(Intent arg0) { // TODO Auto-generated method stub return null; } @Override public void onCreate() { // TODO Auto-generated method stub super.onCreate(); TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE); telephonyManager.listen(new PhoneListener(), PhoneStateListener.LISTEN_CALL_STATE); } private final class PhoneListener extends PhoneStateListener{ private MediaRecorder mediaRecorder; private File file; private Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE); @Override public void onCallStateChanged(int state, String incomingNumber) { try { switch (state){ case TelephonyManager.CALL_STATE_RINGING: //來電 break; case TelephonyManager.CALL_STATE_OFFHOOK: //接通電話 file = new File(Environment.getExternalStorageDirectory(), incomingNumber + System.currentTimeMillis() + ".3gp"); mediaRecorder = new MediaRecorder(); mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); mediaRecorder.setOutputFile(file.getAbsolutePath()); mediaRecorder.prepare(); mediaRecorder.start(); Toast.makeText(getApplicationContext(), "電話已接通，開始錄音。", Toast.LENGTH_SHORT).show(); //震動一下 vibrator.vibrate(100); break; case TelephonyManager.CALL_STATE_IDLE: //掛斷電話 if (mediaRecorder != null){ mediaRecorder.stop(); mediaRecorder.release(); mediaRecorder = null; Toast.makeText(getApplicationContext(), "電話已掛斷，錄音停止。", Toast.LENGTH_SHORT).show(); //震動一下 vibrator.vibrate(100); } break; } }catch (Exception e) { e.printStackTrace(); } } }}通過廣播接收者實現自啟動，代碼：
package com.eboy.phoneListener;import android.content.Context;import android.content.Intent;public class BroadcastReceiver extends android.content.BroadcastReceiver { @Override public void onReceive(Context arg0, Intent arg1) { Intent service = new Intent(arg0, phoneService.class); arg0.startService(service); }}main.xml：
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.eboy.phoneListener" android:versionCode="1" android:versionName="1.0"> <uses-sdk android:minSdkVersion="7" android:targetSdkVersion="15" /> <application android:label="@string/app_name" android:icon="@drawable/ic_launcher" android:theme="@style/AppTheme"> <service android:name=".phoneService"></service> <receiver android:name=".BroadcastReceiver"> <intent-filter > <action android:name="android.intent.action.BOOT_COMPLETED"/> </intent-filter> </receiver> </application> <!-- 讀取電話狀態權限 --> <uses-permission android:name="android.permission.READ_PHONE_STATE"/> <!-- SD卡讀寫權限 --> <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <!-- 錄音權限 --> <uses-permission android:name="android.permission.RECORD_AUDIO"/> <!-- 震動權限 --> <uses-permission android:name="android.permission.VIBRATE"/></manifest>
更多關于Android相關內容感興趣的讀者可查看本站專題：《Android多媒體操作技巧匯總(音頻,視頻,錄音等)》、《Android開發入門與進階教程》、《Android視圖View技巧總結》、《Android編程之activity操作技巧總結》、《Android操作json格式數據技巧總結》、《Android文件操作技巧匯總》、《Android資源操作技巧匯總》及《Android控件用法總結》
希望本文所述對大家Android程序設計有所幫助。
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