本文实例讲述了Android编程实现通话录音功能的方法。分享给大家供大家参考，具体如下：
因受系统限制，只能录自已麦的声音，录不到对方的声音，可能需要改内核才能实现双向录音；
接通电话和挂断电话时，震动一下；
使用广播接收者实现自启动；
服务代码：
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: //来电 break; case TelephonyManager.CALL_STATE_OFFHOOK: //接通电话 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(), "电话已接通，开始录音。", Toast.LENGTH_SHORT).show(); //震动一下 vibrator.vibrate(100); break; case TelephonyManager.CALL_STATE_IDLE: //挂断电话 if (mediaRecorder != null){ mediaRecorder.stop(); mediaRecorder.release(); mediaRecorder = null; Toast.makeText(getApplicationContext(), "电话已挂断，录音停止。", Toast.LENGTH_SHORT).show(); //震动一下 vibrator.vibrate(100); } break; } }catch (Exception e) { e.printStackTrace(); } } } }
通过广播接收者实现自启动，代码：
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> <!-- 读取电话状态权限 --> <uses-permission android:name="android.permission.READ_PHONE_STATE"/> <!-- SD卡读写权限 --> <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <!-- 录音权限 --> <uses-permission android:name="android.permission.RECORD_AUDIO"/> <!-- 震动权限 --> <uses-permission android:name="android.permission.VIBRATE"/> </manifest>
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希望本文所述对大家Android程序设计有所帮助。