Android编程实现通话录音功能的方法

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。