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這期內容當中小編將會給大家帶來有關Android應用中怎么實現一個通話錄音功能，文章內容豐富且以專業的角度為大家分析和敘述，閱讀完這篇文章希望大家可以有所收獲。
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>上述就是小編為大家分享的Android應用中怎么實現一個通話錄音功能了，如果剛好有類似的疑惑，不妨參照上述分析進行理解。如果想知道更多相關知識，歡迎關注億速云行業資訊頻道。
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