MediaRecorder录音程序报错求助java.lang.RuntimeException: setAudioSource failed.

yanshan5543 2016-11-28 09:19:54

以下是代码，



  public void onCallStateChanged(int state, String incomingNumber) {

        switch (state){

            case CALL_STATE_IDLE://空闲状态

                //结束录音

                if (mediaRecorder != null) {

                    mediaRecorder.stop();

                    mediaRecorder.reset();   // You can reuse the object by going back to setAudioSource() step

                    mediaRecorder.release(); // Now the object cannot be reused

                    System.out.println("----成功关闭---");

                }

                break;

            case CALL_STATE_RINGING://来电状态

                System.out.println("----来来来来来来---");

                //准备一个录音机

                mediaRecorder = new MediaRecorder();

                mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);

                mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);

                mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

                mediaRecorder.setOutputFile("/mnt/sdcard/luyin.3gp");

                try {

                    mediaRecorder.prepare();

                    System.out.println("----准备好了---");

                } catch (IOException e) {

                    e.printStackTrace();

                }

                break;

            case CALL_STATE_OFFHOOK://接听状态

            // 开始录制

             mediaRecorder.start();   // Recording is now started

                break;



        }

报错如下：
11-28 07:59:05.447 8343-8343/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.sunmingmei.listener, PID: 8343
java.lang.RuntimeException: setAudioSource failed.
at android.media.MediaRecorder.setAudioSource(Native Method)
at com.example.sunmingmei.listener.phonyListener.onCallStateChanged(phonyListener.java:36)
at android.telephony.PhoneStateListener$1.handleMessage(PhoneStateListener.java:298)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

不是权限问题，加入的权限如下：
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
请大神不吝赐教，感谢感谢。