Question

我已经启动了Media Recorder，设置了音频源，输出格式，输出文件和音频编码器。之后，我使用了mediaRecorder.prepare（）方法，并进行了一次尝试，然后启动了它。我还在清单中添加了WRITE_EXTERNAL_STORAGE和RECORD_AUDIO的权限。

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.RECORD_AUDIO" />

检查权限会返回true，因此创建活动后便会授予权限，所以我知道这不是问题

pathSave = Environment.getExternalStorageDirectory().getAbsolutePath();
    pathSave += "/" + UUID.randomUUID() + ".3gp";
    Log.d("path", pathSave);

    setupMediaRecorder();
    try {
        mediaRecorder.prepare();
    } catch (IOException e) {
        e.printStackTrace();
    }

    mediaRecorder.start();


private void setupMediaRecorder() {
    mediaRecorder = new MediaRecorder();
    mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    mediaRecorder.setOutputFile(pathSave);
    mediaRecorder.setAudioEncoder(MediaRecorder.OutputFormat.AMR_NB);

}

这是错误日志：

09-17 08:46:18.813 4178-4178/? E/AndroidRuntime: FATAL EXCEPTION: main
                                             Process: maginate.net.thebestrapper, PID: 4178
                                             java.lang.IllegalStateException
                                                 at android.media.MediaRecorder._start(Native Method)
                                                 at android.media.MediaRecorder.start(MediaRecorder.java:946)
                                                 at maginate.net.thebestrapper.session.RecordActivity$1.onClick(RecordActivity.java:185)
                                                 at android.view.View.performClick(View.java:5697)
                                                 at android.view.View$PerformClick.run(View.java:22526)
                                                 at android.os.Handler.handleCallback(Handler.java:739)
                                                 at android.os.Handler.dispatchMessage(Handler.java:95)
                                                 at android.os.Looper.loop(Looper.java:158)
                                                 at android.app.ActivityThread.main(ActivityThread.java:7224)
                                                 at java.lang.reflect.Method.invoke(Native Method)
                                                 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
                                                 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

Media Recorder无法启动。在所有设备上崩溃

0 个答案: