android - 无法打开.mp3录音java.io.FileNotFoundException

Question

我的项目中有一个功能，该功能允许用户记录和播放本地存储的音频备忘录。如果我为文件设置了静态名称，则一切正常。如果我尝试设置动态名称(例如System.currentTimeMillis())，则在尝试播放该文件时找不到该文件。这是我的代码:

录音位:

    public void startRecording() {

    recorder = new MediaRecorder();
    recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    recorder.setOutputFormat(output_formats[currentFormat]);
    // recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    recorder.setOutputFile(getFileRecording());
    recorder.setOnErrorListener(errorListener);
    recorder.setOnInfoListener(infoListener);

    try {
        recorder.prepare();
        recorder.start();
        isRecording = true;
        showRecordingUI();

        handler.post(updateVisualizer);

    } catch (IllegalStateException e) {
        Log.e("Recording ::::: ", e.getMessage());
        e.printStackTrace();
    } catch (IOException e) {
        Log.e("Recording :: ", e.getMessage());
        e.printStackTrace();
    }

    BuildDev.logDebug("WE ARE RECORDING!!!");


}

并设置文件名(静态名称):

    private String getFileRecording() {
    recordingFilepath = Environment.getExternalStorageDirectory().getPath();
    File file = new File(recordingFilepath, AUDIO_RECORDER_FOLDER);

    if (!file.exists()) {
        file.mkdirs();
    }

    String fileName = "12345"

    return (file.getAbsolutePath() + "/" + fileName + file_exts[currentFormat]);
}

这是我调试时得到的路径:

/storage/emulated/0/everreach_audio_notes//12345.mp3

和非动态选项似乎不起作用:

    private String getFileRecording() {
    recordingFilepath = Environment.getExternalStorageDirectory().getPath();
    File file = new File(recordingFilepath, AUDIO_RECORDER_FOLDER);

    if (!file.exists()) {
        file.mkdirs();
    }

    String fileName =  String.valueOf(System.currentTimeMillis();

    return (file.getAbsolutePath() + "/" + "/" + fileName + file_exts[currentFormat]);
}

这给了我以下路径:

/storage/emulated/0/everreach_audio_notes//1476878040697.mp3

当我尝试使用动态名称播放音频文件时，出现以下错误:

W/System.err: java.io.FileNotFoundException: /storage/emulated/0/everreach_audio_notes/11476880948244.mp3: open failed: ENOENT (No such file or directory)
at java.io.FileInputStream.<init>(FileInputStream.java:76)
at java.io.FileInputStream.<init>(FileInputStream.java:103)
call_info.RecordingsListAdapter.startPlaying(RecordingsListAdapter.java:190)
call_info.RecordingsListAdapter.access$500(RecordingsListAdapter.java:36)
call_info.RecordingsListAdapter$2.onClick(RecordingsListAdapter.java:125)
at android.view.View.performClick(View.java:4861)
at android.view.View$PerformClick.run(View.java:19980)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:211)
at android.app.ActivityThread.main(ActivityThread.java:5373)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1020)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:815)
Caused by: android.system.ErrnoException: open failed: ENOENT (No such file or directory)
at libcore.io.Posix.open(Native Method)
at libcore.io.BlockGuardOs.open(BlockGuardOs.java:186)
at libcore.io.IoBridge.open(IoBridge.java:451)

Answer 1

更换

  return (file.getAbsolutePath() + "/" + "/" + fileName + file_exts[currentFormat]);

通过

  return (file.getAbsolutePath() + "/" + fileName + file_exts[currentFormat]);