我如何处理来自 MediaRecorder 的 setOutputFile 以获取 Uri android 10

问题描述

我需要录制语音这个函数 setoutputFile() 需要一个输出文件的路径并且需要处理我的 Uri 不是路径的作用域存储我该怎么办？

<select>
  <option value="Option1">Option1</option>
  <option value="Option2">Option2</option>
  <option value="Option3">Option3</option>
  <option value="Option4">Option4</option>
</select>

这一行应该改变

public void startRecording() {
    recorder = new MediaRecorder();
    recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    recorder.setoutputFormat(output_formats[currentFormat]);
    recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    recordingName = getFilename();
    recorder.setoutputFile(recordingName);
    recorder.setonErrorListener(errorListener);
    recorder.setonInfoListener(infoListener);

    try {
        recorder.prepare();
        recorder.start();
        handler.post(updateVisualizer);
    } catch (IllegalStateException | IOException e) {
        e.printstacktrace();
    }
}

解决方法

我为我的应用使用了公共文件夹 像这个例子 https://github.com/CWMChapman/Audio_Memos

public void startRecording(Button b) {
        // state = mounted or unmounted
        String state = Environment.getExternalStorageState();
        Log.d(TAG,state);

        Context ctx = this.getApplicationContext();
        File audioDir = new File(ctx.getExternalFilesDir(Environment.DIRECTORY_DOCUMENTS),"AudioMemos");
        audioDir.mkdirs();
        String audioDirPath = audioDir.getAbsolutePath();
        Log.d(TAG,"Recording file location: " + audioDirPath);

        Date currentTime = Calendar.getInstance().getTime(); // current time
        String curTimeStr = currentTime.toString().replace(" ","_");

        File recordingFile = new File(audioDirPath + "/" + curTimeStr + ".m4a");
        Log.d(TAG,"Created file: " + recordingFile.getName());

//        try {
//        } catch (IOException e) {
//            Log.e(TAG,"external storage access error");
//            return;
//        }

        mr = new MediaRecorder();
        mr.setAudioSource(MediaRecorder.AudioSource.MIC);
        mr.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
        mr.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
        mr.setOutputFile(recordingFile.getAbsolutePath());

        try {
            mr.prepare();
        } catch (IOException e) {
            Log.e(TAG,"prepare() failed");
        }
        mr.start();
    }