如何从MediaStore.File和MediaStore.File.FileColumn获取数据 [英] How to get data from MediaStore.File and MediaStore.File.FileColumn

问题描述

我正在尝试获取所有包含音频文件的文件名，我已经使用Mediastore获取了媒体存储音频，专辑，播放列表和音频数据，但是我如何获取文件或文件夹标题，其中包含音频文件.这是我尝试过的代码，但由于我无法设置External_Content_uri，所以代码不正确. 这是我尝试过的代码.

I am trying to get all the file name having audio files in it I have used Mediastore to get the mediastore audio,album,playlist and audio DATA also but how I can get the file or folder titles which contains the audio file .Here is the code that I have tried but it is not correct as I am not able to set the External_Content_uri. This is the code I have tried.

  private void External() {
    try {
        String[] proj = {MediaStore.Files.FileColumns.TITLE,
                MediaStore.Files.FileColumns._ID,
                MediaStore.Files.FileColumns.PARENT,
                MediaStore.Files.FileColumns.DATA
        };// Can include more data for more details and check it.

        String selection =MediaStore.Files.FileColumns.MEDIA_TYPE+"=?";

        String[] selectionArgs = {"MediaStore.Files.FileColumns.MEDIA_TYPE_AUDIO"};

        String sortOrder = MediaStore.Audio.Media.TITLE + " ASC";

        Cursor audioCursor = getContentResolver().query(MediaStore.Files.getContentUri("\"external\""), proj, selection, selectionArgs, sortOrder);

        if (audioCursor != null) {
            if (audioCursor.moveToFirst()) {
                do {
                    int filetitle = audioCursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.TITLE);
                    int file_id = audioCursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns._ID);
                    int fileparent = audioCursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.PARENT);
                    int filedata = audioCursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.DATA);
                    Mediafileinfo info = new Mediafileinfo();
                    info.setData(new File(new File(audioCursor.getString(filedata)).getParent()).getName());
                    info.setTitle(audioCursor.getString(filetitle));
                    info.set_id(audioCursor.getString(file_id));
                    info.setParent(audioCursor.getString(fileparent));
                   // info.setData(audioCursor.getString(filedata));
                    audioList.add(info);
                } while (audioCursor.moveToNext());
            }
        }
        assert audioCursor != null;
        audioCursor.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}

我尝试了此和此示例，但我无法找到解决方案.

I tried this and this example but I am not able to get the solution.

推荐答案

写一个新的答案，因为您想要的只是音频文件的文件夹名称.

Writing a fresh answer, since all you want is the folder names of the audio files.

因此，此处最好使用的是MediaStore.Audio.Media而不是MediaStore.File.使用以下音频文件路径获取文件夹名称.

So the best thing to use here is MediaStore.Audio.Media instead of using MediaStore.File. Get the folder names using the below on the audio file path.

new File(new File(audioCursor.getString(filedata)).getParent()).getName()

---

private void External() {
try {
    Uri externalUri= MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;

    projection=new String[]{MediaStore.Audio.Media._ID,
            MediaStore.Audio.Media.TITLE,
            MediaStore.Audio.Media.DATA,;

    String selection =null;

    String[] selectionArgs = null;

    String sortOrder = MediaStore.Audio.Media.TITLE + " ASC";

    Cursor audioCursor = getContentResolver().query(externalUri, proj, selection, selectionArgs, sortOrder);

    if (audioCursor != null) {
        if (audioCursor.moveToFirst()) {
            do {
                int filetitle = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.TITLE);
                int file_id = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media._ID);
                int filePath = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA);
                Mediafileinfo info = new Mediafileinfo();
                info.setData(new File(new File(audioCursor.getString(filedata)).getParent()).getName());
                info.setTitle(audioCursor.getString(filetitle));
                info.set_id(audioCursor.getString(file_id));
                audioList.add(info);
            } while (audioCursor.moveToNext());
        }
    }
    assert audioCursor != null;
    audioCursor.close();
} catch (Exception e) {
    e.printStackTrace();
}
}

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