读取目录时不显示文件

Question

我有两个mp3文件在一个目录中正在读取，但只有'.thumbnails'文件夹正在被记录。

这就是记录的内容

d/文件:路径:/storage/emulated/0/music

d/文件:大小:1

d/文件:文件名:。缩略图

  fun readFiles(){
        val path = Environment.getExternalStorageDirectory().path + "/Music"
        Log.d("Files", "Path: $path")
        val directory = File(path)
        val files = directory.listFiles()
        Log.d("Files", "Size: " + files.size)
        for (i in files.indices) {
            Log.d("Files", "FileName:" + files[i].name)
        }
    }

Answer 1

1-确保授予read_external_storage权限

fun readFiles() {
        val path = getAbsolutePath(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC));
        Log.d("Files", "Path: $path")
        val directory = File(path)
        val files = directory.listFiles()
        Log.d("Files", "Size: " + files.size)
        for (i in files.indices) {
            Log.d("Files", "FileName:" + files[i].name)
        }
    }

private fun getAbsolutePath(file: File?): String? {
    return if (file == null) "" else file.absolutePath
}

日志CAT:

2020-08-11 14:40:33.862 16137-16137/maa.app D/Files: Path: /storage/emulated/0/Music
2020-08-11 14:40:33.863 16137-16137/maa.app D/Files: Size: 2
2020-08-11 14:40:33.863 16137-16137/maa.app D/Files: FileName:10 Somebody Told Me.mp3
2020-08-11 14:40:33.863 16137-16137/maa.app D/Files: FileName:Musiclrc