how can I access files in the internal storage's root directory?

Question

My device has no SD card, but I can access the files of "Internal storage" in Windows explorer, in which there is a "tmp.txt".

The txt file was pasted via Windows explorer, now I want to read this file. My codes are:

    File sdcard = Environment.getExternalStorageDirectory();
    File file = new File(sdcard,"tmp.txt");

    StringBuilder text = new StringBuilder();
    try {
        InputStream in = new FileInputStream(file);
        ...
    }
    catch (IOException e) {
    }

But it's not working, it step to catch exception after new FileInputStream(file); , the debug information logs the file location actually is "/storage/emulated/0/tmp.txt" , so it couldn't find the file. Then I tried put the file in the Download directory using:

File fileDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
File file = new File(fileDir, "tmp.txt");

error log: exception e:

It's not working either, basically they are the same problem. Can I access files in this directory?

Answer 1

请阅读以下内容：developer.android.com/guide/topics/data/data-storage您没有读取存储的权限，您放置的权限是用于位置服务的。