打开失败：Android 10上的ENOENT（无此类文件或目录）

Question

我正在尝试从我的应用中读取CSV文件，该代码在下面的android 5.1上可以正常使用，但是在我的android 10手机上却无法使用。

这是在logcat上引发的异常：

   W/System.err: java.io.FileNotFoundException: /document/primary:RFS Site Project Related Tickets 
    Weekly Data as of 20200607.csv: open failed: ENOENT (No such file or directory)
    at libcore.io.IoBridge.open(IoBridge.java:496)
    at java.io.FileInputStream.<init>(FileInputStream.java:159)
    W/System.err:     at java.io.FileReader.<init>(FileReader.java:72)
    at com.example.noragdrive.MainActivity.openFileFromFilePicker(MainActivity.java:155)
    at com.example.noragdrive.MainActivity.onActivityResult(MainActivity.java:74)
    W/System.err:     at android.app.Activity.dispatchActivityResult(Activity.java:8292)
    at android.app.ActivityThread.deliverResults(ActivityThread.java:5090)
    at android.app.ActivityThread.handleSendResult(ActivityThread.java:5138)
    at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:51)
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2147)
    at android.os.Handler.dispatchMessage(Handler.java:107)
    at android.os.Looper.loop(Looper.java:237)
    at android.app.ActivityThread.main(ActivityThread.java:7814)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1075)
    Caused by: android.system.ErrnoException: open failed: ENOENT (No such file or directory)
    at libcore.io.Linux.open(Native Method)
    W/System.err:     at libcore.io.ForwardingOs.open(ForwardingOs.java:167)
    at libcore.io.BlockGuardOs.open(BlockGuardOs.java:252)
    at libcore.io.ForwardingOs.open(ForwardingOs.java:167)
    at android.app.ActivityThread$AndroidOs.open(ActivityThread.java:7691)
    at libcore.io.IoBridge.open(IoBridge.java:482)
    ... 17 more

我这里有个例外

CSVReader dataRead = new CSVReader(new FileReader(file));

这是文件选择器：

   Intent pickerIntent = mDriveServiceHelper.createFilePickerIntent();

   pickerIntent.addCategory(Intent.CATEGORY_OPENABLE);
   pickerIntent.setAction(Intent.ACTION_GET_CONTENT);
   pickerIntent.setType("*/*");
   // The result of the SAF Intent is handled in onActivityResult.
   startActivityForResult(pickerIntent, REQUEST_CODE_OPEN_DOCUMENT);