How to create intent activity with file pick dialog?

问题

More exactly, how to create activity and then how to use selected path to write to removable storage?

Like this, and this?

回答1:

First you need to create Custom Dialog for Hint. then call intent to open specific Folder. see below code.

 Uri selectedUri = Uri.parse(Environment.getExternalStorageDirectory() + "/myFolder/");
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(selectedUri, "resource/folder");

if (intent.resolveActivityInfo(getPackageManager(), 0) != null)
{
    startActivity(intent);
}
else
{
    // if you reach this place, it means there is no any file 
    // explorer app installed on your device
}

For custom Dialog Material Design Dialog Lib

来源：https://stackoverflow.com/questions/40575914/how-to-create-intent-activity-with-file-pick-dialog