Allow User To Select Path For Save File in Android

i think Android DirectoryChooser is help you for choose directory for file save.

Manifest

You need to declare the DirectoryChooserActivity and request the android.permission.WRITE_EXTERNAL_STORAGE permission.

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />...<application>    <activity android:name="net.rdrei.android.dirchooser.DirectoryChooserActivity" /></application>

Activity

To choose a directory, start the activity from your app logic:

 final Intent chooserIntent = new Intent(this, DirectoryChooserActivity.class);    final DirectoryChooserConfig config = DirectoryChooserConfig.builder()            .newDirectoryName("DirChooserSample")            .allowReadOnlyDirectory(true)            .allowNewDirectoryNameModification(true)            .build();    chooserIntent.putExtra(DirectoryChooserActivity.EXTRA_CONFIG, config);// REQUEST_DIRECTORY is a constant integer to identify the request, e.g. 0startActivityForResult(chooserIntent, REQUEST_DIRECTORY);

Handle the result in your onActivityResult method:

@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {    super.onActivityResult(requestCode, resultCode, data);    if (requestCode == REQUEST_DIRECTORY) {        if (resultCode == DirectoryChooserActivity.RESULT_CODE_DIR_SELECTED) {            handleDirectoryChoice(data                .getStringExtra(DirectoryChooserActivity.RESULT_SELECTED_DIR));        } else {            // Nothing selected        }    }}