问题
Hi there is a way to select folder where user want to save file in android . I check out http://code.google.com/p/android-file-dialog/
it has functionality to select file but i want to select folder , please provide me usable link or examples.
回答1:
I used the same source in my app (pretty sure), and there is a block of code:
protected void onListItemClick(ListView l, View v, int position, long id) {
if (file.isDirectory()) {
selectButton.setEnabled(false);
if (file.canRead()) {
lastPositions.put(currentPath, position);
getDir(path.get(position));
} else {
new AlertDialog.Builder(this)
.setIcon(R.drawable.icon)
.setTitle(
"[" + file.getName() + "] "
+ getText(R.string.cant_read_folder))
.setPositiveButton("OK",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
}
}).show();
}
} else {
selectedFile = file;
v.setSelected(true);
selectButton.setEnabled(true);
}
}
You just have to edit how it handle's if (file.isDirectory())
. I would recommend declaring a boolean
value in your Activity which you change to true
if the file is a directory and it is already false. Then if said value is true, then traverse the directory. Also when you change said value to true
, you would need to call selectButton.setEnabled(true)
. This would be quite a bit less complicated than making your own code, I would say.
回答2:
How about using OI File Manager? This App has the following Intents: PICK_FILE
, PICK_DIRECTORY
.
There is even sample code on the page for using the Intents.
回答3:
Check out this answer https://stackoverflow.com/a/28479561/779140 I am mentioned library author so don't hesitate to ask any questions.
回答4:
I encountered the same issue and I end up using NoNonsense-FilePicker
Add to gradle file
compile 'com.nononsenseapps:filepicker:4.0.0'
Trigger file/folder/dir pick
try {
Utils.makeHepticFeedback(getActivity());
Intent selectDirectoyIntent = new Intent(getActivity(), FilePickerActivity.class);
selectDirectoyIntent.putExtra(FilePickerActivity.EXTRA_ALLOW_MULTIPLE, false);
selectDirectoyIntent.putExtra(FilePickerActivity.EXTRA_ALLOW_CREATE_DIR, true);
selectDirectoyIntent.putExtra(FilePickerActivity.EXTRA_MODE, FilePickerActivity.MODE_DIR);
selectDirectoyIntent.putExtra(FilePickerActivity.EXTRA_START_PATH, Environment.getExternalStorageDirectory().getPath());
startActivityForResult(selectDirectoyIntent, FILE_CODE);
} catch (Exception e) {
Log.e(LOG_TAG, "exception", e);
e.printStackTrace();
Toast.makeText(getActivity(), e.toString(), Toast.LENGTH_SHORT).show();
}
Handle Activity result to get selected file or files
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK && requestCode == CHOOSE_IMAGE_REQUEST_CODE) {
Uri selectedImageUri = data.getData();
String selectedImagePath = getRealPathFromURI(selectedImageUri);
// NOW WE HAVE OUR WANTED STRING
if (selectedImagePath != null) {
System.out
.println("selectedImagePath is the right one for you!");
PreferenceHelper.getPreferenceHelperInstance().setString(getActivity(),
PreferenceHelper.PLAYER_BACKGROUND,
selectedImageUri.toString());
Glide.with(getActivity()).load(Uri.parse(
PreferenceHelper.getPreferenceHelperInstance().getString(getActivity(),
PreferenceHelper.PLAYER_BACKGROUND
, AppConstants.DEFAULT_BACKGROUND_URL))).
into((ImageView) ButterKnife.findById(getActivity(), R.id.play_back));
}
} else if (requestCode == FILE_CODE && resultCode == Activity.RESULT_OK) {
if (null != data && !data.getBooleanExtra(FilePickerActivity.EXTRA_ALLOW_MULTIPLE, false)) {
// The URI will now be something like content://PACKAGE-NAME/root/path/to/file
Uri uri = data.getData();
// A utility method is provided to transform the URI to a File object
File file = com.nononsenseapps.filepicker.Utils.getFileForUri(uri);
// If you want a URI which matches the old return value, you can do
Uri fileUri = Uri.fromFile(file);
// Do something with the result...
Snackbar.make(fileFormat, "Recording folder updated to" + fileUri.getPath() + " ¯\\_(ツ)_/¯ ", Snackbar.LENGTH_SHORT).show();
AppConfig.RECORDING_FOLDER = fileUri.getPath();
PreferenceHelper.getPreferenceHelperInstance().setString(getActivity(), PreferenceHelper.RECORDING_FOLDER, AppConfig.RECORDING_FOLDER);
setUpSettingValue();
} else {
// Handling multiple results is one extra step
ArrayList<String> paths = data.getStringArrayListExtra(FilePickerActivity.EXTRA_PATHS);
if (paths != null) {
for (String path : paths) {
Uri uri = Uri.parse(path);
// Do something with the URI
File file = com.nononsenseapps.filepicker.Utils.getFileForUri(uri);
// If you want a URI which matches the old return value, you can do
Uri fileUri = Uri.fromFile(file);
// Do something with the result...
Toast.makeText(getActivity(), "Selected dir" + fileUri.getPath(), Toast.LENGTH_SHORT).show();
}
}
}
}
}
来源:https://stackoverflow.com/questions/8587325/how-to-select-folder-in-android