Java tutorial
/* * Copyright (C) 2014 George Venios * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.veniosg.dir.android.dialog; import android.app.AlertDialog; import android.app.Dialog; import android.content.Context; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.app.DialogFragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.EditText; import android.widget.LinearLayout; import com.veniosg.dir.R; import com.veniosg.dir.mvvm.model.storage.operation.CreateDirectoryOperation; import java.io.File; import static android.view.WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE; import static android.view.inputmethod.EditorInfo.IME_ACTION_GO; import static com.veniosg.dir.IntentConstants.EXTRA_DIR_PATH; import static com.veniosg.dir.mvvm.model.storage.operation.FileOperationRunnerInjector.operationRunner; import static com.veniosg.dir.mvvm.model.storage.operation.argument.CreateDirectoryArguments.createDirectoryArguments; public class CreateDirectoryDialog extends DialogFragment { private CharSequence text; private Context c; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { getDialog().getWindow().setSoftInputMode(SOFT_INPUT_STATE_VISIBLE); return super.onCreateView(inflater, container, savedInstanceState); } @NonNull @Override public Dialog onCreateDialog(Bundle savedInstanceState) { LayoutInflater inflater = LayoutInflater.from(getActivity()); LinearLayout view = (LinearLayout) inflater.inflate(R.layout.dialog_text_input, null); final EditText v = view.findViewById(R.id.textinput); v.setHint(R.string.folder_name); v.setOnEditorActionListener((text, actionId, event) -> { if (actionId == IME_ACTION_GO) createFolder(text.getText(), getActivity()); return true; }); AlertDialog dialog = new AlertDialog.Builder(getActivity()).setTitle(R.string.create_new_folder) .setView(view) .setPositiveButton(android.R.string.ok, (dialog1, which) -> createFolder(v.getText(), getActivity())) .setNegativeButton(android.R.string.cancel, null).create(); dialog.setIcon(R.drawable.ic_dialog_folder); return dialog; } private void createFolder(final CharSequence text, Context c) { if (text.length() != 0) { //noinspection ConstantConditions File parentPath = new File(getArguments().getString(EXTRA_DIR_PATH)); File tbc = new File(parentPath, text.toString()); if (!tbc.exists()) { operationRunner(c).run(new CreateDirectoryOperation(c), createDirectoryArguments(tbc)); dismiss(); } } } }