Java tutorial
/* * Copyright 2015 Synced Synapse. All rights reserved. * * 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 org.xbmc.kore.ui.generic; import android.app.Activity; import android.app.Dialog; import android.content.DialogInterface; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.app.DialogFragment; import android.support.v7.app.AlertDialog; /** * Dialog fragment that presents a list options to the user. */ public class GenericSelectDialog extends DialogFragment { // The listener activity we will call when the user finishes the selection private GenericSelectDialogListener mListener; /** * Interface to pass events back to the calling activity * The calling activity must implement this interface */ public interface GenericSelectDialogListener { public void onDialogSelect(int token, int which); } private static final String TOKEN_KEY = "TOKEN", TITLE_KEY = "TITLE", ARRAY_ID_KEY = "ARRAY_ID_KEY", ARRAY_ITEMS = "ARRAY_ITEMS", SELECTED_ITEM_KEY = "SELECTED_ITEM"; /** * Create a new instance of the dialog, providing arguments. * @param listener Listener for selection * @param token Token to be returned on the callback, to differentiate different calls * @param title Title of the dialog * @param arrayId String array id of the options to show in the dialog * @param selectedItem Index of the selected item */ public static GenericSelectDialog newInstance(GenericSelectDialogListener listener, int token, String title, int arrayId, int selectedItem) { GenericSelectDialog dialog = new GenericSelectDialog(); // TODO: This isn't going to survive destroys, but it's the easiast way to communicate dialog.mListener = listener; Bundle args = new Bundle(); args.putInt(TOKEN_KEY, token); args.putString(TITLE_KEY, title); args.putInt(ARRAY_ID_KEY, arrayId); args.putInt(SELECTED_ITEM_KEY, selectedItem); dialog.setArguments(args); return dialog; } /** * Create a new instance of the dialog, providing arguments. * @param listener Listener for selection * @param token Token to be returned on the callback, to differentiate different calls * @param title Title of the dialog * @param items String array of the options to show in the dialog * @param selectedItem Index of the selected item * @return New dialog */ public static GenericSelectDialog newInstance(GenericSelectDialogListener listener, int token, String title, CharSequence[] items, int selectedItem) { GenericSelectDialog dialog = new GenericSelectDialog(); // TODO: This isn't going to survive destroys, but it's the easiast way to communicate dialog.mListener = listener; Bundle args = new Bundle(); args.putInt(TOKEN_KEY, token); args.putString(TITLE_KEY, title); args.putCharSequenceArray(ARRAY_ITEMS, items); args.putInt(SELECTED_ITEM_KEY, selectedItem); dialog.setArguments(args); return dialog; } /** * Override the attach to the activity to guarantee that the activity implements * GenericSelectDialogListener interface. * * @param activity Context activity that implements GenericSelectDialogListener */ @Override public void onAttach(Activity activity) { super.onAttach(activity); // // Try class cast // try { // mListener = (GenericSelectDialogListener)activity; // } catch (ClassCastException e) { // throw new ClassCastException(activity.toString() + " must implement GenericSelectDialogListener"); // } } /** * Build the dialog * * @param savedInstanceState State * * @return Dialog to select calendars */ @NonNull @Override public Dialog onCreateDialog(Bundle savedInstanceState) { super.onCreate(savedInstanceState); AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); Bundle args = getArguments(); final String title = args.getString(TITLE_KEY); final int token = args.getInt(TOKEN_KEY); final int selectedItem = args.getInt(SELECTED_ITEM_KEY); builder.setTitle(title); if (getArguments().containsKey(ARRAY_ID_KEY)) { final int arrayId = args.getInt(ARRAY_ID_KEY); builder.setSingleChoiceItems(arrayId, selectedItem, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { if (mListener != null) mListener.onDialogSelect(token, which); dialog.dismiss(); } }); } else { final CharSequence[] items = args.getCharSequenceArray(ARRAY_ITEMS); // TODO: This should be a singleChoiceItems, but how do we include actions in it? // builder.setSingleChoiceItems(items, selectedItem, // new DialogInterface.OnClickListener() { // @Override // public void onClick(DialogInterface dialog, int which) { // if (mListener != null) // mListener.onDialogSelect(token, which); // dialog.dismiss(); // } // }); builder.setItems(items, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { if (mListener != null) mListener.onDialogSelect(token, which); dialog.dismiss(); } }); } return builder.create(); } }