Java tutorial
/* * Copyright 2013 Kii * * 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.booksaround.me.title.util; import android.content.Context; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.view.View; import android.widget.EditText; import android.widget.RadioGroup; import android.widget.SeekBar; import android.widget.Toast; import com.booksaround.me.R; public class ViewUtil { /** * call setOnClickListener(listener) to each view * @param root is parent view * @param listener is listener object * @param ids is list of id which you want to set */ public static void setClickListener(View root, View.OnClickListener listener, int... ids) { for (int id : ids) { View view = root.findViewById(id); view.setOnClickListener(listener); } } /** * get a value of EditText * @param root * @param resId * @return value of EditText */ public static String getValueOfEditText(View root, int resId) { EditText edit = (EditText) root.findViewById(resId); if (edit == null) { throw new RuntimeException("View not found id=" + resId); } return edit.getText().toString(); } /** * get id of checked radio buttion * @param root * @param resId is id of RadioGroup * @return */ public static int getIdOfRadioChecked(View root, int resId) { RadioGroup group = (RadioGroup) root.findViewById(resId); if (group == null) { throw new RuntimeException("View not found id=" + resId); } return group.getCheckedRadioButtonId(); } /** * get a value of SeekBar * @param root * @param resId * @return value of SeekBar */ public static int getValueOfSeekBar(View root, int resId) { SeekBar bar = (SeekBar) root.findViewById(resId); if (bar == null) { throw new RuntimeException("View not found id=" + resId); } return bar.getProgress(); } /** * show toast * @param context * @param resId is R.string.xxxx to show as toast */ public static void showToast(Context context, int resId) { showToast(context, context.getString(resId)); } /** * show toast * @param context * @param message */ public static void showToast(Context context, String message) { Toast.makeText(context, message, Toast.LENGTH_LONG).show(); } /** * replace with next fragment * @param manager is fragment manager * @param next is fragment you want to replace with * @param addBackstack true : add current fragment to backstack */ public static void toNextFragment(FragmentManager manager, Fragment next, boolean addBackstack) { FragmentTransaction transaction = manager.beginTransaction(); if (addBackstack) { transaction.addToBackStack(""); } transaction.replace(R.id.main, next); transaction.commit(); } }