Java tutorial
//package com.java2s; /* * Copyright (C) 2012-2013 Ognyan Bankov * * 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. */ import android.view.View; import android.widget.RadioGroup; public class Main { public static final RadioGroup initRadioGroup(View view, int resourceId, RadioGroup.OnCheckedChangeListener listener) { RadioGroup ret = null; ret = findRadioGroupX(view, resourceId); ret.setOnCheckedChangeListener(listener); return ret; } public static final RadioGroup findRadioGroupX(View view, int resourceId) { RadioGroup ret = null; ret = (RadioGroup) view.findViewById(resourceId); if (ret == null) { throw new RuntimeException("Cannot find RadioGroup with id = " + resourceId); } return ret; } }