Java tutorial
//package com.java2s; /* * Copyright (C) 2016 android@19code.com * * 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.app.Activity; import android.content.Context; import android.content.ContextWrapper; import android.view.View; public class Main { public static Activity getActivity(View view) { Context context = view.getContext(); while (context instanceof ContextWrapper) { if (context instanceof Activity) { return (Activity) context; } context = ((ContextWrapper) context).getBaseContext(); } throw new IllegalStateException("View " + view + " is not attached to an Activity"); } }