Java tutorial
//package com.java2s; /* * Copyright (c) 2014-present, Facebook, Inc. * All rights reserved. * * This source code is licensed under the BSD-style license found in the * LICENSE file in the root directory of this source tree. An additional grant * of patent rights can be found in the PATENTS file in the same directory. */ import android.view.View; import android.view.ViewGroup; public class Main { public static int findChildIndex(ViewGroup parent, View child) { int count = parent.getChildCount(); for (int i = 0; i < count; ++i) { if (parent.getChildAt(i) == child) { return i; } } return -1; } }