Java tutorial
/* * Copyright (C) 2017 skydoves * * 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.skydoves.elasticviewsexample.ElasticVIews; import android.support.v4.view.ViewCompat; import android.support.v4.view.ViewPropertyAnimatorListener; import android.util.Log; import android.view.View; import android.view.ViewGroup; import android.view.animation.CycleInterpolator; public class ElasticAction { private final static String TAG = "ElasticAction"; public static void doAction(View view, int duration, float scaleX, float scaleY) { try { if (view.getScaleX() == 1) { ViewCompat.animate(view).setDuration(duration).scaleX(scaleX).scaleY(scaleY) .setInterpolator(new CycleInterpolator(0.5f)) .setListener(new ViewPropertyAnimatorListener() { @Override public void onAnimationStart(final View view) { } @Override public void onAnimationEnd(final View v) { } @Override public void onAnimationCancel(final View view) { } }).withLayer().start(); } } catch (Exception e) { Log.e(TAG, "only ViewGroups : likes RelativeLayout, LinearLayout, etc could doAction"); } } public static void doAction(ViewGroup view, int duration, float scaleX, float scaleY) { try { if (view.getScaleX() == 1) { ViewCompat.animate(view).setDuration(duration).scaleX(scaleX).scaleY(scaleY) .setInterpolator(new CycleInterpolator(0.5f)) .setListener(new ViewPropertyAnimatorListener() { @Override public void onAnimationStart(final View view) { } @Override public void onAnimationEnd(final View v) { } @Override public void onAnimationCancel(final View view) { } }).withLayer().start(); for (int index = 0; index < ((ViewGroup) view).getChildCount(); ++index) { View nextChild = ((ViewGroup) view).getChildAt(index); ViewCompat.animate(nextChild).setDuration(duration).scaleX(scaleX).scaleY(scaleY) .setInterpolator(new CycleInterpolator(0.5f)) .setListener(new ViewPropertyAnimatorListener() { @Override public void onAnimationStart(final View view) { } @Override public void onAnimationEnd(final View v) { } @Override public void onAnimationCancel(final View view) { } }).withLayer().start(); } } } catch (Exception e) { Log.e(TAG, "only ViewGroups : likes RelativeLayout, LinearLayout, etc could doAction"); } } }