Java tutorial
/* * Copyright (C) 2015 Naman Dwivedi * * Licensed under the GNU General Public License v3 * * This is free software: you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * See the GNU General Public License for more details. */ package com.bluros.music.utils; import android.os.Build; import android.support.v4.view.ViewCompat; import android.support.v4.view.ViewPropertyAnimatorListener; import android.support.v4.view.animation.FastOutSlowInInterpolator; import android.view.View; import android.view.animation.Animation; import android.view.animation.AnimationUtils; import android.view.animation.Interpolator; import com.bluros.music.R; public class FabAnimationUtils { private static final long DEFAULT_DURATION = 200L; private static final Interpolator FAST_OUT_SLOW_IN_INTERPOLATOR = new FastOutSlowInInterpolator(); public static void scaleIn(final View fab) { scaleIn(fab, DEFAULT_DURATION, null); } public static void scaleIn(final View fab, long duration, final ScaleCallback callback) { fab.setVisibility(View.VISIBLE); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) { ViewCompat.animate(fab).scaleX(1.0F).scaleY(1.0F).alpha(1.0F).setDuration(duration) .setInterpolator(FAST_OUT_SLOW_IN_INTERPOLATOR).withLayer() .setListener(new ViewPropertyAnimatorListener() { public void onAnimationStart(View view) { if (callback != null) callback.onAnimationStart(); } public void onAnimationCancel(View view) { } public void onAnimationEnd(View view) { view.setVisibility(View.VISIBLE); if (callback != null) callback.onAnimationEnd(); } }).start(); } else { Animation anim = AnimationUtils.loadAnimation(fab.getContext(), R.anim.design_fab_out); anim.setDuration(duration); anim.setInterpolator(FAST_OUT_SLOW_IN_INTERPOLATOR); anim.setAnimationListener(new Animation.AnimationListener() { public void onAnimationStart(Animation animation) { if (callback != null) callback.onAnimationStart(); } public void onAnimationEnd(Animation animation) { fab.setVisibility(View.VISIBLE); if (callback != null) callback.onAnimationEnd(); } @Override public void onAnimationRepeat(Animation animation) { // } }); fab.startAnimation(anim); } } public static void scaleOut(final View fab) { scaleOut(fab, DEFAULT_DURATION, null); } public static void scaleOut(final View fab, final ScaleCallback callback) { scaleOut(fab, DEFAULT_DURATION, callback); } public static void scaleOut(final View fab, long duration, final ScaleCallback callback) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) { ViewCompat.animate(fab).scaleX(0.0F).scaleY(0.0F).alpha(0.0F) .setInterpolator(FAST_OUT_SLOW_IN_INTERPOLATOR).setDuration(duration).withLayer() .setListener(new ViewPropertyAnimatorListener() { public void onAnimationStart(View view) { if (callback != null) callback.onAnimationStart(); } public void onAnimationCancel(View view) { } public void onAnimationEnd(View view) { view.setVisibility(View.INVISIBLE); if (callback != null) callback.onAnimationEnd(); } }).start(); } else { Animation anim = AnimationUtils.loadAnimation(fab.getContext(), R.anim.design_fab_out); anim.setInterpolator(FAST_OUT_SLOW_IN_INTERPOLATOR); anim.setDuration(duration); anim.setAnimationListener(new Animation.AnimationListener() { public void onAnimationStart(Animation animation) { if (callback != null) callback.onAnimationStart(); } public void onAnimationEnd(Animation animation) { fab.setVisibility(View.INVISIBLE); if (callback != null) callback.onAnimationEnd(); } @Override public void onAnimationRepeat(Animation animation) { // } }); fab.startAnimation(anim); } } public interface ScaleCallback { void onAnimationStart(); void onAnimationEnd(); } }