1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.example.android.viewanimations; 18 19 import android.app.Activity; 20 import android.os.Bundle; 21 import android.view.View; 22 import android.view.animation.AlphaAnimation; 23 import android.view.animation.Animation; 24 import android.view.animation.AnimationSet; 25 import android.view.animation.AnimationUtils; 26 import android.view.animation.RotateAnimation; 27 import android.view.animation.ScaleAnimation; 28 import android.view.animation.TranslateAnimation; 29 import android.widget.Button; 30 import android.widget.CheckBox; 31 32 /** 33 * This example shows how to use pre-3.0 view Animation classes to create various animated UI 34 * effects. See also the demo PropertyAnimations, which shows how this is done using the new 35 * ObjectAnimator API introduced in Android 3.0. 36 * 37 * Watch the associated video for this demo on the DevBytes channel of developer.android.com 38 * or on YouTube at https://www.youtube.com/watch?v=_UWXqFBF86U. 39 */ 40 public class ViewAnimations extends Activity { 41 42 CheckBox mCheckBox; 43 44 @Override 45 public void onCreate(Bundle savedInstanceState) { 46 super.onCreate(savedInstanceState); 47 setContentView(R.layout.activity_view_animations); 48 49 mCheckBox = (CheckBox) findViewById(R.id.checkbox); 50 final Button alphaButton = (Button) findViewById(R.id.alphaButton); 51 final Button translateButton = (Button) findViewById(R.id.translateButton); 52 final Button rotateButton = (Button) findViewById(R.id.rotateButton); 53 final Button scaleButton = (Button) findViewById(R.id.scaleButton); 54 final Button setButton = (Button) findViewById(R.id.setButton); 55 56 // Fade the button out and back in 57 final AlphaAnimation alphaAnimation = new AlphaAnimation(1, 0); 58 alphaAnimation.setDuration(1000); 59 60 // Move the button over and then back 61 final TranslateAnimation translateAnimation = 62 new TranslateAnimation(Animation.ABSOLUTE, 0, 63 Animation.RELATIVE_TO_PARENT, 1, 64 Animation.ABSOLUTE, 0, Animation.ABSOLUTE, 100); 65 translateAnimation.setDuration(1000); 66 67 // Spin the button around in a full circle 68 final RotateAnimation rotateAnimation = new RotateAnimation(0, 360, 69 Animation.RELATIVE_TO_SELF, .5f, Animation.RELATIVE_TO_SELF, .5f); 70 rotateAnimation.setDuration(1000); 71 72 // Scale the button in X and Y. 73 final ScaleAnimation scaleAnimation = new ScaleAnimation(1, 2, 1, 2); 74 scaleAnimation.setDuration(1000); 75 76 // Run the animations above in sequence on the final button. Looks horrible. 77 final AnimationSet setAnimation = new AnimationSet(true); 78 setAnimation.addAnimation(alphaAnimation); 79 setAnimation.addAnimation(translateAnimation); 80 setAnimation.addAnimation(rotateAnimation); 81 setAnimation.addAnimation(scaleAnimation); 82 83 setupAnimation(alphaButton, alphaAnimation, R.anim.alpha_anim); 84 setupAnimation(translateButton, translateAnimation, R.anim.translate_anim); 85 setupAnimation(rotateButton, rotateAnimation, R.anim.rotate_anim); 86 setupAnimation(scaleButton, scaleAnimation, R.anim.scale_anim); 87 setupAnimation(setButton, setAnimation, R.anim.set_anim); 88 89 } 90 91 private void setupAnimation(View view, final Animation animation, 92 final int animationID) { 93 view.setOnClickListener(new View.OnClickListener() { 94 public void onClick(View v) { 95 // If the button is checked, load the animation from the given resource 96 // id instead of using the passed-in animation paramter. See the xml files 97 // for the details on those animations. 98 v.startAnimation(mCheckBox.isChecked() ? 99 AnimationUtils.loadAnimation(ViewAnimations.this, animationID) : 100 animation); 101 } 102 }); 103 } 104 } 105
