Android33_Animations使用（一）
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?使用TweenedAnimations的步骤：
?????? 1.创建一个AnimationSet对象（Animation子类）；
?????? 2.增加需要创建相应的Animation对象；
?????? 3.更加项目的需求，为Animation对象设置相应的数据；
?????? 4.将Animatin对象添加到AnimationSet对象当中；
?????? 5.使用控件对象开始执行AnimationSet。
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" ><LinearLayout android:orientation="horizontal" android:layout_height="wrap_content" android:layout_width="wrap_content"><Button android:id="@+id/rotateButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="旋转"/><Button android:id="@+id/scaleButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="缩放"/><Button android:id="@+id/alphaButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="淡入淡出"/><Button android:id="@+id/translateButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="移动"/></LinearLayout><LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"><ImageView android:id="@+id/image" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:src="@drawable/image"/></LinearLayout></LinearLayout>
package com.android.activity;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.view.animation.AlphaAnimation;import android.view.animation.Animation;import android.view.animation.AnimationSet;import android.view.animation.RotateAnimation;import android.view.animation.ScaleAnimation;import android.view.animation.TranslateAnimation;import android.widget.Button;import android.widget.ImageView;public class AnimationsActivity extends Activity {private Button rotateButton = null;private Button scaleButton = null;private Button alphaButton = null;private Button translateButton = null;private ImageView image = null;@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); rotateButton = (Button)findViewById(R.id.rotateButton); scaleButton = (Button)findViewById(R.id.scaleButton); alphaButton = (Button)findViewById(R.id.alphaButton); translateButton = (Button)findViewById(R.id.translateButton); image = (ImageView)findViewById(R.id.image); rotateButton.setOnClickListener(new RotateButtonListener()); scaleButton.setOnClickListener(new ScaleButtonListener()); alphaButton.setOnClickListener(new AlphaButtonListener()); translateButton.setOnClickListener(new TranslateButtonListener()); }class AlphaButtonListener implements OnClickListener{public void onClick(View v) {//创建一个AnimationSet对象，参数为Boolean型，//true表示使用Animation的interpolator，false则是使用自己的AnimationSet animationSet = new AnimationSet(true);//创建一个AlphaAnimation对象，参数从完全的透明度，到完全的不透明AlphaAnimation alphaAnimation = new AlphaAnimation(1, 0);//设置动画执行的时间alphaAnimation.setDuration(500);//将alphaAnimation对象添加到AnimationSet当中animationSet.addAnimation(alphaAnimation);//使用ImageView的startAnimation方法执行动画image.startAnimation(animationSet);}}class RotateButtonListener implements OnClickListener{public void onClick(View v) {AnimationSet animationSet = new AnimationSet(true);//参数1：从哪个旋转角度开始//参数2：转到什么角度//后4个参数用于设置围绕着旋转的圆的圆心在哪里//参数3：确定x轴坐标的类型，有ABSOLUT绝对坐标、RELATIVE_TO_SELF相对于自身坐标、RELATIVE_TO_PARENT相对于父控件的坐标//参数4：x轴的值，0.5f表明是以自身这个控件的一半长度为x轴//参数5：确定y轴坐标的类型//参数6：y轴的值，0.5f表明是以自身这个控件的一半长度为x轴RotateAnimation rotateAnimation = new RotateAnimation(0, 360,Animation.RELATIVE_TO_SELF,0.5f,Animation.RELATIVE_TO_SELF,0.5f);rotateAnimation.setDuration(1000);animationSet.addAnimation(rotateAnimation);image.startAnimation(animationSet);}}class ScaleButtonListener implements OnClickListener{public void onClick(View v) {AnimationSet animationSet = new AnimationSet(true);//参数1：x轴的初始值//参数2：x轴收缩后的值//参数3：y轴的初始值//参数4：y轴收缩后的值//参数5：确定x轴坐标的类型//参数6：x轴的值，0.5f表明是以自身这个控件的一半长度为x轴//参数7：确定y轴坐标的类型//参数8：y轴的值，0.5f表明是以自身这个控件的一半长度为x轴ScaleAnimation scaleAnimation = new ScaleAnimation(0, 0.1f,0,0.1f,Animation.RELATIVE_TO_SELF,0.5f,Animation.RELATIVE_TO_SELF,0.5f);scaleAnimation.setDuration(1000);animationSet.addAnimation(scaleAnimation);image.startAnimation(animationSet);}}class TranslateButtonListener implements OnClickListener{public void onClick(View v) {AnimationSet animationSet = new AnimationSet(true);//参数1～2：x轴的开始位置//参数3～4：y轴的开始位置//参数5～6：x轴的结束位置//参数7～8：x轴的结束位置TranslateAnimation translateAnimation = new TranslateAnimation(Animation.RELATIVE_TO_SELF,0f,Animation.RELATIVE_TO_SELF,0.5f,Animation.RELATIVE_TO_SELF,0f,Animation.RELATIVE_TO_SELF,0.5f);translateAnimation.setDuration(1000);animationSet.addAnimation(translateAnimation);image.startAnimation(animationSet);}}}
