AlphaAnimation 透明效果实现：

activity_main.xml中仅仅是一个简单的图片，下面的例子都会使用这个xml：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context=".MainActivity" ><!-- 用于动画的图片 --><ImageViewandroid:id="@+id/imageView1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentLeft="true"android:layout_alignParentTop="true"android:layout_marginLeft="70dp"android:layout_marginTop="138dp"android:src="@drawable/jhs_button1_h" /></RelativeLayout>

透明效果的java代码：

package com.example.test.com;import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.DecelerateInterpolator;
import android.widget.ImageView;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.activity_main);ImageView imageView = (ImageView) findViewById(R.id.imageView1);//图片点击的时候，启动动画效果  imageView.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Animation anim = getAlphaAnimation();v.startAnimation(anim);}});}/*** 透明效果* @return*/public Animation getAlphaAnimation() {//实例化 AlphaAnimation 主要是改变透明度//透明度 从 1-不透明 0-完全透明 Animation animation = new AlphaAnimation(1.0f, 0.5f);//设置动画插值器 被用来修饰动画效果,定义动画的变化率 animation.setInterpolator(new DecelerateInterpolator());//设置动画执行时间animation.setDuration(1000);return animation;}}

ScaleAnimation 缩放效果实现：

package com.example.test.com;import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.ScaleAnimation;
import android.widget.ImageView;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.activity_main);ImageView imageView = (ImageView) findViewById(R.id.imageView1);//图片点击的时候，启动动画效果  imageView.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Animation scalegetAnim = getScaleAnimation();v.startAnimation(scalegetAnim);}});}/*** 缩放动画* @return*/public Animation getScaleAnimation() {//实例化 ScaleAnimation 主要是缩放效果//参数：fromX-动画开始前，x坐标   toX-动画结束后x坐标//fromY-动画开始前，Y坐标  toY-动画结束后Y坐标//pivotXType - 为动画相对于物件的X坐标的参照物   pivotXValue - 值//pivotYType - 为动画相对于物件的Y坐标的参照物   pivotYValue - 值Animation animation = new ScaleAnimation(1.0f, 0.0f, 1.0f, 0.0f, Animation.RELATIVE_TO_SELF, 0.5f,Animation.RELATIVE_TO_SELF, 0.5f);//设置动画插值器 被用来修饰动画效果,定义动画的变化率 animation.setInterpolator(new DecelerateInterpolator());//设置动画执行时间animation.setDuration(1000);return animation;}}

RotateAnimation 旋转效果实现：

package com.example.test.com;import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.widget.ImageView;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.activity_main);ImageView imageView = (ImageView) findViewById(R.id.imageView1);//图片点击的时候，启动动画效果  imageView.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Animation rotateAnim = getRotateAnimation();v.startAnimation(rotateAnim);}});}/*** 旋转* @return*/public Animation getRotateAnimation() {//实例化RotateAnimation//以自身中心为圆心，旋转360度 正值为顺时针旋转，负值为逆时针旋转RotateAnimation animation = new RotateAnimation(0, 360, Animation.RELATIVE_TO_SELF, 0.5f,Animation.RELATIVE_TO_SELF, 0.5f);  //设置动画插值器 被用来修饰动画效果,定义动画的变化率 animation.setInterpolator(new DecelerateInterpolator());//设置动画执行时间animation.setDuration(1000);return animation;}}

TranslateAnimation 移动效果实现：

package com.example.test.com;import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.activity_main);ImageView imageView = (ImageView) findViewById(R.id.imageView1);//图片点击的时候，启动动画效果  imageView.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Animation translateAnim = getTranslateAnimation();v.startAnimation(translateAnim);}});}/*** 移动* @return*/public Animation getTranslateAnimation() {//实例化TranslateAnimation//以自身为坐标系和长度单位，从(0,0)移动到(1,1)TranslateAnimation animation = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 1.0f, Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF, 1.0f);  //设置动画插值器 被用来修饰动画效果,定义动画的变化率 animation.setInterpolator(new DecelerateInterpolator());//设置动画执行时间animation.setDuration(1000);return animation;}}

AnimationSet 动画集合实现和使用：

package com.example.test.com;import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.view.animation.AlphaAnimation;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.RotateAnimation;
import android.view.animation.ScaleAnimation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.activity_main);ImageView imageView = (ImageView) findViewById(R.id.imageView1);//图片点击的时候，启动动画效果  imageView.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {//AnimationSet类是一个Animation集合，里面可以许多Animation，//且在AnimationSet中设置的属性适用于里面的所有Animation。//参数true 则共享@InterpolatorAnimationSet set = new AnimationSet(true);//透明Animation alphaAnim = getAlphaAnimation();set.addAnimation(alphaAnim);//缩放Animation scalegetAnim = getScaleAnimation();set.addAnimation(scalegetAnim);//旋转Animation rotateAnim = getRotateAnimation();set.addAnimation(rotateAnim);//移动 上面三个动画是同时进行的，我现在需要让移动这个动画在上面的动画之后执行//需要使用setStartOffset 设置动画开始的时间Animation translateAnim = getTranslateAnimation();translateAnim.setStartOffset(500);set.addAnimation(translateAnim);v.startAnimation(set);}});}/*** 透明效果* @return*/public Animation getAlphaAnimation() {//实例化 AlphaAnimation 主要是改变透明度//透明度 从 1-不透明 0-完全透明 Animation animation = new AlphaAnimation(1.0f, 0.8f);//设置动画插值器 被用来修饰动画效果,定义动画的变化率 animation.setInterpolator(new DecelerateInterpolator());//设置动画执行时间animation.setDuration(1000);return animation;}/*** 缩放动画* @return*/public Animation getScaleAnimation() {//实例化 ScaleAnimation 主要是缩放效果//参数：fromX-动画开始前，x坐标   toX-动画结束后x坐标//fromY-动画开始前，Y坐标  toY-动画结束后Y坐标//pivotXType - 为动画相对于物件的X坐标的参照物   pivotXValue - 值//pivotYType - 为动画相对于物件的Y坐标的参照物   pivotYValue - 值Animation animation = new ScaleAnimation(1.0f, 0.0f, 1.0f, 0.0f,Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,0.5f);//设置动画插值器 被用来修饰动画效果,定义动画的变化率 animation.setInterpolator(new DecelerateInterpolator());//设置动画执行时间animation.setDuration(1000);return animation;}/*** 旋转* @return*/public Animation getRotateAnimation() {//实例化RotateAnimation//以自身中心为圆心，旋转360度  正值为顺时针旋转，负值为逆时针旋转RotateAnimation animation = new RotateAnimation(0, 360,Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF,0.5f);//设置动画插值器 被用来修饰动画效果,定义动画的变化率 animation.setInterpolator(new DecelerateInterpolator());//设置动画执行时间animation.setDuration(1000);return animation;}/*** 移动* @return*/public Animation getTranslateAnimation() {//实例化TranslateAnimation//以自身为坐标系和长度单位，从(0,0)移动到(1,1)TranslateAnimation animation = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF,1.0f, Animation.RELATIVE_TO_SELF, 0.0f,Animation.RELATIVE_TO_SELF, 1.0f);//设置动画插值器 被用来修饰动画效果,定义动画的变化率 animation.setInterpolator(new DecelerateInterpolator());//设置动画执行时间animation.setDuration(1000);return animation;}}

Interpolator 描述动画的速率：

安卓默认的Interpolator：

AccelerateInterpolator：动画开始时比较慢，然后逐渐加速。

DecelerateInterpolator：动画开始时比较快，然后逐渐减速。

AccelerateDecelerateInterpolator：动画开始时和结束时比较慢，中间过程加速。

LinearInterpolator：动画匀速进行。

CycleInterpolator：动画循环播放指定次数，速率沿着正弦曲线改变。

DecelerateInterpolator代码：主要实现getInterpolation ，也可以自定义

/** Copyright (C) 2007 The Android Open Source Project** 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 android.view.animation;import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;/*** An interpolator where the rate of change starts out quickly and * and then decelerates.**/
public class DecelerateInterpolator implements Interpolator {public DecelerateInterpolator() {}/*** Constructor* * @param factor Degree to which the animation should be eased. Setting factor to 1.0f produces*        an upside-down y=x^2 parabola. Increasing factor above 1.0f makes exaggerates the*        ease-out effect (i.e., it starts even faster and ends evens slower)*/public DecelerateInterpolator(float factor) {mFactor = factor;}public DecelerateInterpolator(Context context, AttributeSet attrs) {TypedArray a =context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.DecelerateInterpolator);mFactor = a.getFloat(com.android.internal.R.styleable.DecelerateInterpolator_factor, 1.0f);a.recycle();}public float getInterpolation(float input) {float result;if (mFactor == 1.0f) {result = (float)(1.0f - (1.0f - input) * (1.0f - input));} else {result = (float)(1.0f - Math.pow((1.0f - input), 2 * mFactor));}return result;}private float mFactor = 1.0f;
}

使用：

        //设置动画插值器 被用来修饰动画效果,定义动画的变化率 animation.setInterpolator(new DecelerateInterpolator());

AnimationListener 监听器：

可以监听动画前，动画结束，动画repeat的时候的动作，对上面代码中的移动效果进行动画监听：

 /*** 移动* @return*/public Animation getTranslateAnimation() {//实例化TranslateAnimation//以自身为坐标系和长度单位，从(0,0)移动到(1,1)TranslateAnimation animation = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0.0f, Animation.RELATIVE_TO_SELF,1.0f, Animation.RELATIVE_TO_SELF, 0.0f,Animation.RELATIVE_TO_SELF, 1.0f);//设置动画插值器 被用来修饰动画效果,定义动画的变化率 animation.setInterpolator(new DecelerateInterpolator());//设置重复动画animation.setRepeatCount(2); //设置动画执行时间animation.setDuration(1000);//设置监听器animation.setAnimationListener(new AnimationListener() {@Overridepublic void onAnimationStart(Animation animation) {//动画开始前Toast.makeText(getBaseContext(), "Strart!", Toast.LENGTH_SHORT).show();  }@Overridepublic void onAnimationRepeat(Animation animation) {//重复动画的时候，Toast.makeText(getBaseContext(), "Repeat!", Toast.LENGTH_SHORT).show();  }@Overridepublic void onAnimationEnd(Animation animation) {// 结束动画的时候Toast.makeText(getBaseContext(), "End!", Toast.LENGTH_SHORT).show();  }});return animation;}