Android实现伸缩弹力分布菜单效果的示例

package com.spring.menu.activity;

import com.spring.menu.R;
import com.spring.menu.animation.SpringAnimation;
import com.spring.menu.animation.EnlargeAnimationOut;
import com.spring.menu.animation.ShrinkAnimationOut;
import com.spring.menu.animation.ZoomAnimation;
import com.spring.menu.utility.DeviceUtility;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.view.animation.AnticipateInterpolator;
import android.widget.RelativeLayout;

/**
 * Android实现伸缩弹力分布菜单效果
 * @Description: Android实现伸缩弹力分布菜单效果

 * @File: MainActivity.java

 * @Package com.spring.menu.activity

 * @Author Hanyonglu

 * @Date 2012-10-25 下午09:41:31

 * @Version V1.0
 */
public class MainActivity extends Activity {
 private boolean areMenusShowing;
 private ViewGroup menusWrapper;
 private View imageViewPlus;
 private View shrinkRelativeLayout;
 private RelativeLayout layoutMain;
 // 顺时针旋转动画
 private Animation animRotateClockwise;
 // 你试着旋转动画
 private Animation animRotateAntiClockwise;
 private Class<&＃63;>[] intentActivity = {
   SecondActivity.class,ThreeActivity.class,FourActivity.class,
   SecondActivity.class,ThreeActivity.class,FourActivity.class};
 private int[] mainResources = {
   R.drawable.bg_main_1,R.drawable.bg_main_2,
   R.drawable.bg_main_3,R.drawable.bg_main_4,
   R.drawable.bg_main_1,R.drawable.bg_main_4};

 /** Called when the activity is first created. */
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main_activity);
  
  // 初始化
  initViews();
 }
 
 // 初始化
 private void initViews(){
  imageViewPlus = findViewById(R.id.imageview_plus);
  menusWrapper = (ViewGroup) findViewById(R.id.menus_wrapper);
  shrinkRelativeLayout = findViewById(R.id.relativelayout_shrink);
  layoutMain = (RelativeLayout) findViewById(R.id.layout_content);
  
  animRotateClockwise = AnimationUtils.loadAnimation(
    this,R.anim.rotate_clockwise);
  animRotateAntiClockwise = AnimationUtils.loadAnimation(
    this,R.anim.rotate_anticlockwise);

  shrinkRelativeLayout.setOnClickListener(new OnClickListener() {

   public void onClick(View v) {
    // TODO Auto-generated method stub
    showLinearMenus();
   }
  });
  
  for (int i = 0; i  cls;
  private int resource;

  private SpringMenuLauncher(Class<&＃63;> c,int resource) {
   this.cls = c;
   this.resource = resource;
  }

  public void onClick(View v) {
   // TODO Auto-generated method stub
   MainActivity.this.startSpringMenuAnimations(v);
   layoutMain.setBackgroundResource(resource);
   
//   MainActivity.this.startActivity(
//     new Intent(
//       MainActivity.this,
//       MainActivity.SpringMenuLauncher.this.cls));
  }
 }

 /**
  * 展现菜单动画效果
  * @param view
  * @param runnable
  */
 private void startSpringMenuAnimations(View view) {
  areMenusShowing = true;
  Animation shrinkOut1 = new ShrinkAnimationOut(300);
  Animation growOut = new EnlargeAnimationOut(300);
  shrinkOut1.setInterpolator(new AnticipateInterpolator(2.0F));
  shrinkOut1.setAnimationListener(new Animation.AnimationListener() {

   public void onAnimationEnd(Animation animation) {
    // TODO Auto-generated method stub
    MainActivity.this.imageViewPlus.clearAnimation();
   }

   public void onAnimationRepeat(Animation animation) {
    // TODO Auto-generated method stub
    
   }

   public void onAnimationStart(Animation animation) {
    // TODO Auto-generated method stub
    
   }
  });
  
  view.startAnimation(growOut);
 }
}

<&＃63;xml version="1.0" encoding="UTF-8"&＃63;>

package com.spring.menu.animation;

import com.spring.menu.control.ImageButtonExtend;

import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.MarginLayoutParams;
import android.view.animation.AnticipateInterpolator;
import android.view.animation.AnticipateOvershootInterpolator;
import android.view.animation.OvershootInterpolator;
import android.view.animation.TranslateAnimation;

/**
 * 分布菜单加载和伸缩动画
 * @Description: 分布菜单加载和伸缩动画

 * @File: SpringAnimation.java

 * @Package com.spring.menu.animation

 * @Author Hanyonglu

 * @Date 2012-10-25 下午12:18:39

 * @Version V1.0
 */
public class SpringAnimation extends ZoomAnimation {
 private static int[] size;
 private static int xOffset = 210;
 private static int yOffset = -15;
 public static final int DURATION = 300;
 
 /**
  * 构造器
  * @param direction
  * @param duration
  * @param view
  */
 public SpringAnimation(Direction direction, long duration, View view) {
  super(direction, duration, new View[] { view });
  SpringAnimation.xOffset = SpringAnimation.size[0] / 2 - 30;
 }

 /**
  * 开始显示动画效果
  * @param viewgroup
  * @param direction
  * @param size
  */
 public static void startAnimations(ViewGroup viewgroup,
   ZoomAnimation.Direction direction, int[] size) {
  SpringAnimation.size = size;
  
  switch (direction) {
  case HIDE:
   startShrinkAnimations(viewgroup);
   break;
  case SHOW:
   startEnlargeAnimations(viewgroup);
   break;
  }
 }

 /**
  * 开始呈现菜单
  * @param viewgroup
  */
 private static void startEnlargeAnimations(ViewGroup viewgroup) {
  for (int i = 0; i 

package com.spring.menu.animation;

import android.view.View;
import android.view.animation.AnimationSet;

/**
 * 放大缩小动画类
 * @Description: 放大缩小动画类

 * @File: ZoomAnimation.java

 * @Package com.spring.menu.animation

 * @Author Hanyonglu

 * @Date 2012-10-25 下午11:37:52

 * @Version V1.0
 */
public abstract class ZoomAnimation extends AnimationSet {
 public Direction direction;

 public enum Direction {
  HIDE, SHOW;
 }

 public ZoomAnimation(Direction direction, long duration, View[] views) {
  super(true);
  this.direction = direction;
  
  switch (this.direction) {
  case HIDE:
   addShrinkAnimation(views);
   break;
  case SHOW:
   addEnlargeAnimation(views);
   break;
  }
  
  setDuration(duration);
 }

 protected abstract void addShrinkAnimation(View[] views);
 
 protected abstract void addEnlargeAnimation(View[] views);
}

package com.spring.menu.layout;

/**
 * 实现伸缩弹力分布菜单布局类
 * @Description: 实现伸缩弹力分布菜单布局类

 * @File: SpringMenuLayout.java

 * @Package com.spring.menu.layout

 * @Author Hanyonglu

 * @Date 2012-10-26 下午07:57:56

 * @Version V1.0
 */
public class SpringMenuLayout {
 // 自动生成直线型布局
 
 // 自动生成圆弧型布局
}