Android中属性动画3----ObjectAnimator实现一个动画菜单

效果图

代码：

Main3Activity中

package com.zhh.android;import android.animation.ObjectAnimator;import android.app.Activity;import android.content.Intent;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.util.Log;import android.view.View;import android.view.animation.BounceInterpolator;import android.widget.ImageView;import android.widget.Toast;import java.util.ArrayList;import java.util.List;/** * 利用ObjectAnimator * 实现一个菜单 */public class Main3Activity extends Activity implements View.OnClickListener {    //  写一个存放图片的数组    private int[] imageArray = {R.id.imageViewA, R.id.imageViewB, R.id.imageViewC, R.id.imageViewD, R.id.imageViewE, R.id.imageViewF, R.id.imageViewG, R.id.imageViewH,};    private ArrayList<ImageView> imageViewArray = new ArrayList<>();    private boolean flag=true;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main3);        for (int i = 0; i < imageArray.length; i++) {            ImageView imageView = (ImageView) findViewById(imageArray[i]);            imageView.setOnClickListener(this);            imageViewArray.add(imageView);        }    }    @Override    public void onClick(View v) {        switch (v.getId()) {            case  R.id.imageViewA:                if(flag) {                    startAnimator();                }else{                    closeAnimator();                }                break;            default:                Toast.makeText(Main3Activity.this, "点击事件"+v.getId(), Toast.LENGTH_SHORT).show();                startActivity(new Intent(Main3Activity.this,Main4Activity.class));                break;        }    }    /**     * 展开菜单     */    private void startAnimator(){        Log.e("111","startAnimator");        for(int i = 1; i <imageArray.length ; i++) {            ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(imageViewArray.get(i),"translationY",0F,i*200F);            objectAnimator.setDuration(500);            //有加速度（速度是不断增加的）有回弹效果            objectAnimator.setInterpolator(new BounceInterpolator());            objectAnimator.setStartDelay(i*300);//动画延时执行            objectAnimator.start();        }        flag=false;    }    /**     * 关闭菜单     */    private void closeAnimator(){        Log.e("111","closeAnimator");        for(int i = 1; i <imageArray.length ; i++) {            ObjectAnimator objectAnimator = ObjectAnimator.ofFloat(imageViewArray.get(i),"translationY",i*200F,0F);            objectAnimator.setDuration(500);//          有加速度（速度是不断增加的）有回弹效果            objectAnimator.setInterpolator(new BounceInterpolator());            objectAnimator.setStartDelay(i*300);//动画延时执行            objectAnimator.start();        }        flag=true;    }}
activity_main3.xml

<?xml version="1.0" encoding="utf-8"?><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"    tools:context="com.zhh.android.Main3Activity">    <ImageView        android:id="@+id/imageViewB"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/b"        android:layout_centerHorizontal="true"        />    <ImageView        android:id="@+id/imageViewC"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/c"        android:layout_centerHorizontal="true"        />    <ImageView        android:id="@+id/imageViewD"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/d"        android:layout_centerHorizontal="true"        />    <ImageView        android:id="@+id/imageViewE"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/e"        android:layout_centerHorizontal="true"        />    <ImageView        android:id="@+id/imageViewF"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/f"        android:layout_centerHorizontal="true"        />    <ImageView        android:id="@+id/imageViewG"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/g"        android:layout_centerHorizontal="true"        />    <ImageView        android:id="@+id/imageViewH"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/h"        android:layout_centerHorizontal="true"        />    <ImageView        android:id="@+id/imageViewA"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/a"        android:layout_centerHorizontal="true"        /></RelativeLayout>
参考视频：

http://www.imooc.com/learn/263源码下载：

http://download.csdn.net/download/zhaihaohao1/10126123