安卓开发_浅谈Android动画（三）

一、LayoutAnimation布局动画

用于为一个layout里面的控件，或者是一个ViewGroup里面的控件设置动画效果

在res-anim文件下新建一个动画xml文件

 <?xml version="1.0" encoding="utf-8"?>
 <set xmlns:android="http://schemas.android.com/apk/res/android"
     android:interpolator="@android:anim/decelerate_interpolator" >

   <scale
         android:duration=""
         android:fromXScale="0.1"
         android:fromYScale="0.1"
         android:pivotX="50%"
         android:pivotY="50%"
         android:toXScale="1.0"
         android:toYScale="1.0" />
   <alpha
         android:duration=""
         android:fromAlpha=""
         android:toAlpha="1.0" />
 </set>

zoom_in

list为列表

//布局动画控制器
LayoutAnimationController lac = new LayoutAnimationController(AnimationUtils.loadAnimation(this,R.anim.zoom_in));
//动画方式 
lac.setOrder(LayoutAnimationController.ORDER_RANDOM);
//加载布局动画
list.setLayoutAnimation(lac);
//开始动画
list.startLayoutAnimation();
//为列表视图中选中的项添加响应事件

效果图：

全部代码：

 package other;

 import com.example.allcode.R;

 import android.app.Activity;
 import android.os.Bundle;
 import android.view.View;
 import android.view.animation.AnimationUtils;
 import android.view.animation.LayoutAnimationController;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ListView;
 import android.widget.Toast;

 public class Donghua_List extends Activity{
     private ListView list;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         // TODO Auto-generated method stub
         super.onCreate(savedInstanceState);
         setContentView(R.layout.donghua_layout);

         list = (ListView) findViewById(R.id.listView1);
         //布局动画控制器
         LayoutAnimationController lac = new LayoutAnimationController(AnimationUtils.loadAnimation(this,R.anim.zoom_in));
         //动画方式
         lac.setOrder(LayoutAnimationController.ORDER_RANDOM);
         //加载布局动画
         list.setLayoutAnimation(lac);
         //开始动画
         list.startLayoutAnimation();
         //为列表视图中选中的项添加响应事件
         list.setOnItemClickListener(new OnItemClickListener() {

             @Override
             public void onItemClick(AdapterView<?> parent, View arg1, int pos,
                     long id) {
                 // TODO Auto-generated method stub
                  String result = parent.getItemAtPosition(pos).toString(); //获取选择项的值
                     Toast.makeText(Donghua_List.this, "点击了 "+result, Toast.LENGTH_SHORT).show();//输出选中项消息
             }
         });
     }

 }

Donghua_list.java

 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical" >

     <ListView
         android:id="@+id/listView1"
         android:entries="@array/list"          

         android:layout_width="match_parent"
         android:layout_height="wrap_content" >
     </ListView>

 </LinearLayout>

donghua_layout.xml

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二、Drawable动画（帧动画）

即多张连续的动画顺序播放

核心类：AnimationDrawable

使用步骤：

1、在res下创建drawable文件夹创建资源文件 xx.xml （名字随便取）

有个属性 android:oneshot="false" 判断是否重复播放帧动画，默认false  表示循环播放，true表示只播放一次

 <?xml version="1.0" encoding="utf-8"?>
 <animation-list xmlns:android="http://schemas.android.com/apk/res/android"
     android:oneshot="true"
     >
     <item android:drawable="@drawable/refresh_001" android:duration="" />
     <item android:drawable="@drawable/refresh_002" android:duration="" />
     <item android:drawable="@drawable/refresh_003" android:duration="" />
     <item android:drawable="@drawable/refresh_004" android:duration="" />
     <item android:drawable="@drawable/refresh_005" android:duration="" />
     <item android:drawable="@drawable/refresh_006" android:duration="" />
     <item android:drawable="@drawable/refresh_007" android:duration="" />
     <item android:drawable="@drawable/refresh_008" android:duration="" />
     <item android:drawable="@drawable/refresh_009" android:duration="" />
     <item android:drawable="@drawable/refresh_010" android:duration="" />
     <item android:drawable="@drawable/refresh_011" android:duration="" />
     <item android:drawable="@drawable/refresh_012" android:duration="" />
     <item android:drawable="@drawable/refresh_013" android:duration="" />
     <item android:drawable="@drawable/refresh_014" android:duration="" />
     <item android:drawable="@drawable/refresh_015" android:duration="" />
     <item android:drawable="@drawable/refresh_016" android:duration="" />
     <item android:drawable="@drawable/refresh_017" android:duration="" />
     <item android:drawable="@drawable/refresh_018" android:duration="" />
     <item android:drawable="@drawable/refresh_019" android:duration="" />
     <item android:drawable="@drawable/refresh_020" android:duration="" />
     <item android:drawable="@drawable/refresh_021" android:duration="" />
     <item android:drawable="@drawable/refresh_022" android:duration="" />
     <item android:drawable="@drawable/refresh_023" android:duration="" />
     <item android:drawable="@drawable/refresh_024" android:duration="" />
     <item android:drawable="@drawable/refresh_025" android:duration="" />
     <item android:drawable="@drawable/refresh_026" android:duration="" />
     <item android:drawable="@drawable/refresh_027" android:duration="" />
     <item android:drawable="@drawable/refresh_028" android:duration="" />
     <item android:drawable="@drawable/refresh_029" android:duration="" />
     <item android:drawable="@drawable/refresh_030" android:duration="" />
     <item android:drawable="@drawable/refresh_031" android:duration="" />
     <item android:drawable="@drawable/refresh_032" android:duration="" />
     <item android:drawable="@drawable/refresh_033" android:duration="" />
     <item android:drawable="@drawable/refresh_034" android:duration="" />
     <item android:drawable="@drawable/refresh_035" android:duration="" />
     <item android:drawable="@drawable/refresh_036" android:duration="" />
     <item android:drawable="@drawable/refresh_037" android:duration="" />
     <item android:drawable="@drawable/refresh_038" android:duration="" />
     <item android:drawable="@drawable/refresh_039" android:duration="" />
     <item android:drawable="@drawable/refresh_040" android:duration="" />
     <item android:drawable="@drawable/refresh_041" android:duration="" />
     <item android:drawable="@drawable/refresh_042" android:duration="" />
     <item android:drawable="@drawable/refresh_043" android:duration="" />
     <item android:drawable="@drawable/refresh_044" android:duration="" />
     <item android:drawable="@drawable/refresh_045" android:duration="" />
     <item android:drawable="@drawable/refresh_046" android:duration="" />
     <item android:drawable="@drawable/refresh_047" android:duration="" />
     <item android:drawable="@drawable/refresh_048" android:duration="" />

 </animation-list>

2、布局文件

 <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" >

     <ImageView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:id="@+id/imageView"
         android:background="@drawable/refresh_001"

         />

 </RelativeLayout>

activity_main.xml

3、使用AnimationDrawable 类

（1）找到要显示动画的ImageView控件

imageView = (ImageView) findViewById(R.id.imageView);

（2）给图片控件设置资源

imageView.setBackgroundResource(R.drawable.waiting_anim); //将帧动画资源文件作为View控件背景

（3）获取AnimationDrawable 类对象

AnimationDrawable rocketAnimation = (AnimationDrawable) imageView.getBackground(); //获取背景并强转成为帧动画对象

（4）启动动画

rocketAnimation.start();

效果图：

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动画汇总：

 <?xml version="1.0" encoding="utf-8"?>
 <set xmlns:android="http://schemas.android.com/apk/res/android"
     android:interpolator="@android:anim/decelerate_interpolator" >

   <scale
         android:duration=""
         android:fromXScale="0.1"
         android:fromYScale="0.1"
         android:pivotX="50%"
         android:pivotY="50%"
         android:toXScale="1.0"
         android:toYScale="1.0" />
   <alpha
         android:duration=""
         android:fromAlpha=""
         android:toAlpha="1.0" />
 </set>

zoom_in.xml 从右往左

 <?xml version="1.0" encoding="utf-8"?>
 <set xmlns:android="http://schemas.android.com/apk/res/android">

     <translate android:fromXDelta="-100%p"
         android:toXDelta=""
         android:duration=""/>
     <alpha android:fromAlpha="0.0"
         android:toAlpha="1.0"
          android:duration="" />
 </set>

push_left_in.xml从左往右

 <?xml version="1.0" encoding="utf-8"?>
 <set xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/accelerate_interpolator">
     <translate android:fromYDelta="-100%" android:toXDelta="" android:duration="" />
     <alpha android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="" />
 </set>

slide_top_to_bottom.xml 从上往下

 <?xml version="1.0" encoding="utf-8"?>
 <set xmlns:android="http://schemas.android.com/apk/res/android"
     android:interpolator="@android:anim/decelerate_interpolator">

     <translate android:fromYDelta="100%" android:toXDelta="" android:duration="" />
     <alpha android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="" />
 </set>

slide_bottom_to_top.xml从下往上