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

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <set xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:interpolator="@android:anim/decelerate_interpolator" >
 4
 5   <scale
 6         android:duration="1000"
 7         android:fromXScale="0.1"
 8         android:fromYScale="0.1"
 9         android:pivotX="50%"
10         android:pivotY="50%"
11         android:toXScale="1.0"
12         android:toYScale="1.0" />
13   <alpha
14         android:duration="1000"
15         android:fromAlpha="0"
16         android:toAlpha="1.0" />
17 </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：

 1 package other;
 2
 3 import com.example.allcode.R;
 4
 5 import android.app.Activity;
 6 import android.os.Bundle;
 7 import android.view.View;
 8 import android.view.animation.AnimationUtils;
 9 import android.view.animation.LayoutAnimationController;
10 import android.widget.AdapterView;
11 import android.widget.AdapterView.OnItemClickListener;
12 import android.widget.ListView;
13 import android.widget.Toast;
14
15 public class Donghua_List extends Activity{
16     private ListView list;
17     @Override
18     protected void onCreate(Bundle savedInstanceState) {
19         // TODO Auto-generated method stub
20         super.onCreate(savedInstanceState);
21         setContentView(R.layout.donghua_layout);
22
23
24         list = (ListView) findViewById(R.id.listView1);
25         //布局动画控制器
26         LayoutAnimationController lac = new LayoutAnimationController(AnimationUtils.loadAnimation(this,R.anim.zoom_in));
27         //动画方式
28         lac.setOrder(LayoutAnimationController.ORDER_RANDOM);
29         //加载布局动画
30         list.setLayoutAnimation(lac);
31         //开始动画
32         list.startLayoutAnimation();
33         //为列表视图中选中的项添加响应事件
34         list.setOnItemClickListener(new OnItemClickListener() {
35
36             @Override
37             public void onItemClick(AdapterView<?> parent, View arg1, int pos,
38                     long id) {
39                 // TODO Auto-generated method stub
40                  String result = parent.getItemAtPosition(pos).toString(); //获取选择项的值
41                     Toast.makeText(Donghua_List.this, "点击了 "+result, Toast.LENGTH_SHORT).show();//输出选中项消息
42             }
43         });
44     }
45
46
47
48 }

Donghua_list.java

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:orientation="vertical" >
 6
 7     <ListView
 8         android:id="@+id/listView1"
 9         android:entries="@array/list"
10
11         android:layout_width="match_parent"
12         android:layout_height="wrap_content" >
13     </ListView>
14
15 </LinearLayout>

donghua_layout.xml

动画汇总：

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <set xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:interpolator="@android:anim/decelerate_interpolator" >
 4
 5   <scale
 6         android:duration="1000"
 7         android:fromXScale="0.1"
 8         android:fromYScale="0.1"
 9         android:pivotX="50%"
10         android:pivotY="50%"
11         android:toXScale="1.0"
12         android:toYScale="1.0" />
13   <alpha
14         android:duration="1000"
15         android:fromAlpha="0"
16         android:toAlpha="1.0" />
17 </set>

zoom_in.xml 从右往左

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <set xmlns:android="http://schemas.android.com/apk/res/android">
 3
 4     <translate android:fromXDelta="-100%p"
 5         android:toXDelta="0"
 6         android:duration="300"/>
 7     <alpha android:fromAlpha="0.0"
 8         android:toAlpha="1.0"
 9          android:duration="300" />
10 </set>

push_left_in.xml从左往右

1 <?xml version="1.0" encoding="utf-8"?>
2 <set xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/accelerate_interpolator">
3     <translate android:fromYDelta="-100%" android:toXDelta="0" android:duration="300" />
4     <alpha android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="300" />
5 </set>

slide_top_to_bottom.xml 从上往下

1 <?xml version="1.0" encoding="utf-8"?>
2 <set xmlns:android="http://schemas.android.com/apk/res/android"
3     android:interpolator="@android:anim/decelerate_interpolator">
4
5     <translate android:fromYDelta="100%" android:toXDelta="0" android:duration="300" />
6     <alpha android:fromAlpha="0.0" android:toAlpha="1.0" android:duration="300" />
7 </set>

slide_bottom_to_top.xml从下往上