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