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   <alpha14         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     @Override18     protected void onCreate(Bundle savedInstanceState) {19         // TODO Auto-generated method stub20         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             @Override37             public void onItemClick(AdapterView<?> parent, View arg1, int pos,38                     long id) {39                 // TODO Auto-generated method stub40                  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   <alpha14         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

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