First of all, we need to introduce the following layoutanimationcontroller:
* 1.LayoutAnimationController is used for a layout inside the control, or a viewgroup
* Inside the control set animation effect (that is, the entire layout)
* 2. Each control has the same animation effect
* 3. The animation effects of these controls are displayed in different implementations
* 4.LayoutAnimationController can be set in an XML file or set in code
In this paper, the two methods for implementing Layoutanimationcontroller are introduced respectively:
One, implement in XML file
The steps are shown in the following illustration:
Here is an example of how to implement this:
An example of an implementation is to click on the "Test" button, which shows an animated view showing the screenshot as follows:
the specific implementation process is as follows :
Requires two animated XML files:
1.list_item_layout
Copy Code code as follows:
<layoutanimation xmlns:android= "Http://schemas.android.com/apk/res/android"
android:animation= "@anim/list_item_alpha"
Android:animationorder= "Normal"
android:delay= "0.8"/>
2.list_item_alpha
Copy Code code as follows:
<set xmlns:android= "Http://schemas.android.com/apk/res/android" >
<alpha
Android:fromalpha= "0.0"
Android:toalpha= "1.0"
Android:duration= "2000"
/>
</set>
3. The following instructions need to be added to the ListView：
Copy Code code as follows:
android:layoutanimation= "@anim/list_item_layout"
The specific implementation code is as follows:
Copy Code code as follows:
public class Layoutanimation_activity extends activity {
Private button button;
Private Button button2;
Private ListView ListView;
private static final string[] strings={"Brucezhang", "Alhpa", "Translate", "Blanklin", "Rotate",
"Greenfrank"};
@Override
protected void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Setcontentview (R.layout.activity_layout_animation_);
button= (Button) Findviewbyid (R.id.button);
Button2= (Button) Findviewbyid (R.id.button2);
listview= (ListView) Findviewbyid (R.id.listview);
Final arrayadapter<string> adapter=new arrayadapter<string> (This, r.layout.item_list, STRINGS);
Button.setonclicklistener (New Onclicklistener () {
@Override
public void OnClick (View v) {
TODO auto-generated Method Stub
Listview.setadapter (adapter);
}
});
Button2.setonclicklistener (New Onclicklistener () {
@Override
public void OnClick (View v) {
TODO auto-generated Method Stub
Listview.setadapter (NULL);
}
});
}
@Override
public boolean Oncreateoptionsmenu (Menu menu) {
Inflate the menu; This adds items to the action bar if it is present.
Getmenuinflater (). Inflate (R.menu.activity_layout_animation_, menu);
return true;
}
}
Two, implement Layoutanimationcontroller in Java code
The steps to implement are as follows:
The code used in this example is as follows :
Copy Code code as follows:
Animation animation=animationutils.loadanimation (Layoutanimation_activity.this,
R.anim.list_item_alpha);
Layoutanimationcontroller lacontroller=new Layoutanimationcontroller (animation);
Lacontroller.setorder (Layoutanimationcontroller.order_normal);
Listview.setlayoutanimation (Lacontroller);
