我有一个具有listview和imagebutton的布局:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingTop="4px"
android:background="@color/bgColor">
<ImageButton
android:id="@+id/imageButton"
android:src="@drawable/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="0dp"
android:layout_alignParentBottom="true"/>
<ListView
android:layout_above="@+id/imageButton"
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:drawSelectorOnTop="false"
android:background = "@drawable/list_bg"
android:divider="@drawable/grade"
android:dividerHeight ="1px"
android:cacheColorHint="#00000000"
android:fastScrollEnabled= "true"
android:scrollingCache ="true"
android:smoothScrollbar="false"
>
</ListView>
</RelativeLayout>
基于用户的选择,我正在使用它来隐藏或显示图像按钮:
ImageButton myButton = (ImageButton) findViewById(R.id.imageButton);
myButton.setVisibility(View.GONE);
该代码工作正常,但是我想为隐藏/显示过程设置动画。如何达到此效果?
最佳答案
是的,编写您自己的动画监听器,并将其设置为如下所示的动画:
public class MyAnimationListener implements AnimationListener {
private ImageButton mImgButton;
public MyAnimationListener(ImageButton imgButton) {
mImgButton = imgButton;
}
@Override
public void onAnimationEnd(Animation animation) {
mImgButton.setVisibility(View.GONE);
}
@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto - generated method stub
}
@Override
public void onAnimationStart(Animation animation) {
// TODO Auto - generated method stub
}
}
然后使用以下命令将其设置为动画:
animation.setAnimationListener(new MyAnimationListener(myButton);
而已。