Android:帮助动画视图?
我的布局由 EditText 和 WebView 的子类组成:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<EditText android:id="@+id/addressbar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@android:drawable/editbox_background"
/>
<com.android.ibrowser.myWebView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/browser"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
当用户向下滚动 WebView 时,我希望 EditText 向上移动并消失,因此我重写了 WebView 中的 onScrollChanged 方法:
protected void onScrollChanged (int l, int t, int oldl, int oldt){
super.onScrollChanged(l, t, oldl, oldt);
if (addressBar.getBottom() > 0){
AnimationSet animation = new AnimationSet(true);
TranslateAnimation translateAnimation = new TranslateAnimation(0, 0
, -t + oldt, -t + oldt);
translateAnimation.setDuration(100);
animation.addAnimation(translateAnimation);
animation.setFillAfter(true);
animation.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationEnd(Animation arg0) {
addressBar.clearAnimation();
// Change view to state B by modifying its layout params and scroll
}
@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
}
});
addressBar.startAnimation(animation);
}
}
但实现的效果是 EditText 移动到顶部,但立即返回到原来的位置。你怎么认为?
My layout consists of an EditText and a subclass of WebView:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<EditText android:id="@+id/addressbar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@android:drawable/editbox_background"
/>
<com.android.ibrowser.myWebView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/browser"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
When the user scrolls down the WebView I would like the EditText to move up and disappear, So I override the onScrollChanged method in WebView:
protected void onScrollChanged (int l, int t, int oldl, int oldt){
super.onScrollChanged(l, t, oldl, oldt);
if (addressBar.getBottom() > 0){
AnimationSet animation = new AnimationSet(true);
TranslateAnimation translateAnimation = new TranslateAnimation(0, 0
, -t + oldt, -t + oldt);
translateAnimation.setDuration(100);
animation.addAnimation(translateAnimation);
animation.setFillAfter(true);
animation.setAnimationListener(new AnimationListener() {
@Override
public void onAnimationEnd(Animation arg0) {
addressBar.clearAnimation();
// Change view to state B by modifying its layout params and scroll
}
@Override
public void onAnimationRepeat(Animation animation) {
// TODO Auto-generated method stub
}
@Override
public void onAnimationStart(Animation animation) {
// TODO Auto-generated method stub
}
});
addressBar.startAnimation(animation);
}
}
But the effect achieved is that the EditText moves to the top but immediately goes back to its original position. What do you think?
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评论(2)
你必须调用:
Before
并且它有效。
You have to call:
Before
And it works.
尝试添加
translateAnimation.setFillAfter(true)
。Try adding
translateAnimation.setFillAfter(true)
.