Android:帮助制作动画视图?

时间:2011-02-12 14:02:07

标签: android webview translate-animation

我的布局包含一个EditText和一个WebView的子类:

    <?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,所以我在WebView中覆盖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其原始位置。你怎么看?

2 个答案:

答案 0 :(得分:2)

你必须致电:

translateAnimation.setFillEnabled(true); 

translateAnimation.setFillAfter(true);  

它有效。

答案 1 :(得分:0)

尝试添加translateAnimation.setFillAfter(true)