ListView 条目加载上滑下滑首尾缩放动画实现
要实现这个效果,只需要再适配器getView之前,给每个条目的view设置相应的动画即可。
首先需要2个动画的xml文件。
在res下新建anim文件夹:(res/anim)
第一个动画xml文件:
up_from_bottom.xml
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:shareInterpolator="@android:anim/decelerate_interpolator"> <translate android:fromXDelta="0%" android:toXDelta="0%" android:fromYDelta="100%" android:toYDelta="0%" android:duration="400" /> </set>
down_from_top.xml
<?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android" android:shareInterpolator="@android:anim/decelerate_interpolator"> <translate android:fromXDelta="0%" android:toXDelta="0%" android:fromYDelta="-100%" android:toYDelta="0%" android:duration="400" /> </set>
在listview的适配器中使用定义的动画:
代码如下:
private int lastPosition = -1; @Override public View getView(int position, View convertView, ViewGroup parent) { //Load your view, populate it, etc... View view = ...; Animation animation = AnimationUtils.loadAnimation(getContext(), (position > lastPosition) ? R.anim.up_from_bottom : R.anim.down_from_top); view.startAnimation(animation); lastPosition = position; return view; }
参考: http://kylewbanks.com/blog/Implementing-Google-Plus-Style-ListView-Animations-on-Android
If you are interested the animation,
you can check out the full source on GitHub, or download the project and try it out.
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