Android - 项目中具有不同大小图像的 ListView 使 ListView 混蛋

Question

How do I make listview run smoothly when the items have images with various heights? Using recycling and calculating the ImageView dimension in the getView when I go up the list jerks horribly and skips parts Thank you

Answer 1

If you are using Custom Listview With fixed item Height at that time for ImageView you need to use :

<ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:adjustViewBounds="true"
        android:scaleType="fitXY"
        android:src="@drawable/ic_launcher" >

Using this Image which is any size can be Fit to listView Item size

android:adjustViewBounds="true"
android:scaleType="fitXY" 

Image Will be Fixed

Answer 2

Don't change the view size on the getView() method. Instead override the Adapter methods getViewTypeCount() and getItemViewType() .

If you use these methods right, returning a different number for different size views, Android will recycle the right view for you on getView() . This way the list is measured correct and the list will scroll smoothly.