如何以编程方式更改Android ListView的布局边距

Question

I have defined a List View in xml as below

     <ListView android:id="@+id/mylist" 
           android:layout_width="fill_parent" 
           android:layout_height="wrap_content"
            android:cacheColorHint="#00000000"
           android:layout_weight="1"
           android:layout_marginTop="95dip"/>

And i need to re-define the layout margin upon some result in my programe ,how i can achieve this

Answer 1

More simply, you may be able to modify the existing MarginLayoutParams instance to modify the margin:

ViewGroup.MarginLayoutParams mlp = (ViewGroup.MarginLayoutParams) mListView
        .getLayoutParams();

mlp.setMargins(adjustmentPxs, 0, 0, 0);

break;

Answer 2

如果你在Activity中获得了ListView对象，你可以使用方法setLayoutParams（） ，传入android.view.ViewGroup.MarginLayoutParams的实例。