取消GridView/ListView item被点击时的效果

gridView.setSelector(new ColorDrawable(Color.TRANSPARENT));
listView.setSelector(new ColorDrawable(Color.TRANSPARENT))；

<GridView
android:listSelector="@android:color/transparent"
android:numColumns="auto_fit"
android:columnWidth="50dp"
android:stretchMode="spacingWidth"
android:layout_weight="1.0"
android:layout_height="0dip"
android:layout_width="match_parent"/>

<ListView
android:listSelector="@android:color/transparent"
android:layout_height="match_parent"
android:layout_width="match_parent"/>