<ScrollView android:layout_width="match_parent" android:layout_height="match_parent" android:fadeScrollbars="false" > <TextView android:id="@+id/txtResult" android:layout_width="match_parent" android:layout_height="wrap_content" /> </ScrollView>
android:fadeScrollbars="true"
Defines whether to fade out scrollbars when they are not in use. [boolean]
原文：http://www.cnblogs.com/seeker-yao/p/6146021.html