设置 ScollView 滚动条不消失

    <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]