如何在Android中的gridView的滚动侦听器上使按钮可见/消失 [英] How to make a Button Visible/Gone on scroll listener of gridView in Android

问题描述

我在框架布局中有一个自定义gridView和一个按钮.代码在后面

I have a Custom gridView and a Button in Frame Layout. Code is following

<RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
     <GridView
        android:id="@+id/gridview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentBottom="true"
        android:layout_below="@+id/Rel_Spinner"
        android:layout_centerHorizontal="true"
        android:gravity="center"
        android:numColumns="auto_fit"
        android:stretchMode="columnWidth" >
    </GridView>


    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true" >


        <Button
            android:id="@+id/btnLoadMore"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Load More" />

    </FrameLayout>

</RelativeLayout>

它从适配器加载图像和文本.如图所示

It loads images and Text from adapter. as shown in figure

现在我想要的是，当到达GridView Scroll的最终位置时，Button应该出现，否则应该再次消失.如图所示.

Now I want is that the Button should appear when the final position of the GridView Scroll is reached other wise it should again disappear. as shown in figure.

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