如何淡化可滚动 TextView 的底部边缘? [英] How to fade bottom edge of a scrollable TextView?

问题描述

我有一个可滚动的文本视图，我想淡出底部边缘.我试过了:

I have a scrollable textview that I want to fade the bottom edge. I tried:

android:requiredFadingEdge="vertical"

但这只会使顶部褪色.如何淡化底部而不是顶部?

but that only fades the top. How do I fade the bottom instead of the top?

推荐答案

如果您的可滚动 TextView 恰好是通过将其包装在 ScrollView 中实现的，那么只需添加android:requiresFadingEdge 和 android:fadingEdgeLength 用于 ScrollView.

If your scrollable TextView happens to be implemented by wrapping it in a ScrollView, then quite simply add android:requiresFadingEdge and android:fadingEdgeLength for the ScrollView.

<ScrollView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:requiresFadingEdge="vertical"
    android:fadingEdgeLength="@dimen/spacing_small">    

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:scrollbars="vertical" />

</ScrollView>

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