使用 scrollTo ListView 时不刷新，但手动滚动时刷新 [英] When using scrollTo ListView does not refresh, but when manually scrolling it refreshes

问题描述

通过根据行号(在 Adapter 的 getView() 中)设置文本框的颜色，我为 ListView 中的不同行设置了不同的颜色.现在，当我手动向上滚动 ListView 时，正确的颜色显示在显示的底部行中.但是当我使用 scrollTo 时，这不会发生，显示的所有行都具有相同的颜色(它们没有更新).

I have different colors for different lines in the ListView, by setting the color of textbox depending on the line number (in getView() of Adapter). Now when I manually scroll the ListView upwards the correct color is displayed in the bottom lines that get revealed. But when I use scrollTo, this doesnot happen, all lines revealed have the same color (they are not updated).

有人遇到过这个问题吗?这似乎令人费解！

Has anybody faced this issue? This seems baffling!

推荐答案

ListView#scrollTo 不滚动列表内容.(这是一个标准的 View 方法，根本不特定于列表:它滚动 ListView 视图本身.)

ListView#scrollTo doesn't scroll the list contents. (It's a standard View method, and not specific to lists at all: it scrolls the ListView view itself.)

相反，尝试使用 ListView#setSelectionFromTop(0, int y) 来滚动.

Instead, try using ListView#setSelectionFromTop(0, int y) to scroll.

API 19+ 有一个 ListView#scrollListBy(int y) 方法，如果你正在为 KitKat 及更高版本编程.

API 19+ has a ListView#scrollListBy(int y) method if you're programming for KitKat and up.

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