GridView控件通过滚动一行 [英] GridView Scroll By one row

问题描述

你好我是执行一个GridView和我有麻烦使得它向下滚动1行，在每滚动事件的时候。

Hi i am implementing a gridView and i have trouble making it scroll down 1 row at a time with every scroll event.

我的网格具有1行项目的高度（项目高度75dp）。我不想滚动，以留在一排的中间。

my grid has a height of 1 row item (items height is 75dp). i don't want scrolling to be left in a middle of a row.

有没有办法，我可以截获并修改的滚动距离，使其只返回固定值例：+ -75dp

is there a way i can intercept and modify the scroll distance so that it only returns fixed value ex: +-75dp.

我会AP preciate任何帮助或建议，您可以给我。 TNX

i would appreciate any help or suggestions you can give me. tnx

推荐答案

APIv8有新的功能，称为smoothScrollBy（INT距离，INT持续时间）[1]

APIv8 has new function, called smoothScrollBy(int distance, int duration)[1]

我想你应该抓住一切滚动事件和放大器;实现自己的方法来滚动视图。 如果你想通过75dp滚动，只需将它转换为像素和放大器;使用以上功能。

i think you should catch all scroll events & implement own method to scroll view. if you want to scroll by 75dp, just convert it to pixels & use function above.

float density = getContext().getResources().getDisplayMetrics().density;
int scrollBy = (int)(density * 75);
smoothScrollBy(scrollBy, 0);

但将是很好，从你的GridView来计算，而不是使用一些常量的值（比如75dp）scrollBy，

But would be nice to calculate scrollBy from your GridView, instead of using some constant value (like 75dp)

[1]：http://developer.android.com/reference/android/widget/AbsListView.html#smoothScrollBy(int, INT）

[1]: http://developer.android.com/reference/android/widget/AbsListView.html#smoothScrollBy(int, int)

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