setContentOffset仅在动画设置为YES时有效 [英] setContentOffset only works if animated is set to YES

问题描述

我有一个UITableView，我想显示100px下。由于某种原因，这只有在动画设置为YES时才有效。为什么是这个？

I have a UITableView which I would like to be displayed 100px down. For some reason this only works when animated is set to YES. Why is this?

- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    /*[self.tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:1 inSection:0] 
                          atScrollPosition:UITableViewScrollPositionNone 
                                  animated:NO];*/

    /*[self.tableView scrollToRowAtIndexPath:[NSIndexPath indexPathWithIndex:1] 
                                        atScrollPosition:UITableViewScrollPositionNone 
                                        animated:NO];*/

    [self.tableView setContentOffset:CGPointMake(0,100) animated:YES];
}

推荐答案

setFrame而不是setContentOffset？

What if you try to use setFrame instead of setContentOffset?

您应该在viewDidAppear方法中添加此代码：

You should add this code in your viewDidAppear method:

[self.tableView setFrame:CGRectMake(0, 100, 320, 380)];

根据视图中的其他元素（例如导航控制器，工具栏等）将必须将380调整为其他值。

Depending on the other elements you have in your view (e.g. navigation controller, tool bar etc.) you will have to adjust the 380 to something else.

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