3
self.refreshControl = [[UIRefreshControl alloc]init];
[self.objDiscussiontopic addSubview:self.refreshControl];
[self.refreshControl addTarget:self action:@selector(refreshTable) forControlEvents:UIControlEventValueChanged];
- (void)refreshTable {
//TODO: refresh your data
[self.refreshControl endRefreshing];
}
这是我用来在我的滚动视图中添加刷新控制器的代码。 但是，当我拉下滚动视图的刷新控制没有显示，目标方法也不是所谓的？UIScrollview拉刷新不起作用
我正在寻找这一段时间，但没有得到任何正确的答案。
一个件事滚动视图有VFL约束一些像这样的事情：
//Pin scrolview to Parent View
[VFLConstraint allignSubViewViewHorizentallyWithSubView:self.objDiscussiontopic OverSuperView:[self view]];
[VFLConstraint allignSubViewViewVerticallyWithSubView:self.objDiscussiontopic OverSuperView:[self view] WithTopPading:[CommonFunction convertIphone6ToIphone5:0] AndBotomPading:[CommonFunction convertIphone6ToIphone5:57]];
+ (void)allignSubViewViewHorizentallyWithSubView:(UIView *)subView OverSuperView:(UIView *)superView{
NSDictionary *viewDict= NSDictionaryOfVariableBindings(subView);
[superView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[subView]|" options:0 metrics: 0 views:viewDict]];
}
+ (void)allignSubViewViewVerticallyWithSubView:(UIView *)subView OverSuperView:(UIView *)superView WithTopPading:(float)topPading AndBotomPading:(float)bottomPading{
NSDictionary *viewDict= NSDictionaryOfVariableBindings(subView);
NSDictionary *metrics=[NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithFloat:topPading],@"topPading",[NSNumber numberWithFloat:bottomPading],@"bottomPading", nil];
[superView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-topPading-[subView]-bottomPading-|" options:0 metrics: metrics views:viewDict]];
}