跳转到新页面使searchBar成为第一响应者的时间点问题
解决思路:延迟设置,使searchBar必定能成为第一响应者
解决方案:当页面出现后再延迟设置(来自ios - Cannot set searchBar as firstResponder - Stack Overflow)
代码:
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
[self performSelector:@selector(showKeyboard) withObject:nil afterDelay:0];
}
- (void)showKeyboard {
[self.searchController.searchBar becomeFirstResponder];
}
需求方案一:修改cancel按钮文字,监听按钮点击事件
效果:自带的cancel按钮点击后会消失,编辑时又出现,个人感觉不怎么样
来源:CocoaChina上的某一篇问答中,具体未查找到,请原作者勿怪
代码:
self.searchController.searchBar.showsCancelButton = YES; //这个必须设置,不然无法达到效果,具体原因未知(猜测是需要设置显示才能拿到按钮)
UIButton *canceLBtn = [self.searchController.searchBar valueForKey:@"cancelButton"];
[canceLBtn setTitle:@"搜索" forState:UIControlStateNormal];
[canceLBtn setTitleColor:[UIColor colorWithRed:0.965 green:0.290 blue:0.608 alpha:1.00] forState:UIControlStateNormal]; //设置颜色自便,也可添加点击事件响应
解决思路:猜测应该是searchBar呈现过程中,颜色变换造成的闪烁
解决方案:去除searchBar中的中间层的UIView(查资料所得,具体地址未记录,原作者请见谅)
代码:
for (UIView *view in self.searchController.searchBar.subviews) {.
//self.searchController.searchBar 更改为自己的searchBar
// for later iOS7.0(include)
if ([view isKindOfClass:NSClassFromString(@"UIView")] && view.subviews.count > 0) {
[[view.subviews objectAtIndex:0] removeFromSuperview];
break;
}
}