UISearchBarController 常见问题

y> 页面出现键盘弹出

感谢http://www.jianshu.com/p/742d34f064ee

1. 签协议
   @interface NAFirstSearchDetailViewController ()< UISearchControllerDelegate>

2. 在创建searchController的地方指定代理人

    _searchController.delegate = self;
   

3. 在视图已经出现时设为激活状态, 不能在视图即将出现时

 #pragma mark 视图已经出现
- (void)viewDidAppear:(BOOL)animated{
    [super viewDidAppear:animated];

    //第二步
    [_searchController setActive:YES];
}

4. 实现代理方法, 动画一定要加

 #pragma mark UISearchControllerDelegate
 //第三步
 - (void)didPresentSearchController:(UISearchController *)searchController {
   [UIView animateWithDuration:0.1 animations:^{} completion:^(BOOL finished) {
       [_searchController.searchBar becomeFirstResponder];
    }];
   }

5. 视图消失要把激活状态设置为NO, 才能回收键盘, 并确保下次进入页面键盘可以弹出, 一定要在即将消失的时候

#pragma mark - 视图即将消失
- (void)viewWillDisappear:(BOOL)animated{
    [super viewWillDisappear:animated];

    //不取消激活下次再进来就不会弹出键盘
    [_searchController setActive:NO];
}

防止pop回来的时候闪一下

感谢 http://blog.csdn.net/x567851326/article/details/51788002

 [[[[_searchController.searchBar.subviews objectAtIndex:0] subviews] objectAtIndex:0] removeFromSuperview];
[_searchController.searchBar setBackgroundColor:[UIColor clearColor]];

不想让键盘弹出, 且在点击searchbar的时候跳转到新页面

1. 签代理

@interface NAFirstPageViewController ()<UISearchBarDelegate>

2. 指定代理人

  _searchController.searchBar.delegate = self;

3. 实现代理方法

  #pragma mark - searchbarDelegate, 开始编辑时不弹出键盘, 并跳转页面
- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar{
    [self.navigationController pushViewController:self.searchVc animated:YES];
    return NO;
}

修改光标颜色和"取消"按钮颜色

//光标和取消按钮字体颜色
_searchController.searchBar.tintColor = kRGBColor(38, 164, 255);
//"取消"按钮颜色
[[UIBarButtonItem appearanceWhenContainedIn: [UISearchBar class], nil] setTintColor:[UIColor whiteColor]];
//取消按钮内容
[[UIBarButtonItem appearanceWhenContainedIn: [UISearchBar class], nil] setTitle:@"取消"];

要是上面方法被废弃了就用这个

[[[_searchController.searchBar.subviews objectAtIndex:0].subviews objectAtIndex:1] setTintColor:kRGBColor(0, 0, 240)];

修改"取消按钮"字体大小
感谢http://www.jianshu.com/p/63218245ea76

_searchController.searchBar.showsCancelButton = YES;
_searchController.searchBar.delegate = self;

必须使用searchBarDelegate

#pragma mark - UISearchBarDelegate
- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar{
    NSLog(@"start!");
    searchBar.showsCancelButton = YES;
    NSLog(@"%@",self.searchController.searchBar.subviews[0].subviews);
    for (UIView *view in     self.searchController.searchBar.subviews[0].subviews) {
    if ([view isKindOfClass:[UIButton class]]) {
            UIButton *cancelBtn = (UIButton *)view;
            [cancelBtn setTitle:@"取消" forState:UIControlStateNormal];
         [cancelBtn setTitleColor:APP_GLOBAL_BUTTON_COLOR forState:UIControlStateNormal];
        }
    }
}