iOS修改searchBar右侧cancel按钮属性

1.遍历searchBar子视图

- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar {
searchBar.showsCancelButton = YES;
for (UIView *view in [_searchBar.subviews[0] subviews]) {
if ([view isKindOfClass:[UIButton class]]) {
UIButton *cancel = (UIButton *)view;
[cancel setTitle:@"确定" forState:UIControlStateNormal];
[cancel setTitleColor:WYContentColor forState:UIControlStateNormal];
}
}
}
- (void)searchBarTextDidEndEditing:(UISearchBar *)searchBar
{
searchBar.showsCancelButton = NO;
}

2.setValue: forkey:

UIButton *cancelBtn = [_searchBar valueForKeyPath:@"cancelButton"]; //取出cancelBtn
cancelBtn.enabled = YES;
[cancelBtn setTitle:@"取消" forState:UIControlStateNormal];
[cancelBtn setTitleColor:WYContentColor forState:UIControlStateNormal];
cancelBtn.titleLabel.font = [UIFont systemFontOfSize:15];

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//这种写法解决了上面那种写法在弹出取消按钮时不自然的问题。
        [_searchBar setValue:@"确定" forKey: @"_cancelButtonText"];
        [_searchBar setValue:@"确定" forKey: @"_cancelButtonText"];

3.iOS8也可以这样写

1 2	[[UIBarButtonItem appearanceWhenContainedIn:[UISearchBar class], nil] setTitle:@"确定"]; [[UIBarButtonItem appearanceWhenContainedIn:[UISearchBar class], nil] setTintColor:WYContentColor];

4.iOS9以后可以这样写

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[UIBarButtonItem appearanceWhenContainedInInstancesOfClasses:@[[UISearchBar class]]].title = @"确定";
[UIBarButtonItem appearanceWhenContainedInInstancesOfClasses:@[[UISearchBar class]]].tintColor = WYContentColor;