IOS--常用控件--UISearchBar和UISearchDisplayController

一、UISearchBar单独使用时，设置样式:

UIView *view =[mySearchBar.subviews objectAtIndex:0];

    //    view.backgroundColor =[UIColor clearColor];

    for (UIView *backview in view.subviews) {

        if ([backview isKindOfClass:NSClassFromString(@"UISearchBarBackground")]) {

            [backview removeFromSuperview];

            break;

        }

    }

二、UISearchBar和UISearchDisplayController结合使用时：

• 关于代理

 // searchResultsDataSource 就是 UITableViewDataSource
 searchDisplayController.searchResultsDataSource = self;
 // searchResultsDelegate 就是 UITableViewDelegate
 searchDisplayController.searchResultsDelegate = self;

别忘了这个：

searchDisplayController.delegate = self;

• 如果想设置 cancelbutton的颜色:

 searchBar.tintColor = [UIColor whiteColor];

• 如果想设置 cancelbutton的字体: 在IOS7下这样设置:

-(void)searchDisplayControllerWillBeginSearch:(UISearchDisplayController *)controller{
 self.searchDisplayController.searchBar.showsCancelButton = YES;
 UIButton *cancelButton;
 UIView *topView = self.searchDisplayController.searchBar.subviews[0];
 for (UIView *subView in topView.subviews) {
 if ([subView isKindOfClass:NSClassFromString(@"UINavigationButton"))]) {
 cancelButton = (UIButton*)subView;
}
}
 if (cancelButton) {
 //Set the new title of the cancel button
 [cancelButton setTitle:@"Annuller"forState:UIControlStateNormal];
}
}

在IOS5/6下这样设置:

- (void)searchDisplayControllerWillBeginSearch:(UISearchDisplayController *)controller{
 self.searchDisplayController.searchBar.showsCancelButton = YES;
 UIButton *cancelButton = nil;
 for (UIView *subView in self.searchDisplayController.searchBar.subviews) {
 if ([subView isKindOfClass:UIButton)]) {
 cancelButton = (UIButton*)subView;
}
}
 if (cancelButton){
 //Set the new title of the cancel button
 [cancelButton setTitle:@"Annuller"forState:UIControlStateNormal];
}
}

• 如果想设置 UISearchBar的背景颜色可以这样设置:

searchDisplayController.searchBar.barTintColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"nav_bg"]];

• 设置UISearchDisplayController是否激活: eg:当我点击 搜索列表 的时候，我想让 searchbar恢复原状，即导航栏也恢复原状时;

[searchDisplayController setActive:NO animated:YES];