前言

記錄下常用的屬性，方便查閱

正文

• 設定取消按鈕文字

if (IOS9) {
        [[UIBarButtonItem appearanceWhenContainedInInstancesOfClasses:@[[BESearchUserByNameVC class]]] setTitle:BluedLocalizedStringWithKey(@"gjp_cancel")];
} else {
        [[UIBarButtonItem appearanceWhenContainedIn: [BESearchUserByNameVC class], nil] setTitle:BluedLocalizedStringWithKey(@"gjp_cancel")];
}

• 設定取消按鈕顏色

searchBar.tintColor = [UIColor gjw_colorWithHex:0x616aff];

• 設定搜尋框的背景，不是整個searchBar的背景

 [searchBar setSearchFieldBackgroundImage:[UIImage imageNamed:@"common_searchBar_bg"] forState:UIControlStateNormal];

• 替換系統的搜尋圖示

[searchBar setImage:[UIImage imageNamed:@"common_searchBar_icon"] forSearchBarIcon:UISearchBarIconSearch state:UIControlStateNormal];

• 設定整個searchBar的背景

searchBar.backgroundImage = [UIImage gjw_imageWithColor:[UIColor gjw_colorWithHex:0xf4f4f4] size:self.searchController.searchBar.bounds.size];

• 獲取搜尋框的placeHoder，修改字型，顏色等

UITextField *searchField = [searchBar valueForKey:@"_searchField"];
[searchField setValue:[UIColor gjw_colorWithHex:0x848bff] forKeyPath:@"_placeholderLabel.textColor"];
[searchField setValue:TEXT_FONT(14) forKeyPath:@"_placeholderLabel.font"];

• 顯式設定尺寸。在iOS8，iPhone4上使用UISearchController的預設searchBar作為UITableView的tableHeaderView時，無法顯示，估計是個系統bug

searchBar.frame = CGRectMake(0, 0, SCREEN_WIDTH, 44);

效果圖

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