今天因为需求原因,需要用到搜索控件;之前一直没有用到过这个控件,所以去百度了一下,找到一篇可以说很齐全的资料,感谢这位作者。
然而,我并没有找到可以更改字体大小的属性或方法,希望有知道的告诉我一声,谢谢!
原文地址:http://my.oschina.net/u/2340880/blog/509756
初始化:UISearchBar继承于UIView,我们可以像创建View那样创建searchBar
UISearchBar *bar = [[UISearchBar alloc]initWithFrame:CGRectMake(, , , )]; [self.view addSubview:bar];
// 这个属性可以设置searchBar的搜索 @property(nonatomic) UIBarStyle barStyle; // 枚举如下: typedef NS_ENUM(NSInteger, UIBarStyle) { UIBarStyleDefault = ,//默认风格 白色搜索框,多出的背景为灰色 UIBarStyleBlack = ,//黑色风格,黑色的搜索框 //下面两个枚举已经被禁用,作用和黑色风格一样 UIBarStyleBlackOpaque = , // Deprecated. Use UIBarStyleBlack UIBarStyleBlackTranslucent = , // Deprecated. Use UIBarStyleBlack and set the translucent property to YES };
设置搜索框中的文字
@property(nonatomic,copy) NSString *text;
这个属性的官方解释是在搜索框顶部显示一行文字,其实就是背景文字,上图说明:
@property(nonatomic,copy) NSString *prompt;
bar.prompt = @"搜索框"; bar.text="
效果如下:
和其他文本输入控件的placeholder相同,在输入文字时就会消失
@property(nonatomic,copy) NSString *placeholder;
是否在搜索框右侧显示一个图书的按钮,默认为NO,YES的效果如下:
@property(nonatomic) BOOL showsBookmarkButton;
是否显示取消按钮,默认为NO,YES的效果如下:
@property(nonatomic) BOOL showsCancelButton;
是否显示搜索结果按钮,默认为NO,YES效果如下:
@property(nonatomic) BOOL showsSearchResultsButton;
设置搜索结果按钮的选中状态
@property(nonatomic, getter=isSearchResultsButtonSelected) BOOL searchResultsButtonSelected ;
设置显示取消按钮
- (void)setShowsCancelButton:(BOOL)showsCancelButton animated:(BOOL)animated;
设置这个颜色值会影响搜索框中的光标的颜色
@property(nonatomic,retain) UIColor *tintColor;
设置这个颜色会影响搜索框的背景颜色
@property(nonatomic,retain) UIColor *barTintColor;
设置搜索框整体的风格
@property (nonatomic) UISearchBarStyle searchBarStyle;
枚举如下:
typedef NS_ENUM(NSUInteger, UISearchBarStyle) { UISearchBarStyleDefault, // currently UISearchBarStyleProminent UISearchBarStyleProminent, // 显示背景 UISearchBarStyleMinimal // 不显示背景 } NS_ENUM_AVAILABLE_IOS(7_0);
设置是否半透明
@property(nonatomic,assign,getter=isTranslucent) BOOL translucent;
是否显示搜索栏的附件选择按钮视图,要想显示这个视图,首先要将这个属性设置为YES,之后给按钮数组中添加按钮,使用下面这个属性:
@property(nonatomic) BOOL showsScopeBar ;
设置选择按钮视图的按钮标题
@property(nonatomic,copy) NSArray *scopeButtonTitles ; @property(nonatomic) NSInteger selectedScopeButtonIndex;
设置一个默认的选中按钮
bar = [[UISearchBar alloc]initWithFrame:CGRectMake(, , , )]; bar.showsScopeBar=YES; bar.scopeButtonTitles = @["];
键盘的附属视图
@property (nonatomic, readwrite, retain) UIView *inputAccessoryView;
设置搜索框的背景图案
@property(nonatomic,retain) UIImage *backgroundImage;
设置附属选择按钮视图的背景图案
@property(nonatomic,retain) UIImage *scopeBarBackgroundImage;
这一对方法可以设置和获取某个状态枚举下的搜索框的背景图案
- (void)setBackgroundImage:(UIImage *)backgroundImage forBarPosition:(UIBarPosition)barPosition barMetrics:(UIBarMetrics)barMetrics ;
- (UIImage *)backgroundImageForBarPosition:(UIBarPosition)barPosition barMetrics:(UIBarMetrics)barMetrics
这一对方法用于设置和获取搜索框中TextField的背景图案
- (void)setSearchFieldBackgroundImage:(UIImage *)backgroundImage forState:(UIControlState)state;
- (UIImage *)searchFieldBackgroundImageForState:(UIControlState)state;
这一对方法用于获取和设置搜索栏icon图片的图案
- (void)setImage:(UIImage *)iconImage forSearchBarIcon:(UISearchBarIcon)icon state:(UIControlState)state ;
- (UIImage *)imageForSearchBarIcon:(UISearchBarIcon)icon state:(UIControlState)state ;
这一对方法用于设置和获取搜索框的附加选择按钮视图的背景图案
- (void)setScopeBarButtonBackgroundImage:(UIImage *)backgroundImage forState:(UIControlState)state;
- (UIImage *)scopeBarButtonBackgroundImageForState:(UIControlState)state;
这一对方法用于获取和设置附加选择按钮视图中切换按钮的图案
- (void)setScopeBarButtonDividerImage:(UIImage *)dividerImage forLeftSegmentState:(UIControlState)leftState rightSegmentState:(UIControlState)rightState;
- (UIImage *)scopeBarButtonDividerImageForLeftSegmentState:(UIControlState)leftState rightSegmentState:(UIControlState)rightState;
这一对方法用于设置和获取切换按钮标题文字的字体属性字典
- (void)setScopeBarButtonTitleTextAttributes:(NSDictionary *)attributes forState:(UIControlState)state;
- (NSDictionary *)scopeBarButtonTitleTextAttributesForState:(UIControlState)state;
搜索文字在搜索框中的位置偏移
@property(nonatomic) UIOffset searchFieldBackgroundPositionAdjustment;
textfield在搜索框中的位置偏移
@property(nonatomic) UIOffset searchTextPositionAdjustment;
设置搜索栏中图片的位置偏移
- (void)setPositionAdjustment:(UIOffset)adjustment forSearchBarIcon:(UISearchBarIcon)icon;
- (UIOffset)positionAdjustmentForSearchBarIcon:(UISearchBarIcon)icon;
图片的枚举如下:
typedef NS_ENUM(NSInteger, UISearchBarIcon) { UISearchBarIconSearch, //搜索图标 UISearchBarIconClear, // 清除图标 UISearchBarIconBookmark, // 书本图标 UISearchBarIconResultsList, // 结果列表图标 };
下面是搜索框控件的一些代理方法:
将要开始编辑时的回调,返回为NO,则不能编辑
- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar;
已经开始编辑时的回调
- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar;
将要结束编辑时的回调
- (BOOL)searchBarShouldEndEditing:(UISearchBar *)searchBar;
已经结束编辑的回调
- (void)searchBarTextDidEndEditing:(UISearchBar *)searchBar;
编辑文字改变的回调
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText;
编辑文字改变前的回调,返回NO则不能加入新的编辑文字
- (BOOL)searchBar:(UISearchBar *)searchBar shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text ;
搜索按钮点击的回调
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar;
书本按钮点击的回调
- (void)searchBarBookmarkButtonClicked:(UISearchBar *)searchBar;
取消按钮点击的回调
- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar;
搜索结果按钮点击的回调
- (void)searchBarResultsListButtonClicked:(UISearchBar *)searchBar;
搜索栏的附加视图中切换按钮触发的回调
- (void)searchBar:(UISearchBar *)searchBar selectedScopeButtonIndexDidChange:(NSInteger)selectedScope;
2016-07-24