iOS App开发中UISearchBar搜索栏组件的基本用法整理

基本属性

代码如下:

@UISearchBar search = [[UISearchBar alloc]initWithFrame:CGRectMake(0,44,320,120)];

pragma mark -基本设置


代码如下:

//控件的样式 默认--0白色,1是黑色风格

/*
UIBarStyleDefault          = 0,
UIBarStyleBlack            = 1,
search.barStyle =UIBarStyleDefault;
/*

UISearchBarStyleDefault,
// currently UISearchBarStyleProminent

UISearchBarStyleProminent, // used my Mail, Messages and Contacts(provides no default background color or image but will display one if customized as such系统提供的颜色和图片无效,自定制有效)

UISearchBarStyleMinimal    // used by Calendar, Notes and Music

*/

search.searchBarStyle =UISearchBarStyleDefault;

// 控件上面的显示的文字

search.text =@"HMT";

// 显示在顶部的单行文字，通常作为一个提示行

search.prompt =@"DOTA";

// 半透明的提示文字，输入搜索内容消失

search.placeholder =@"请输入要搜索的词语";

// bar的颜色(具有渐变效果)搜索栏闪动条和选择栏边框,取消按钮和选择栏被选中时候都会变成设置的颜色

search.tintColor = [UIColor redColor];

// 除搜索栏框框,就像贴了一张镂空了搜索栏的颜色贴图,不影响其他任何设置的颜色

search.barTintColor = [UIColor whiteColor];

// 指定控件是否会有透视效果

search.translucent =YES;

// 设置在什么的情况下自动大写

/*

UITextAutocapitalizationTypeNone,             //除非自己点击大写,否则永不大写

UITextAutocapitalizationTypeWords,            //以单词来区分,每个单词首字母大写

UITextAutocapitalizationTypeSentences,        //以句子来区分

UITextAutocapitalizationTypeAllCharacters,    //所有字母全部大写

*/

search.autocapitalizationType =UITextAutocapitalizationTypeNone;

// 对于文本对象自动校正风格(额,我也不知道有什么用)

/*

UITextAutocorrectionTypeDefault,

UITextAutocorrectionTypeNo,

UITextAutocorrectionTypeYes,

*/

search.autocorrectionType =UITextAutocorrectionTypeNo;

// 键盘的样式(具体可参考文章UITableView详解(一))

search.keyboardType =UIKeyboardTypeNumberPad;

pragma mark - 设置搜索栏右边按钮图标(UISearchBarIcon)


代码如下:

// 是否在控件的右端显示一个书的按钮

search.showsBookmarkButton =YES;

// 是否显示cancel按钮(静态)

//search.showsCancelButton = YES;

// 是否显示cancel按钮(带有动画效果)

[search setShowsCancelButton:YES animated:YES];

// 是否在控件的右端显示搜索结果按钮(图形是一个圆里面放着一个向下的箭头)

search.showsSearchResultsButton =YES;

// 搜索结果按钮是否被选中

search.showsSearchResultsButton =YES;

// 设置控件的右端显示搜索结果按钮处 --- 可用图片替换掉

[search setImage:[UIImage imageNamed:@"qiyi.png"]forSearchBarIcon:UISearchBarIconResultsList state:UIControlStateNormal];

pragma mark - 搜索栏下部选择栏


代码如下:

// 搜索栏下部的选择栏，数组里面的内容是按钮的标题

search.scopeButtonTitles = [NSArray arrayWithObjects:@"iOS",@"Android",@"iPhone",nil];

// 进入界面,搜索栏下部的默认选择栏按钮的索引(也就是第一出现在哪个选择栏)

search.selectedScopeButtonIndex =2;

// 控制搜索栏下部的选择栏是否显示出来(显示的话,就要修改search的frame,不显示的话80就够了)

search.showsScopeBar =YES;

pragma mark - 设置控件图片


代码如下:

// 设置控件背景图片

search.backgroundImage = [UIImage imageNamed:@"qiyi.png"];

// 设置搜索栏下部背景图片

search.scopeBarBackgroundImage = [UIImage imageNamed:@"qiyi.png"];

pragma mark - 协议UISearchBarDelegate

(不解释了,看名字,已经很明显了)

代码如下:

@编辑文本

// UISearchBar得到焦点并开始编辑时，执行该方法

(BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar;           // return NO to not become first responder

(void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar{          // called when text starts editing

[searchBar setShowsCancelButton:YES animated:YES];   //  动画显示取消按钮

}

(BOOL)searchBarShouldEndEditing:(UISearchBar *)searchBar;       // return NO to not resign first responder

(void)searchBarTextDidEndEditing:(UISearchBar *)searchBar;            // called when text ends editing

(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{   // called when text changes (including clear)

@ 当搜索内容变化时，执行该方法。很有用，可以实现时实搜索

}

代码如下:

(BOOL)searchBar:(UISearchBar *)searchBar shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)textNS_AVAILABLE_IOS(3_0);                 // called before text changes
@按钮点击

(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar;     // called when keyboard search button pressed

(void)searchBarBookmarkButtonClicked:(UISearchBar *)searchBar;        // called when bookmark button pressed

(void)searchBarCancelButtonClicked:(UISearchBar *) searchBar{           // called when cancel button pressed

[searchBar setShowsCancelButton:NO animated:NO];    // 取消按钮回收

[searchBar resignFirstResponder];                                // 取消第一响应值,键盘回收,搜索结束

}

(void)searchBarResultsListButtonClicked:(UISearchBar *)searchBarNS_AVAILABLE_IOS(3_2);// called when search results button pressed

(void)searchBar:(UISearchBar *)searchBar selectedScopeButtonIndexDidChange:(NSInteger)selectedScopeNS_AVAILABLE_IOS(3_0);

数据刷选类:NSPredicate


代码如下:

@假设: NSArray array = [[NSArray alloc]initWithObjects:@"luna",@"moon",@"",@"lion",@"coco", nil];

// 数据的处理主要发生在这个方法中

(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{

// 方法一:([c]不区分大小写[d]不区分发音符号即没有重音符号[cd]既不区分大小写，也不区分发音符号。)

NSPredicate * predicate = [NSPredicate predicateWithFormat:@"SELF CONTAINS [cd] %@",searchText];

//  数组提供的快速遍历,返回的类型是NSArray

NSLog(@"%@",[ _array filteredArrayUsingPredicate:predicate]);

// 方法二:

for (int i = 0; i count]; i++) {

if ([predicate evaluateWithObject:[ _array objectAtIndex:i]]) {

NSLog(@"%@",[arrayobjectAtIndex:i]);

}

}

}