iOS App开发中UISearchBar搜索栏组件的基本用法整理

基本属性

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

pragma mark -基本设置

//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)

    // 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

    // 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

    // 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)

@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
}

(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

@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]);
        }
    }
}

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