IOS 开发之UISearchBar 详解及实例

ios uisearchbar 详解

iphone开发之uisearchbar学习是本文要学习的内容，主要介绍了uisearchbar的使用，不多说，我们先来看详细内容。关于uisearchbar的一些问题。

1、修改uisearchbar的背景颜色

uisearchbar是由两个subview组成的，一个是uisearchbarbackground,另一个是uitextfield. 要ib中没有直接操作背景的属性。方法是直接将 uisearchbarbackground移去 

seachbar=[[uisearchbar alloc] init]; 
seachbar.backgroundcolor=[uicolor clearcolor]; 
for (uiview *subview in seachbar.subviews)  
{  
if ([subview iskindofclass:nsclassfromstring(@"uisearchbarbackground")]) 
    {  
[subview removefromsuperview];  
break; 
}  
} 

第二种解决的方法：

[[searchbar.subviews objectatindex:0]removefromsuperview]; 

2、

uisearchbar* m_searchbar = [[uisearchbar alloc] initwithframe:cgrectmake(0, 44, 320, 41)]; 
m_searchbar.delegate = self; 
m_searchbar.barstyle = uibarstyleblacktranslucent; 
m_searchbar.autocorrectiontype = uitextautocorrectiontypeno; 
m_searchbar.autocapitalizationtype = uitextautocapitalizationtypenone; 
m_searchbar.placeholder = _(@"search"); 
m_searchbar.keyboardtype = uikeyboardtypedefault; 
//为uisearchbar添加背景图片 
uiview *segment = [m_searchbar.subviews objectatindex:0]; 
uiimageview *bgimage = [[uiimageview alloc] initwithimage:[uiimage imagenamed:@"images/search_bar_bg.png"]]; 
[segment addsubview: bgimage]; 
//<---背景图片 
[self.view addsubview:m_searchbar]; 
[m_searchbar release]; 

3：取消uisearchbar调用的键盘

[searchbar resignfirstresponder]; 

添加uisearchbar的两种方法：

代码

uisearchbar *mysearchbar = [[uisearchbar alloc] 
initwithframe:cgrectmake(0.0, 0.0, self.view.bounds.size.width, 45)];     
 mysearchbar.delegate = self;     
 mysearchbar.showscancelbutton = no;     
 mysearchbar.barstyle=uibarstyledefault;     
 mysearchbar.placeholder=@"enter name or categary";      
mysearchbar.keyboardtype=uikeyboardtypenamephonepad;      
[self.view addsubview:mysearchbar];     
 [mysearchbar release];  

在 tableview上添加：  

代码 

 //add table 
    uitableview *mybeaconstableview = [[uitableview alloc]  
                      initwithframe:cgrectmake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height-40)  
                       style:uitableviewstyleplain]; 
    mybeaconstableview.backgroundcolor = [uicolor whitecolor]; 
    mybeaconstableview.delegate=self; 
    mybeaconstableview.datasource=self; 
    [mybeaconstableview setrowheight:40]; 
    // add searchbar  
    searchbar = [[uisearchbar alloc] initwithframe:cgrectmake(0.0, 0.0, self.view.bounds.size.width, 40)]; 
    searchbar.placeholder=@"enter name"; 
    searchbar.delegate = self; 
    mybeaconstableview.tableheaderview = searchbar; 
    searchbar.autocorrectiontype = uitextautocorrectiontypeno; 
    searchbar.autocapitalizationtype = uitextautocapitalizationtypenone; 
    [searchbar release]; 
    [self.view addsubview:mybeaconstableview]; 
    [mybeaconstableview release]; 

小结：iphone开发之uisearchbar学习的内容介绍完了，希望本文对你有所帮助