修改UISearchBar背景颜色

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，