关于UISearchBar

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];