iOS-UIToolbar与UISearchBar

组件_ UIToolbar

 /**

1. 顶部toolbar

    2. TextField可以以UIBarButtonItem的自定义视图的方式加入toolbar

    3. 三个按钮

    4. 将UIBarButtonItem加入toolBar

    **/

   UIToolbar *toolBar = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 44)];

   [self.view addSubview:toolBar];

    UITextField *textField = [[UITextField alloc]initWithFrame:CGRectMake(10, 6, 200, 32)];

   [textField setBorderStyle:UITextBorderStyleRoundedRect];// 设置边框

   [textField setContentVerticalAlignment:UIControlContentVerticalAlignmentCenter];// 设置垂直对齐

   [textField setClearButtonMode:UITextFieldViewModeWhileEditing];// 设置清除按钮

   [textField setDelegate:self];

   UIBarButtonItem *addressItem = [[UIBarButtonItem alloc]initWithCustomView:textField];

    

//初始化UIBarButtonItem方法1

UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRewind target:self action:@selector(todo1)];

//初始化UIBarButtonItem方法2

UIBarButtonItem *item1 = [[UIBarButtonItem alloc]initWithTitle:@"buttonName " style:UIBarButtonItemStyleBordered target:self action:@selector(btClick)];   

[toolBar setItems:@[addressItem, item1, item2, item3]];

 // 设置状态栏样式，因为改变bar的时候状态栏颜色会默认变成和bar一样的颜色

   [UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleBlackOpaque;

组件_UISearchBar

//初始化

 

   UISearchBar *search = [[UISearchBar alloc] init];

   search.autoresizingMask = UIViewAutoresizingFlexibleWidth;//可以伸缩的宽度

   search.frame = CGRectMake(0, 0, self.view.frame.size.width, kSearchH);

   search.delegate = self;

   [self.view addSubview:search];

   _searchBar = search;

//代理方法

#pragma mark 监听搜索框的文字改变

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

#pragma mark 搜索框开始编辑（开始聚焦）

- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar