IOS中 Button(按鈕)是用來處理用戶的操作。它截取的觸摸事件,并發(fā)送消息到目標對象。
實用程序區(qū)(右側(cè)窗口),在屬性檢查器中,可以在 xib 改變按鈕的屬性。
按鈕類型
UIButtonTypeCustom
UIButtonTypeRoundedRect
UIButtonTypeDetailDisclosure
UIButtonTypeInfoLight
UIButtonTypeInfoDark
UIButtonTypeContactAdd
重要的屬性
imageView
titleLabel
重要的方法
+ (id)buttonWithType:(UIButtonType)buttonType
- (UIImage *)backgroundImageForState:(UIControlState)state
- (UIImage *)imageForState:(UIControlState)state
- (void)setTitle:(NSString *)title forState:(UIControlState)state
- (void)addTarget:(id)target action:(SEL)action forControlEvents: (UIControlEvents) controlEvents
添加一個自定義的方法addDifferentTypesOfButton
-(void)addDifferentTypesOfButton { // A rounded Rect button created by using class method UIButton *roundRectButton = [UIButton buttonWithType: UIButtonTypeRoundedRect]; [roundRectButton setFrame:CGRectMake(60, 50, 200, 40)]; // sets title for the button [roundRectButton setTitle:@"Rounded Rect Button" forState: UIControlStateNormal]; [self.view addSubview:roundRectButton]; UIButton *customButton = [UIButton buttonWithType: UIButtonTypeCustom]; [customButton setBackgroundColor: [UIColor lightGrayColor]]; [customButton setTitleColor:[UIColor blackColor] forState: UIControlStateHighlighted]; //sets background image for normal state [customButton setBackgroundImage:[UIImage imageNamed: @"Button_Default.png"] forState:UIControlStateNormal]; //sets background image for highlighted state [customButton setBackgroundImage:[UIImage imageNamed: @"Button_Highlighted.png"] forState:UIControlStateHighlighted]; [customButton setFrame:CGRectMake(60, 100, 200, 40)]; [customButton setTitle:@"Custom Button" forState:UIControlStateNormal]; [self.view addSubview:customButton]; UIButton *detailDisclosureButton = [UIButton buttonWithType: UIButtonTypeDetailDisclosure]; [detailDisclosureButton setFrame:CGRectMake(60, 150, 200, 40)]; [detailDisclosureButton setTitle:@"Detail disclosure" forState: UIControlStateNormal]; [self.view addSubview:detailDisclosureButton]; UIButton *contactButton = [UIButton buttonWithType: UIButtonTypeContactAdd]; [contactButton setFrame:CGRectMake(60, 200, 200, 40)]; [self.view addSubview:contactButton]; UIButton *infoDarkButton = [UIButton buttonWithType: 上一篇:iOS - Status Bar(狀態(tài)欄)下一篇:IOS - 輸入類型 文本字段