IOS UIButton使用詳解

第1、UIButton的定義

 

    UIButton *button=[[UIButton buttonWithType:(UIButtonType);

可以定義的button類型有如下6種，
 typedef enum {
 UIButtonTypeCustom = 0, 自定義風格

 UIButtonTypeRoundedRect, 圓角矩形 

 UIButtonTypeDetailDisclosure, 藍色小箭頭按鈕，主要作詳細說明用

 UIButtonTypeInfoLight, 亮色感嘆號
 UIButtonTypeInfoDark, 暗色感嘆號
UIButtonTypeContactAdd, 十字加號按鈕

 } UIButtonType;

第2、設置frame

button1.frame = CGRectMake(20, 20, 280, 40);

[button setFrame:CGRectMake(20,20,50,50)];

第3、button背景色

button1.backgroundColor = [UIColor clearColor];

[button setBackgroundColor:[UIColor blueColor]];

第4、state狀態

 forState: 這個參數的做用是定義按鈕的文字或圖片在何種狀態下才會顯現

enum {
UIControlStateNormal = 0, 常規狀態顯現 
 UIControlStateHighlighted = 1 << 0, 高亮狀態顯現 
 UIControlStateDisabled = 1 << 1, 禁用的狀態纔會顯現
 UIControlStateSelected = 1 << 2, 選中狀態 
 UIControlStateApplication = 0x00FF0000, 當應用程序標誌時 

 UIControlStateReserved = 0xFF000000 爲內部框架預留，能夠無論他 
};

 

@property(nonatomic,getter=isEnabled)BOOL enabled;                                 // default is YES. if NO, ignores touch events and subclasses may draw differently

@property(nonatomic,getter=isSelected)BOOL selected;                               // default is NO may be used by some subclasses or by application

@property(nonatomic,getter=isHighlighted)BOOL highlighted;                          

第五 、設置button填充圖片和背景圖片

 

    [buttonsetImage:[UIImageimageNamed:@"checkmarkControllerIcon"]forState:UIControlStateNormal];

    [buttonsetBackgroundImage:[UIImageimageNamed:@"checkmarkControllerIcon"]forState:UIControlStateNormal];

第6、設置button標題和標題顏色

[button1 setTitle:@"點擊" forState:UIControlStateNormal];

 

  [buttonsetTitleColor:[UIColorredColor]forState:UIControlStateNormal];

第7、設置按鈕按下會發光

    button.showsTouchWhenHighlighted=NO;

 

第8、添加或刪除事件處理

[button1 addTarget:self action:@selector(butClick:) forControlEvents:UIControlEventTouchUpInside];

[btn removeTarget:nil action:nil forControlEvents:UIControlEventTouchUpInside];

第9、 設置按鈕內部圖片間距和標題間距

 UIEdgeInsets insets; // 設置按鈕內部圖片間距 insets.top = insets.bottom = insets.right = insets.left = 10; bt.contentEdgeInsets = insets; bt.titleEdgeInsets = insets; // 標題間距