UIButton

1、創建

/*
     UIButtonTypeCustom = 0,                         // no button type
     UIButtonTypeSystem NS_ENUM_AVAILABLE_IOS(7_0),  // standard system button

     UIButtonTypeDetailDisclosure,
     UIButtonTypeInfoLight,
     UIButtonTypeInfoDark,
     UIButtonTypeContactAdd,

     UIButtonTypeRoundedRect = UIButtonTypeSystem,   // Deprecated, use UIButtonTypeSystem instead
     */

UIButton *button = [UIButton buttonWithType:(UIButtonTypeSystem)];

2、位置大小

button.frame = CGRectMake(100, 100, 100, 30);

3、背景顏色

button.backgroundColor = [UIColor yellowColor];

4、文字及文字顏色

 /*
     UIControlStateNormal       = 0,
     UIControlStateHighlighted  = 1 << 0,                  // used when UIControl isHighlighted is set
     UIControlStateDisabled     = 1 << 1,
     UIControlStateSelected     = 1 << 2,                  // flag usable by app (see below)
     UIControlStateApplication  = 0x00FF0000,              // additional flags available for application use
     UIControlStateReserved     = 0xFF000000               // flags reserved for internal framework use

     */


 [button setTitle:@"按鈕" forState:(UIControlStateNormal)];
 [button setTintColor:[UIColor redColor]];

5、button的label屬性

// 後面文字大小、字體、倒角、陰影...都與UILable的屬性一致
button.titleLabel

6、點擊事件

 //按下提示鬆開發送 --> touchDown
    //鬆開提示發送成功 --> touchUpInSide
    //向外滑出提示取消 --> touchDragExit
    //往回滑提示鬆開發送 --> touchDragEnter
    //在按鈕外鬆開提示取消發送 --> touchUpOutSide

[button addTarget:self action:@selector(clickButton) forControlEvents:UIControlEventTouchDown];

7、禁用按鈕

button.enabled = NO;

8、設置已選中狀態

button.selected = YES;