UIButton在不同状态(被点击\正常状态\不可用\ ...)标题是可以不同的
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按钮的状态
typedef NS_OPTIONS(NSUInteger, UIControlState) {
UIControlStateNormal = 0,
UIControlStateHighlighted = 1 << 0, // used when UIControl isHighlighted is set
UIControlStateDisabled = 1 << 1,
UIControlStateSelected = 1 << 2, // flag usable by app (see below)
UIControlStateFocused NS_ENUM_AVAILABLE_IOS(9_0) = 1 << 3, // Applicable only when the screen supports focus
UIControlStateApplication = 0x00FF0000, // additional flags available for application use
UIControlStateReserved = 0xFF000000 // flags reserved for internal framework use
};以下代码获取正常状态下的标题,并赋值给别的变量
UIControlStateNormal为正常状态
- (IBAction)buttonPressed:(UIButton *)sender {
NSString *title = [sender titleForState:UIControlStateNormal];
NSString *plainText = [NSString stringWithFormat:@"%@ button pressed.", title];
_statusLable.text = plainText;
}