UI类的扩展和触碰

类目

#import <UIKit/UIKit.h>

@interface UIButton (ZJQ_button)

+ (id)zjq_initWithFrame:(CGRect)frame

             target:(id)target

             action:(SEL)selecor

              title:(NSString *)title;

@end

#import "UIButton+ZJQ_button.h"

@implementation UIButton (ZJQ_button)

+ (id)zjq_initWithFrame:(CGRect)frame

             target:(id)target

             action:(SEL)selecor

              title:(NSString *)title

{

    UIButton *button = [UIButtonbuttonWithType:UIButtonTypeSystem];

    button.frame = frame;

    [button setTitle:titleforState:UIControlStateNormal];

    button.layer.borderWidth =1;

    [button addTarget:targetaction:selecor forControlEvents:UIControlEventTouchUpInside];

   return button;

}

@end

扩展,协议

#import <UIKit/UIKit.h>

@protocol myViewDelegate <NSObject>

- (void)changColor;

@end

@interface MyView :UIView

@property(nonatomic,assign)id<myViewDelegate>delegate;

@end

#import "MyView.h"

@implementation MyView

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{

    [self.delegatechangColor];

}

@end

实现文件

@interface MainViewController ()<myViewDelegate>

@property(nonatomic,retain)MyView *myView;

@end

...

- (void)changColor{

    self.myView.backgroundColor = [UIColorcolorWithRed:arc4random() %256 /255.0green:arc4random() %256 /255.0blue:arc4random() %256 /255.0alpha:1];

}

触碰

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event;

- (void)touchesEnd:(NSSet *)touches withEvent:(UIEvent *)event;

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event;

- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event;

摇一摇

- (void)motionBegan:(NSSet *)touches withEvent:(UIEvent *)event;

- (void)motionEnd:(NSSet *)touches withEvent:(UIEvent *)event;

- (void)motionCancelled:(NSSet *)touches withEvent:(UIEvent *)event;