如何从子类化的UIButton调用viewController中的方法？
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我试图找到一种识别按钮上的触摸并按住的方法。我以为对按钮进行子类化是一个好主意，但是我现在正为子类，parentsviews和viewcontroller的整个概念而苦苦挣扎。因此，请原谅，我担心这是一个初学者的问题：
如何从子类UIButton调用方法（已在ViewController中定义）？
[self someMethod];不起作用-因为UIButton不是我的ViewController的后代。
[super someMethod];也不起作用-我想同样的问题
[self.superview someMethod]; ...再次没有运气
[MyViewController someMethod];也不起作用-因为它是“未清除”-我必须导入ViewController吗？还是执行某种协议/类调用？
任何帮助将不胜感激。
这是我的子类：
//
// MoleButton.h
//
#import <Foundation/Foundation.h>
@interface MoleButton : UIButton {
int page;
NSString *colour;
UIViewController *theViewController;
NSTimer *holdTimer;
}
@property (nonatomic, assign) int page;
@property (nonatomic, assign) NSString *colour;
@end
//
// MoleButton.m
#import \"MoleButton.h\"
@implementation MoleButton
@synthesize page, colour;
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
[super touchesBegan:touches withEvent:event];
[self.superview touchesBegan:touches withEvent:event];
[holdTimer invalidate];
holdTimer = [NSTimer scheduledTimerWithTimeInterval:2.0 target:self selector:@selector(touchWasHeld) userInfo:nil repeats:NO];
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
[super touchesMoved:touches withEvent:event];
[self.superview touchesMoved:touches withEvent:event];
[holdTimer invalidate];
holdTimer = nil;
}
-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
[super touchesEnded:touches withEvent:event];
[self.superview touchesEnded:touches withEvent:event];
}
- (void)touchWasHeld
{
holdTimer = nil;
// do your \"held\" behavior here
NSLog(@\"TOUCH WAS HELD!!!!\");
[self.theViewController doSomething];
}
@end
没有找到相关结果
已邀请:
2 个回复
漂截嘘
宠封钞轰