[英]UIButton target action not being called
如果這很簡單,請原諒我,我仍然在磨練我的編程技巧。 我正在嘗試將此按鈕設置為目標。 應該很容易,但是我不知道為什么它不起作用! 我插入了NSLog進行測試,但未調用該方法! 謝謝你的幫助。
//ShareView.h
@property (strong,nonatomic) UIButton *cancelBtn;
//ShareView.m
- (id)initWithFrame:(CGRect)frame{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
UIImage *shareImage = [UIImage imageNamed:@"shareBox.png"];
[self setFrame:CGRectMake(10, 170, shareImage.size.width, shareImage.size.height)];
self.shareIV = [[UIImageView alloc] initWithImage:shareImage];
self.shareIV.userInteractionEnabled = YES;
[self addSubview:self.shareIV];
[self shareBtnsInit];
[self.shareIV addSubview:self.cancelBtn];
self.userInteractionEnabled = YES;
}
return self;
}
-(void)shareBtnsInit{
UIImage *cancelImg = [UIImage imageNamed:@"cancel27.png"];
self.cancelBtn = [UIButton buttonWithType:UIButtonTypeCustom];
[self.cancelBtn setImage:cancelImg forState:UIControlStateNormal];
[self.cancelBtn setFrame:CGRectMake(277, 3, cancelImg.size.width, cancelImg.size.height)];
}
//MainViewController.m
-(IBAction)settingsButtonPressed:(id)sender{
self.shareVC = [[ShareView alloc] initWithFrame:CGRectMake(0, 0, 0,0)];
[self.view addSubview: self.shareVC];
[self.shareVC.cancelBtn addTarget:self action:@selector(settingsCancel:) forControlEvents:UIControlEventTouchUpInside];
}
-(IBAction)settingsCancel:(id)sender{
NSLog(@"TEST!!!");
[self.shareVC removeFromSuperview];
}
基於注釋,沒有調用settingsButtonPressed:
方法,因此從未設置要查找操作的按鈕。
嘗試添加[self.cancelBtn addTarget:self action:@selector(settingsCancel:) forControlEvents:UIControlEventTouchUpInside];
到您的shareBtnsInit方法。
以下是有關以編程方式制作UIButton的更多信息: 如何以編程方式創建基本的UIButton?
[self.cancelBtn addTarget:MainViewController action:@selector(settingsCancel:) forControlEvents:UIControlEventTouchUpInside];
在ShareView中,您必須導入要觸發事件的類。 在ShareView中,您可以導入MainViewController類並可以使用它。
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