Question

我正在以编程方式创建UIButton。我希望UIViewController成为该按钮操作的目标。我该怎么做？。如果我点击按钮导航将无法工作。这是我的代码。请帮助我任何人。谢谢提前。

- (void)viewDidLoad
{
    weeklyAudio=[UIButton buttonWithType:UIButtonTypeCustom];
    [weeklyAudio addTarget:self action:@selector(weeklyPredictions) forControlEvents:UIControlEventTouchUpInside];
    [weeklyAudio setTitle:@"WEEKLY PREDICTIONS" forState:UIControlStateNormal];
    weeklyAudio.titleLabel.textAlignment = NSLineBreakByWordWrapping;            
    weeklyAudio.titleLabel.numberOfLines = 2;
    [weeklyAudio.titleLabel setTextAlignment: NSTextAlignmentCenter];
    [weeklyAudio setTitleEdgeInsets:UIEdgeInsetsMake(60, 10, 10, 10)];
    [weeklyAudio.titleLabel setFont:[UIFont systemFontOfSize:14.0]];
    weeklyAudio.frame=CGRectMake(10, 20, 140, 120);
    weeklyAudio.layer.cornerRadius=5;
    weeklyAudio.backgroundColor=[UIColor colorWithRed:232.0f/255.0f green:52.0f/255.0f blue:27.0f/255.0f alpha:1.0];

    [backGroundImage addSubview:weeklyAudio];

    weeklyAudioImage=[[UIImageView alloc]initWithFrame:CGRectMake(45, 10, 48, 48)];
    weeklyAudioImage.image=[UIImage imageNamed:@"m48*48.png"];
    [weeklyAudio addSubview:weeklyAudioImage];
    weeklyAudio.autoresizingMask =  UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin |UIViewAutoresizingFlexibleBottomMargin  | UIViewAutoresizingFlexibleTopMargin;
}

-(void)weeklyPredictions
{
    WeeklyViewController *weekly=[[WeeklyViewController alloc]init];
    [self.navigationController pushViewController:weekly animated:NO];
}

Answer 1

在-(void)weeklyPredictions中设置断点，然后调试以查看单击按钮时是否在方法中运行。如果在其中运行，请在控制台中打印po [self navigationController]以查看viewController是否具有导航控制器。如果结果为零，则无法推送另一个视图控制器。

Answer 2

您是否使用导航控制器来推送和弹出viewcontrollers？如果不.. 使用

[self presentViewController:weekly animated:YES completion:nil];

展示你的下一个viewcontroller。

Answer 3

在addSubview

之前添加以下代码

[weeklyAudio addTarget:self action:@selector(weeklyPredictions) forControlEvents:UIControlEventTouchUpInside];

将您的weeklyPredictions方法修改为：

-(void)weeklyPredictions {
    WeeklyViewController *weekly=[[WeeklyViewController alloc]initWithNibName:NSStringFromClass([WeeklyViewController class]) bundle:nil];
    [self.navigationController pushViewController:weekly animated:NO];
}

Answer 4

您需要在viewDidLoad薄荷中添加以下行：

backGroundImage.userInteractionEnabled = YES;

由于UIImageView默认禁用了用户交互，因此添加到图像视图的任何子视图都不会获得触摸事件。

希望它能解决您的问题，如果是，请投票。

此致 Satendra

如何将UIViewController导航为以编程方式创建的UIButton操作的目标

4 个答案: