Question

如何使用两个操作创建UIButton。

我知道通过使用UILongPressGestureRecognizer，我们可以执行Longpress。

但我的要求是，当我长按UIButton时，它必须执行一个操作并在触摸时

在它内部，它必须执行另一个动作。

感谢。

以下是我的代码。

       UIImage *redImage = [UIImage imageNamed:@"TabFav2.png"];
tabRedbutton = [UIButton buttonWithType:UIButtonTypeCustom];
[tabRedbutton setImage:redImage forState:UIControlStateNormal];
tabRedbutton.frame = CGRectMake(0.0, 0.0, 50,35);
redTAb = [[UIBarButtonItem alloc] initWithCustomView:tabRedbutton];
[tabRedbutton addTarget:self action:@selector(redbottonmethod)  forControlEvents:UIControlEventTouchUpInside];



 longpressGesture1 = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressHandler:)];
longpressGesture1.minimumPressDuration =0.1;
[longpressGesture1 setDelegate:self];
longpressGesture1.cancelsTouchesInView = NO;
[tabRedbutton addGestureRecognizer:longpressGesture1];

[longpressGesture1 release];

 - (void)longPressHandler:(UILongPressGestureRecognizer *)gestureRecognizer {

   if (longpressGesture.state == UIGestureRecognizerStateBegan)
    {
  NSlog(@"Long press");
    }

 }


-(void)redbottonmethod
 {  

  NSlog(@"single tapped");
 }

Answer 1

对于水龙头，您可以使用UIButton的“addTarget：...”方法，对于长按，您可以添加手势识别器：

UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(100.0, 100.0, 100.0, 20.0);
[btn setTitle:@"Test" forState:UIControlStateNormal];
[btn addTarget:self action:@selector(userTapped:) forControlEvents:UIControlEventTouchUpInside];

UILongPressGestureRecognizer *gr = [[UILongPressGestureRecognizer alloc] init];
[gr addTarget:self action:@selector(userLongPressed:)];
[btn addGestureRecognizer:gr];
[gr release];

[self.view addSubview:btn];

当然，您需要实现将被调用的两种方法：

- (void)userTapped:(id)sender {
   NSLog(@"user tapped");
}

- (void)userLongPressed:(id)sender {
   NSLog(@"user long pressed");
}

希望有所帮助。

======

编辑：您似乎在UIToolbar中使用按钮作为BarButtonItem。所以我改变了我的代码来做同样的事情：

- (void)viewDidLoad {
  [super viewDidLoad];

  // set up the button
  UIImage *redImage = [UIImage imageNamed:@"TabFav2.png"];
  UIButton *tabRedbutton = [UIButton buttonWithType:UIButtonTypeCustom];
  tabRedbutton.backgroundColor = [UIColor redColor];
  [tabRedbutton setImage:redImage forState:UIControlStateNormal];
  tabRedbutton.frame = CGRectMake(0.0, 0.0, 50,35);

  // set up a bar button item with the button as its view
  UIBarButtonItem *redTab = [[UIBarButtonItem alloc] initWithCustomView:tabRedbutton];

  // set up toolbar and add the button as a bar button item
  UIToolbar *toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0.0, 100.0, 768.0, 40.0)];
  toolbar.barStyle = UIBarStyleBlack;
  NSArray *items = [NSArray arrayWithObject:redTab];
  [toolbar setItems:items];
  [self.view addSubview:toolbar];
 [toolbar release];

  // add tap handler to button for tap
  [tabRedbutton addTarget:self action:@selector(redbottonmethod)  forControlEvents:UIControlEventTouchUpInside];

  // add gesture recognizer to button for longpress
  UILongPressGestureRecognizer *longpressGesture1 = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressHandler:)];
  longpressGesture1.minimumPressDuration =0.1;
  [tabRedbutton addGestureRecognizer:longpressGesture1];
  [longpressGesture1 release];
}

被调用的两种方法：

- (void)longPressHandler:(UILongPressGestureRecognizer *)gestureRecognizer {
    NSLog(@"Long press");
}


-(void)redbottonmethod {  
    NSLog(@"single tapped");
}

这段代码绝对有用。

顺便说一下：我注意到在你调用的2个方法的代码中你输错了：你必须使用NSLog（）而不是NSlog（）。这可能是问题吗？

UI按钮，长按和内部触摸

1 个答案: