在 UIScrollView 中以编程方式依次单击 10 个 UIButton

Posted 2023-03-16

【中文标题】在 UIScrollView 中以编程方式依次单击 10 个 UIButton

【英文标题】：Programmatically Click 10 UIButtons one after another in UIScrollView

【发布时间】：2015-06-29 13:13:31

【问题描述】：

我正在开发一个控件，其中在 UIScrollView 中添加了 10 个 UIButton。现在我需要在延迟一段时间后一个接一个地单击每个按钮。大家能指导我怎么做吗？

这是我所做的代码。

在 viewcontroller.h 文件中

@property (weak) IBOutlet UIScrollView *mapScrollView;
@property (strong) UIButton *addContactIcon;

在 viewcontroller.m 文件中

// Set up ScrollView with UIButtons
NSUInteger xPosition = 1;
NSUInteger countIndex = 0;
for (ContactModule *sortedContacts in _distanceList) 

    _addContactIcon = [[UIButton alloc] initWithFrame:CGRectMake(xPosition, 7, 30, 30)];
    _addContactIcon.tag = countIndex;
    [_addContactIcon addTarget:self action:@selector(mapsScrollButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
    _addContactIcon.layer.cornerRadius = 2.0;
    _addContactIcon.clipsToBounds = YES;
    [_addContactIcon setBackgroundImage:[UIImage imageWithContentsOfFile:dataPath] forState:UIControlStateNormal];
    [_addContactIcon setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [_mapScrollView addSubview:_addContactIcon];
    xPosition += _addContactIcon.frame.size.width + 2;
    countIndex = countIndex + 1;

_mapScrollView.contentSize = CGSizeMake(30 * _distanceList.count + 34, 40);
[_mapScrollView setShowsHorizontalScrollIndicator:NO];

这里是每个按钮的按钮点击方法：

- (void)mapsScrollButtonClicked:(UIButton *)clickButton 

    // Set Annotation Callout
    [_mapsView selectAnnotation:[_mapsView.annotations objectAtIndex:clickButton.tag] animated:YES];

现在的要求是我想为 UIScrollview 中的每个 UIButtons 调用 Action Method。为此，我在下面做错了什么。帮我解决这个问题：

for(NSUInteger count=0; count<[_distanceList count];count++)    

            [UIView animateWithDuration:0.4
                              delay:0.8
                            options:0
                         animations:^
                             [_addContactIcon sendActionsForControlEvents:UIControlEventTouchUpInside];
                          completion:nil];
 

【问题讨论】：

为什么不直接调用 mapsScrollButtonClicked 10 次？

@Evgeniy：效果不好。你也可以检查一下。

【参考方案1】：

您好，您可以执行以下操作来单击视图上的所有 UIButton。

UIButton *button;

- (void)viewDidLoad 
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    UIButton *buttonMaster;
    buttonMaster = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    [buttonMaster addTarget:self
               action:@selector(masterButtonTapped:)
     forControlEvents:UIControlEventTouchUpInside];
    [buttonMaster setTitle:@"Show View" forState:UIControlStateNormal];
    buttonMaster.frame = CGRectMake(80.0, y, 160.0, 40.0);
    buttonMaster.tag = 100;
    [self.view addSubview:buttonMaster];


    y = 60;

    for (int x=0; x<=10; x++)
    
        button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        [button addTarget:self
               action:@selector(button1:)
         forControlEvents:UIControlEventTouchUpInside];
        [button setTitle:@"Show View" forState:UIControlStateNormal];
        button.frame = CGRectMake(80.0, y, 160.0, 30.0);
        button.tag = x;
        //[paintView addSubview:button];
        [self.view addSubview:button];
        y = y + 70;
    

    [buttonMaster sendActionsForControlEvents:UIControlEventTouchUpInside];


    if ([[self.view viewWithTag:0] isKindOfClass:[UIButton class]]) 

        //UIButton *button = (UIButton *) view;
        // do something funky with button
        UIButton *myBtns = (UIButton *)[self.view viewWithTag:0];
        NSLog(@" button tapped is %ld", myBtns.tag);
        [myBtns sendActionsForControlEvents:UIControlEventTouchUpInside];
        [myBtns setBackgroundColor:[UIColor greenColor]];



     else 
        // do something funky with view
        NSLog(@"do nothing ");

    




- (void)listSubviewsOfView:(UIView *)view 

    // Get the subviews of the view
    NSArray *subviews = [view subviews];

    // Return if there are no subviews
    //if ([subviews count] == 0) return; // COUNT CHECK LINE

    for (UIView *subview in subviews) 

        UIButton *myBtns = (UIButton *)[self.view viewWithTag:subview.tag];
        //UIButton *myBtns = (UIButton *)[self.view viewWithTag:0];
        if(myBtns.tag == 100 )

            NSLog(@"Master Button tag  :- Dont do anything ");
        else
        
            //[myBtns sendActionsForControlEvents:UIControlEventTouchUpInside];
            NSLog(@"tags are %ld ", myBtns.tag);

        
        // List the subviews of subview
        //[self listSubviewsOfView:subview];
    


-(void) clickAllButtons

    for (int i = 0; i<=10; i++) 

        UIButton *myBtns = (UIButton *)[self.view viewWithTag:i];
        [myBtns sendActionsForControlEvents:UIControlEventTouchUpInside];
    

- (IBAction)masterButtonTapped:(UIButton*)sender

        //[self listSubviewsOfView:self.view];
   // [self clickAllButtons];



- (IBAction)button1:(UIButton*)sender


    NSLog(@"test");
    //NSLog(@"Button clicked %ld", tag);