以编程方式触发按钮点击事件？

Question

Is there a way to programmatically fire a button click event? I have a button placed there in an UIView, and in a particular scenario i want to click the button via code, not manually as a user. Is it possible in iOS development? Please provide your suggestions and guide me how to do that.

Thanks.

Answer 1

有点像Ken的答案，但更灵活，因为如果您更改或添加多个按钮，它会跟踪按钮的实际操作。

[button sendActionsForControlEvents:UIControlEventTouchUpInside];

Answer 2

I had the same issue as above. I would have posted a comment, but my reputation isn't high enough. So, I will instead post the full answer:

[btn setHighlighted:YES];
[btn sendActionsForControlEvents:UIControlEventTouchUpInside];
[btn performSelector:@selector(setHighlighted:) withObject:NO afterDelay:0.25];

This will programmatically hit the button and highlight it for a seemingly normal amount of time. Richie's suggestion didn't work as the button was only highlighted (if at all) for an imperceptible amount of time.

Answer 3

Why not just execute the code that executes when the user presses the button?

-(void)myMethod
{
   // do stuff
}

-(IBAction)myButtonClick:(id)sender
{
    [self myMethod];
}

-(void)clickMyButton
{
    [self myMethod];
    // OR
    [self myButtonClick:nil];
}

Answer 4

If you're talking about a UIButton, you can just call the same method that the UIButton is calling when it is tapped. For example:

[self myButtonsTargetMethod];

Answer 5

Yes,

[_button setHighlighted:YES];
[_button sendActionsForControlEvents:UIControlEventTouchUpInside];
[_button setHighlighted:NO];

But the problem here is you will not be able to see those event because its too fast . so what you can do is try the above code with NSTimer .

NSTimer *quick = [NSTimer scheduledTimerWithTimeInterval:2.5 target:self selector:@selector(MeFirst:) userInfo:nil repeats:NO];

MeFirst is the method i have created.