如何在可点击的UIToolbar中制作UIActivityIndi​​catorView

Question

I'm using this code to insert an UIActivityIndicatorView to my toolbar

-(void)addActivityIndicatorToToolbar {
    UIActivityIndicatorView *activityIndicator = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(0, 0, 20, 20)];
    activityIndicator.userInteractionEnabled = YES;
    activityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhite;
    [activityIndicator startAnimating];

    UIBarButtonItem *barButton = [[UIBarButtonItem alloc] initWithCustomView:activityIndicator];
    barButton.target = self;
    barButton.action = @selector(playButtonPressed:);

    NSMutableArray *toolbarItemsMutable = [self.toolbar.items mutableCopy];
    [toolbarItemsMutable replaceObjectAtIndex:0 withObject:barButton];
    self.toolbar.items = toolbarItemsMutable;  
}

However, when I tap the UIActivityIndicatorView the action (playButtonPressed) is not performed.

How can I correct this?

Answer 1

It seems more likely that you want a button with an activity indicator inside it. You can do this by creating a button with a custom view as described in this post . Then you can set the action of this button as normal, and you'll probably want to retain a reference to the activity indicator to start and stop it.

Answer 2

最后，我通过用actionRecognizer在activityIndi​​catorView之上添加了一个额外的视图，从而实现了一个穷人的解决方案。

Answer 3

This is a quite old question but why don't you directly add a UITapGestureRecognizer instance to your UIActivityIndicatorView instance ? (works fine on iOS 8.2, I didn't test yet on previous versions).