CMPopTipView在iOS中的应用

主要是用到了一个自定义的CMPopTipView，使用起来还是挺简单的，具体的实现请参考附件。

- (IBAction)buttonAction:(id)sender {
	[self dismissAllPopTipViews];
	
	if (sender == currentPopTipViewTarget) {
		self.currentPopTipViewTarget = nil;
	} else {
		NSString *contentMessage = nil;
		UIView *contentView = nil;
		id content = [self.contents objectForKey:[NSNumber numberWithInt:[(UIView *)sender tag]]];
		if ([content isKindOfClass:[UIView class]]) {
			contentView = content;
		} else if ([content isKindOfClass:[NSString class]]) {
			contentMessage = content;
		} else {
			contentMessage = @"A CMPopTipView can automatically point to any view or bar button item.";
		}
		NSArray *colorScheme = [colorSchemes objectAtIndex:foo4random()*[colorSchemes count]];
		UIColor *backgroundColor = [colorScheme objectAtIndex:0];
		UIColor *textColor = [colorScheme objectAtIndex:1];
		
		CMPopTipView *popTipView;
		if (contentView) {
			popTipView = [[[CMPopTipView alloc] initWithCustomView:contentView] autorelease];
		} else {
			popTipView = [[[CMPopTipView alloc] initWithMessage:contentMessage] autorelease];
		}
		popTipView.delegate = self;
		if (backgroundColor && ![backgroundColor isEqual:[NSNull null]]) {
			popTipView.backgroundColor = backgroundColor;
		}
		if (textColor && ![textColor isEqual:[NSNull null]]) {
			popTipView.textColor = textColor;
		}
        
        popTipView.animation = arc4random() % 2;
		
		popTipView.dismissTapAnywhere = YES;
        [popTipView autoDismissAnimated:YES atTimeInterval:3.0];

		if ([sender isKindOfClass:[UIButton class]]) {
			UIButton *button = (UIButton *)sender;
			[popTipView presentPointingAtView:button inView:self.view animated:YES];
		} else {
			UIBarButtonItem *barButtonItem = (UIBarButtonItem *)sender;
			[popTipView presentPointingAtBarButtonItem:barButtonItem animated:YES];
		}
		
		[visiblePopTipViews addObject:popTipView];
		self.currentPopTipViewTarget = sender;
	}
}