Ipad 从UIBarButtonim以不同的点击次数显示不同的视图（包装UISegmentedControl）

我已经读过UITouch和uiGestureRecognitor，但我仍然很困惑它们之间的区别。 我有一个案子。在我的应用程序中，我有一个按钮，我想在点击该按钮时显示不同的视图。如果我进行单点点击，我想显示一个文本视图，但当我再次进行单点点击时，我想显示该按钮的弹出框。是否有人可以给我一个示例代码来做这件事，并对UITouch和UIGestureRecognizer之间的区别做一点解释

更新

barbuttonitem是UISegmentedControl的包装，这是desain的一张图片

我试图用touchesbeated:withEvent:和touchesend:withEvent:来解决这个问题，但我不知道如何将它与巴布托主义联系起来。 这是我写的代码：

-(void)addSegment{


NSAutoreleasePool *pool;
int count_doc = [_docsegmentmodels count];
NSLog(@"count doc add segment : %d", count_doc);
pool = [[NSAutoreleasePool alloc] init];
DocSegmentedModel *sl;
NSMutableArray *segmentTextMutable = [NSMutableArray array];

for(int i=0 ;(i<count_doc && i < max_segment);i++){
    sl = [_docsegmentmodels objectAtIndex:i];
    NSString *evalString = [[KoderAppDelegate sharedAppDelegate] setStringWithLength:sl.docSegmentFileName:10];  
    [segmentTextMutable addObject:NSLocalizedString(evalString,@"")];

}



NSArray *segmentText = [segmentTextMutable copy];

_docSegmentedControl = [[UISegmentedControl alloc] initWithItems:segmentText];
_docSegmentedControl.selectedSegmentIndex = 0; 
_docSegmentedControl.autoresizingMask =  UIViewAutoresizingFlexibleHeight;
_docSegmentedControl.segmentedControlStyle = UISegmentedControlStyleBezeled;//UISegmentedControlStylePlain;// UISegmentedControlStyleBar;//UISegmentedControlStyleBezeled;
//docSegmentedControl.frame = CGRectMake(0, 0, 800, 46.0);
[_docSegmentedControl addTarget:self action:@selector(docSegmentAction:) forControlEvents:UIControlEventValueChanged];

// Add the control to the navigation bar
//UIBarButtonItem *segmentItem = [[UIBarButtonItem alloc] initWithCustomView:_docSegmentedControl];
segmentItem = [[UIBarButtonItem alloc] initWithCustomView:_docSegmentedControl];
self.navItem.leftBarButtonItem = segmentItem;
self.navItem.leftBarButtonItem.title = @"";


[pool release];
[segmentItem release];
[_docSegmentedControl release];

}

}

}

}

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我的理解有错误吗？

在您的情况下，您不需要UIGestureRecognitor。只需将barbuttonitem的操作设置为点击按钮时应调用的方法。让该方法跟踪textview的状态，并根据它显示它或显示popover。

我仍然认为我必须使用UITouch或UIGestureRecognitor，因为barbuttonitem是以编程方式制作的，它是UISegmentedControl的包装，很抱歉在我的问题中没有声明它，但我仍然对它感到困惑

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
[NSObject cancelPreviousPerformRequestsWithTarget:self 
                                         selector:@selector(segmentItemTapped:) object:segmentItem];

-(void)touchesEnd:(NSSet *)touches withEvent:(UIEvent *)event{
if (touches.count == 1) {
    if (theTouch.tapCount == 2) {
        [self performSelector:@selector(segmentItemTapped:)withObject:segmentItem afterDelay:0.35];
    }else {
        [self performSelector:@selector(docSegmentAction:) withObject:segmentItem afterDelay:0.0];
    }
}   

- (IBAction)segmentItemTapped:(id)sender{  

if (self.fileProperties == nil) {
    self.fileProperties = [[[FilePropertiesViewController alloc] initWithNibName:@"FilePropertiesViewController" bundle:nil]autorelease];
    fileProperties.delegate = self;
    self.filePropertiesPopover = [[[UIPopoverController alloc] initWithContentViewController:fileProperties]autorelease];
    [_docsegmentmodels objectAtIndex:_docSegmentedControl.selectedSegmentIndex];
}

fileProperties.docProperties = _docsegmentmodels;
fileProperties.index = _docSegmentedControl.selectedSegmentIndex; //index utk nilai2 di textfield
[self.filePropertiesPopover presentPopoverFromBarButtonItem:sender 
                                   permittedArrowDirections:UIPopoverArrowDirectionUp
                                                   animated:YES];

- (IBAction)docSegmentAction:(id)sender{
NSLog(@"open file");
isFileOpen = YES;
[self.moreFilePopOverController dismissPopoverAnimated:YES];
[self.filePropertiesPopover dismissPopoverAnimated:YES];

[self showTextView];