UISegmentedControl 仅显示设备上的第一项，但在模拟器中工作
我已经搜索了如何将 UISegmentedControl 项目添加到导航栏按钮项目（右栏按钮）。它在模拟器中工作正常，但当我在设备上尝试它时，仅显示分段控件中的第一项。它占据了整个长度（即整个事物中只有一个片段）。
- (void) setupSegmentedControl {
//set up the segmented control and add it to the nav bar rightBartButtonItem
UISegmentedControl * segmentControl = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:[UIImage imageNamed:@"Settings.png"],[UIImage imageNamed:@"Map-Icon.png"],[UIImage imageNamed:@"Search.png"], nil]];
UIBarButtonItem * segmentControlButton = [[UIBarButtonItem alloc] initWithCustomView:segmentControl];
[segmentControl setBackgroundColor:[UIColor clearColor]];
segmentControl.segmentedControlStyle = UISegmentedControlStyleBar;
segmentControl.frame = CGRectMake(0, 0, 75, 30);
[segmentControl setMomentary:YES];
[segmentControl addTarget:self
action:@selector(segmentedControlAction:)
forControlEvents:UIControlEventValueChanged];
self.navigationItem.rightBarButtonItem = segmentControlButton;
[segmentControl release];
}
有什么想法出了什么问题吗？
I have searched around an figured out how to add a UISegmentedControl item to the navigation bar button item (right bar button). It works fine in the simulator but when I try it on the device, only the first item in the segmented control shows up. It occupies the full length (i.e. there is only one segment across the whole thing).
- (void) setupSegmentedControl {
//set up the segmented control and add it to the nav bar rightBartButtonItem
UISegmentedControl * segmentControl = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:[UIImage imageNamed:@"Settings.png"],[UIImage imageNamed:@"Map-Icon.png"],[UIImage imageNamed:@"Search.png"], nil]];
UIBarButtonItem * segmentControlButton = [[UIBarButtonItem alloc] initWithCustomView:segmentControl];
[segmentControl setBackgroundColor:[UIColor clearColor]];
segmentControl.segmentedControlStyle = UISegmentedControlStyleBar;
segmentControl.frame = CGRectMake(0, 0, 75, 30);
[segmentControl setMomentary:YES];
[segmentControl addTarget:self
action:@selector(segmentedControlAction:)
forControlEvents:UIControlEventValueChanged];
self.navigationItem.rightBarButtonItem = segmentControlButton;
[segmentControl release];
}
Any ideas what going wrong?
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确保图像文件名与项目中的资源名称完全匹配，包括大写/小写字母。
设备区分大小写，如果名称不匹配，
imageNamed:将返回nil终止数组。Make sure that the image filenames match exactly with the resource names in your project including uppercase/lowercase letters.
The device is case-sensitive and if the name doesn't match,
imageNamed:will returnnilterminating the array.