是否可以使用IPhone SDK将按钮添加到导航栏?
导航栏中已有2个按钮,分别为leftBarButton和rightBarButton。我还需要2个按钮。如何实现?
我不需要将它们包含在导航栏中。但由于应用程序只包含一个表,我不认为它可以在其他地方给出。
答案 0 :(得分:18)
您可以使用UISegmentedControl。检查UICatalog代码示例,在导航栏中查看其用法。
以下是一些示例代码:
- (void)viewDidLoad {
[super viewDidLoad];
UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:
[NSArray arrayWithObjects:
[UIImage imageNamed:@"up.png"],
[UIImage imageNamed:@"down.png"],
nil]];
[segmentedControl addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
segmentedControl.frame = CGRectMake(0, 0, 90, 35);
segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
segmentedControl.momentary = YES;
UIBarButtonItem *segmentBarItem = [[UIBarButtonItem alloc] initWithCustomView:segmentedControl];
[segmentedControl release];
self.navigationItem.rightBarButtonItem = segmentBarItem;
[segmentBarItem release];
}
- (void)segmentAction:(id)sender{
if([sender selectedSegmentIndex] == 0){
//do something with segment 1
NSLog(@"Segment 1 preesed");
}else{
//do something with segment 2
NSLog(@"Segment 2 preesed");
}
}