iphone - 导航栏上的自定义 UIBarButtonItem

Question

我想要导航栏上的两个自定义UIBarButtonItem..这UiBarButtonItem实际上应该是导航栏上两个UIBarButtonItem的组合.. 这些按钮应该像UISegmentControl..if一样相互组合，UISegmentControl因为我需要上一个和下一个按钮。

那么是否可以组合或自定义两个类似的按钮，例如UISegmentControl.

像这样的图像

Answer 1

CGRect frame = CGRectMake(0.0, self.view.bounds.size.height, self.view.bounds.size.width, 44.0);
fieldAccessoryView = [[UIToolbar alloc] initWithFrame:frame];
fieldAccessoryView.barStyle = UIBarStyleBlackOpaque;
fieldAccessoryView.tag = 200;

[fieldAccessoryView setBarStyle:UIBarStyleBlack];

UIBarButtonItem *spaceButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone  target:self action:@selector(done:)];

UISegmentedControl* segmentedControl = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:NSLocalizedString(@"Previous", @""), NSLocalizedString(@"Next", @""), nil]];
[segmentedControl addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];
segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
[segmentedControl setMomentary:YES];
UIBarButtonItem *segmentButton = [[UIBarButtonItem alloc] initWithCustomView:segmentedControl];

[fieldAccessoryView setItems:[NSArray arrayWithObjects:segmentButton, spaceButton, doneButton, nil] animated:NO];
[segmentButton release];
[spaceButton release];
[doneButton release];
[segmentedControl release];

Answer 2

I hope this help you..

UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:
                                        [NSArray arrayWithObjects:
[NSString stringWithString:@"First"],
[NSString stringWithString:@"Second"],
nil]];


//just customize this

[segmentControl setImage:[UIImage imageNamed:@"YOUR_IMAGE1.png"] forSegmentAtIndex:0];
[segmentControl setImage:[UIImage imageNamed:@"YOUR_IMAGE2.png"] forSegmentAtIndex:1];


[segmentedControl setFrame:[self.navigationController.toolbar bounds]];

[self.navigationController.toolbar addSubview:segmentedControl];
[segmentedControl release];

这是我的粗略想法..如果您发现实施它有任何困难..让我知道

Answer 3

以下代码描述了如何添加UIBarButtonItem.UINavigationBar

UIBarButtonItem在你的情况下添加UIBarButtonSystemItemFlexibleSpace看起来像UISegmentControl.

UIToolbar *Toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
    [Toolbar sizeToFit];

     NSMutableArray *barItems = [[NSMutableArray alloc] init];
    UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
    [barItems addObject:flexSpace];

    UIBarButtonItem *btnCancel = [[UIBarButtonItem alloc] initWithTitle:@"Cancel" style:UIBarButtonItemStyleBordered target:self action:@selector(Cancel)];
    [barItems addObject:btnCancel];

    UIBarButtonItem *btnDone = [[UIBarButtonItem alloc] initWithTitle:@"Done" style:UIBarButtonItemStyleBordered target:self action:@selector(done)];
    [barItems addObject:btnDone];

    [Toolbar setItems:barItems animated:YES];

UIBarButtonItem *twoButtons = [[UIBarButtonItem alloc] initWithCustomView:Toolbar];
self.navigationItem.rightBarButtonItem = twoButtons;

// UIBarButtonItem 的方法

-(void)Cancel
{
  // Write Code for Cancel Method
}

-(void)done
{
  // Write Code for Done Method
}

Answer 4

试试这个代码我在一段时间之前从一些答案中得到了这个代码，我编辑它并在我的应用程序中使用它......试试这个..

NSArray *segItemsArray = [NSArray arrayWithObjects: @"One", @"Two", @"Three", nil];
UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:segItemsArray];
segmentedControl.frame = CGRectMake(0, 0, 200, 30);
segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;
segmentedControl.selectedSegmentIndex = 0;// set your default selected button(view)

UIBarButtonItem *segmentedControlButtonItem = [[UIBarButtonItem alloc] initWithCustomView:(UIView *)segmentedControl];

UIBarButtonItem *flexibleSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];

NSArray *barArray = [NSArray arrayWithObjects: flexibleSpace, segmentedControlButtonItem, flexibleSpace, nil];

[self setToolbarItems:barArray];
[self.navigationController setToolbarHidden:NO animated:YES];

我希望这对你有帮助....

Answer 5

我希望这对你有帮助..

UISegmentedControl *tabNavigation = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:@"Previous", @"Next", nil]];
tabNavigation.segmentedControlStyle = UISegmentedControlStyleBar;
[tabNavigation setEnabled:YES forSegmentAtIndex:0];
[tabNavigation setEnabled:YES forSegmentAtIndex:1];
tabNavigation.momentary = YES;
[tabNavigation addTarget:self action:@selector(segmentedControlHandler:) forControlEvents:UIControlEventValueChanged];
UIBarButtonItem *barSegment = [[UIBarButtonItem alloc] initWithCustomView:tabNavigation];
UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];

 keyboardDoneButtonView = [[UIToolbar alloc] init ];//WithFrame:CGRectMake(0, 480, 320, 44)];

 keyboardDoneButtonView.barStyle = UIBarStyleBlackTranslucent;
 keyboardDoneButtonView.translucent = YES;
 [keyboardDoneButtonView setFrame:CGRectMake(0, 480, 320, 44)];
 [keyboardDoneButtonView sizeToFit];
 [keyboardDoneButtonView setItems:[NSArray arrayWithObjects:barSegment,flexSpace,doneButton, nil]];

示例文本：

 self.txtGivenName.inputAccessoryView=keyboardDoneButtonView;
 self.txtLastName.inputAccessoryView=keyboardDoneButtonView;



- (void)segmentedControlHandler:(id)sender
 {
if (sender){
    switch ([(UISegmentedControl *)sender selectedSegmentIndex]) {
        case 0:
        {
            [self previousClicked]; 
            break;
        }
        case 1:
        {
            [self nextClicked];
            break;
        }
        default:
            break;
    }
}

}

  -(void)previousClicked{
UIResponder* nextResponder = [sclView viewWithTag:selected-1];
if (nextResponder)
    {
    [nextResponder becomeFirstResponder];
    }

}

  -(void)nextClicked{
UIResponder* nextResponder = [sclView viewWithTag:selected+1];
if (nextResponder)
    {
    [nextResponder becomeFirstResponder];
    }

}