如何在UIToolBar中添加条形按钮

我创建了一个UIToolBar并希望添加三个项目，如联系人，日期和消息。 我尝试了但是我无法做到这一点。因为我是Objective C新手，所以请帮忙。 这是我的"ViewController.m"

 #import "ViewController.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; UIToolbar *toolbar = [[UIToolbar alloc] init]; toolbar.frame = CGRectMake(0, 414, self.view.frame.size.width, 44); UIBarButtonItem *contact = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemEdit target:self action:nil]; UIBarButtonItem *message = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:nil]; NSMutableArray *items = [[NSMutableArray alloc] initWithObjects:contact,message, nil]; [toolbar setItems:items animated:NO]; [items release]; [self.view addSubview:toolbar]; [toolbar release]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; } @end 

Answer 1

在下面的代码中，我添加了两个带FlexSpace的UIBarButton 。
你可以根据需要添加UIBarButton

 UIToolbar *Toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)]; Toolbar.barStyle = UIBarStyleBlackTranslucent; [Toolbar sizeToFit]; NSMutableArray *barItems = [[NSMutableArray alloc] init]; UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil]; [barItems addObject:flexSpace]; [flexSpace release]; 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]; 

按下方法是在按下按钮时调用

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

Answer 2

尝试这个…

 UIToolbar *myToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 300, 44)]; myToolbar.barStyle = UIBarStyleBlackOpaque; UIBarButtonItem *flexibleSpaceLeft = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]; UIBarButtonItem *contactBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(contact:)]; UIBarButtonItem *flexibleSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]; UIBarButtonItem *dateBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(date:)]; UIBarButtonItem *flexibleSpaceRight = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]; UIBarButtonItem *msgBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(message:)]; [myToolbar setItems:[NSArray arrayWithObjects: flexibleSpaceLeft, doneBtn, flexibleSpace, dateBtn, flexibleSpaceRight, msgBtn, nil]];