ABPersonViewController和隐藏取消按钮

Question

默认情况下，ABPersonViewController会在右侧按钮栏的位置显示一个“取消”按钮。如何隐藏/清除该项目？必备代码示例如下：

ABPersonViewController *picker = [[[ABPersonViewController alloc] init] autorelease];
picker.personViewDelegate = self;
picker.displayedPerson = aPerson;
picker.allowsEditing = NO;

谢谢。

Answer 1

解决了！子类ABPersonViewController，覆盖-(void) viewDidLoad，调用超级类，然后将rightBarButtonItem设置为nil。太棒了！

@interface PersonViewController : ABPersonViewController
@end

@implementation PersonViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    self.navigationItem.rightBarButtonItem = nil;
}

@end

Answer 2

简单得多：

ABPersonViewController *picker = [[[ABPersonViewController alloc] init] autorelease];
picker.personViewDelegate = self;
picker.displayedPerson = aPerson;
picker.allowsEditing = NO;
[self.navigationController pushViewController:picker animated:YES];
picker.navigationItem.rightBarButtonItem = nil; // remove "Cancel" button
[picker release];

(只需在pushViewController后面添加rightBarButtonItem = nil。)