如何给navigationItem 设置title 和左右按钮

                                                   如何给navigation bar 设置title 和左右按钮

 

1. 如何设置title

    self.navigationItem.title = @"Hello World"; 

 

 2. 如何设置  leftBatButtonItem和 rightBarButtonItem

    UIBarButtonItem *leftButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"左边按钮" style:UIBarButtonItemStylePlain target:self action:@selector(OnLeftButton:)];self.navigationItem.leftBarButtonItem = leftButtonItem;[leftButtonItem release];UIBarButtonItem *rightButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"右边按钮" style:UIBarButtonItemStylePlain target:self action:@selector(OnRightButton:)];self.navigationItem.rightBarButtonItem = rightButtonItem;[rightButtonItem release];