我在下面声明了一个UIToolBar按钮：
UIToolbar *toolbar = [[UIToolbar alloc] init]; toolbar.frame = CGRectMake(0.0,0.0,self.view.frame.size.width,64.0);
解决方法
UILabel *lblTitle = [[UILabel alloc] initWithFrame:CGRectMake(50,50,150,20)]; lblTitle.backgroundColor = [UIColor clearColor]; lblTitle.textColor = [UIColor blackColor]; lblTitle.textAlignment = NSTextAlignmentLeft; [self.view addSubview:lblTitle]; UIBarButtonItem *typeField = [[UIBarButtonItem alloc] initWithCustomView:lblTitle]; toolBar.items = [NSArray arrayWithArray:[NSArray arrayWithObjects:backButton,spaceBar,lblTitle,nil]];
这会解决你的问题.
