UIToolBar使用

1.在UINavigationController导航控制器中存在UIToolBar的，而且默认时被隐藏的。

• 需要设置self.navigationController.toolbarHidden = NO;
  （建议最好在viewWillApper：设置）
• 然后创建UIBarButtonItem，需要用到什么类型就加什么，系统自带了许多样式让你选择（还是自定义好看，符合国人的使用）
  UIBarButtonSystemItemDone -
  
  
  
  UIBarButtonSystemItemCancel -
  
  
  
  UIBarButtonSystemItemEdit -
  
  
  
  
  UIBarButtonSystemItemSave -
  
  
  
  
  UIBarButtonSystemItemAdd -
  
  
  
  
  UIBarButtonSystemItemFlexibleSpace - 可以让UIBarButtonItem靠右显示
  UIBarButtonSystemItemFixedSpace
  UIBarButtonSystemItemCompose -
  
  
  
  UIBarButtonSystemItemReply -
  
  
  
  UIBarButtonSystemItemAction -
  
  
  
  
  UIBarButtonSystemItemOrganize -
  
  
  
  
  UIBarButtonSystemItemBookmarks -
  
  
  
  
  UIBarButtonSystemItemSearch -
  
  
  
  
  UIBarButtonSystemItemRefresh -
  
  
  
  
  UIBarButtonSystemItemStop -
  
  
  
  
  UIBarButtonSystemItemCamera -
  
  
  
  
  UIBarButtonSystemItemTrash -
  
  
  
  
  UIBarButtonSystemItemPlay -
  
  
  
  
  UIBarButtonSystemItemPause -
  
  
  
  
  UIBarButtonSystemItemRewind -
  
  
  
  
  UIBarButtonSystemItemFastForward -
  
  
  
  
  UIBarButtonSystemItemUndo -
  
  
  
  
  UIBarButtonSystemItemRedo -
  
  
  
  
  UIBarButtonSystemItemPageCurl
• 通过[self setToolBarItems:@［items1，items。。。］]添加到ToolBar上
• 加了UIBarButtonSystemItemFlexibleSpace的Items，放在数组的最前面，就会靠右显示
  
  

  2.在键盘的inputAccessoryView上添加UIToolBar，通常来回收键盘

  ```objc
  UIToolbar * topView = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, kScreenWidth, 30)];
  [topView setBarStyle:UIBarStyleDefault];

  UIBarButtonItem * btnSpace = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];btn.frame = CGRectMake(4, 5, 40, 25);[btn setTitleColor:self.tintColor forState:UIControlStateNormal];[btn addTarget:self action:@selector(dismissKeyBoard) forControlEvents:UIControlEventTouchUpInside];[btn setTitle:@"完成" forState:UIControlStateNormal];UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc]initWithCustomView:btn];NSArray * buttonsArray = [NSArray arrayWithObjects:btnSpace,doneBtn,nil];[topView setItems:buttonsArray];[self.tf setInputAccessoryView:topView];

  ```出现的效果如下
  

  

  
  
  
  
  
  

链接：http://www.jianshu.com/p/9df841492f88
來源：简书