使用UIToolBar给textFiled的inputView添加按钮

首先，textField的inputView属性可以指定其他视图代替keyBoard弹出。

// 创建工具条
UIToolbar *toolBar = [[UIToolbar alloc] init];
// 设置工具条的颜色
  toolBar.barTintColor = [UIColor cyanColor];
// 设置工具条的frame
toolBar.frame = CGRectMake(0, 0, self.view.frame.size.width, 44);
// 给工具栏添加按钮
UIBarButtonItem *item1 = [[UIBarButtonItem alloc] initWithTitle:@"上一个" style:UIBarButtonItemStylePlain target:self action:@selector(itemAction)];
UIBarButtonItem *item2 = [[UIBarButtonItem alloc] initWithTitle:@"下一个" style:UIBarButtonItemStylePlain target:self action:@selector(itemAction)];
UIBarButtonItem *flexibleItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
UIBarButtonItem *item3 = [[UIBarButtonItem alloc] initWithTitle:@"完成" style:UIBarButtonItemStylePlain target:self action:@selector(itemAction)];
toolBar.items = @[item1, item2, flexibleItem, item3];
self.textFiled.inputAccessoryView = toolBar;