IOS数字键盘加完成按钮

1.xib上的名为valueTextField的文本输入框的属性改为如下情形

2.插座变量

@property (weak, nonatomic) IBOutlet UITextField *valueTextField;

3.取消第一响应者

-(void)numberFieldCancle{
    
    [self.valueTextField resignFirstResponder];
    
}

3.生成ToolBar

- (UIToolbar *)addToolbar
{
    
    UIToolbar *toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, CGRectGetWidth(self.view.frame), 50)];
//    UIToolbar *toolbar =[[UIToolbar alloc] init];
    UIBarButtonItem *bar = [[UIBarButtonItem alloc] initWithTitle:@"完成" style:UIBarButtonItemStylePlain target:self action:@selector(numberFieldCancle)];
    toolbar.items = @[bar];
    
    return toolbar;
}

4.键盘升起时给键盘添加按钮

-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
    if (textField==self.valueTextField) {
    
        self.valueTextField.inputAccessoryView=[self addToolbar];
    }
    return YES;
}

5.注意哦，这个.m要遵守UITextFieldDelegate协议

@interface BNRItemDetailViewController ()<UITextFieldDelegate>