iOS中键盘 KeyBoard 上添加工具栏的方法

iOS中 键盘 KeyBoard 上怎么添加工具栏？

如图中所示 在键盘上面加一条工具栏

大致思路是提前创建好工具栏，在键盘弹出的时候将工具栏显示出来，在键盘消失的时候让工具栏隐藏

上代码

设置两个变量

UIView * _toolView; //工具栏
UITextField *textField;// 输入框 呼出键盘用 

创建工具栏 输入框 添加键盘弹出 消失的通知

- (void)viewDidLoad {
 [super viewDidLoad];
 // Do any additional setup after loading the view, typically from a nib.
 textField = [[UITextField alloc]initWithFrame:CGRectMake(10, 64, 120, 60)];
 textField.placeholder = @"测试";
 [self.view addSubview:textField];
 //增加监听，当键盘出现或改变时收出消息
 [[NSNotificationCenter defaultCenter] addObserver:self
            selector:@selector(keyboardWillShow:)
             name:UIKeyboardWillShowNotification
            object:nil];
 //增加监听，当键退出时收出消息
 [[NSNotificationCenter defaultCenter] addObserver:self
            selector:@selector(keyboardWillHide:)
             name:UIKeyboardWillHideNotification object:nil];
 //初始化工具栏
 _toolView = [[UIView alloc]init];
 _toolView.frame = CGRectMake(0, screen_Height, screen_Width, 50);
 [self.view addSubview:_toolView];
 UIButton *losebtn = [UIButton buttonWithType:UIButtonTypeCustom];
 losebtn.frame = CGRectMake(20, 0, 50, 50);
 [losebtn addTarget:self action:@selector(btnClick) forControlEvents:UIControlEventTouchUpInside];
 [losebtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
 [losebtn setTitle:@"收起" forState:UIControlStateNormal];
 [_toolView addSubview:losebtn];
 UIButton *imageBtn = [UIButton buttonWithType:UIButtonTypeCustom];
 [imageBtn setTitle:@"图片" forState:UIControlStateNormal];
 imageBtn.frame = CGRectMake(screen_Width-100, 0, 50, 50);
 [imageBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
 [imageBtn addTarget:self action:@selector(imageBtnClick) forControlEvents:UIControlEventTouchUpInside];
 [_toolView addSubview:imageBtn];
 UIButton *cameraBtn = [UIButton buttonWithType:UIButtonTypeCustom];
 [cameraBtn setTitle:@"相机" forState:UIControlStateNormal];
 cameraBtn.frame = CGRectMake(screen_Width-50, 0, 50, 50);
 [cameraBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
 [cameraBtn addTarget:self action:@selector(cameraBtnClick) forControlEvents:UIControlEventTouchUpInside];
 [_toolView addSubview:cameraBtn];
 UIButton *canclebtn = [UIButton buttonWithType:UIButtonTypeCustom];
 [canclebtn setTitle:@"取消" forState:UIControlStateNormal];
 canclebtn.frame = CGRectMake(screen_Width-150, 0, 50, 50);
 [canclebtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
 [canclebtn addTarget:self action:@selector(canclebtnBtnClick) forControlEvents:UIControlEventTouchUpInside];
 [_toolView addSubview:canclebtn];
} 

实现键盘通知的方法

#pragma mark 当键盘出现或改变时调用
- (void)keyboardWillShow:(NSNotification *)aNotification
{
 //键盘弹出时显示工具栏
 //获取键盘的高度
 NSDictionary *userInfo = [aNotification userInfo];
 NSValue *aValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];
 CGRect keyboardRect = [aValue CGRectValue];
 float keyBoardHeight = keyboardRect.size.height;
 // NSLog(@"%ld",(long)keyBoardHeight);
 [UIView animateWithDuration:0.1 animations:^{
  _toolView.frame = CGRectMake(0, screen_Height-keyBoardHeight-50, screen_Width, 50);
 }];
}
#pragma mark 当键退出时调用
- (void)keyboardWillHide:(NSNotification *)aNotification
{
 //键盘消失时 隐藏工具栏
 [UIView animateWithDuration:0.1 animations:^{
  _toolView.frame = CGRectMake(0, screen_Height+50, screen_Width, 50);
 }];
} 

给工具栏上的各个按钮实现点击事件

- (void)btnClick{
 [textField resignFirstResponder];
}
- (void)imageBtnClick{
}
- (void)cameraBtnClick{
}
- (void)canclebtnBtnClick{
} 

PS：下面看下iOS 键盘上方增加工具栏的代码。

具体代码如下所示：

UIToolbar *keyboardDoneButtonView = [[UIToolbar alloc] init];
[keyboardDoneButtonView sizeToFit];
UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithTitle:@"Done"
                style:UIBarButtonItemStyleBordered target:self
                action:@selector(doneClicked:)];
[keyboardDoneButtonView setItems:[NSArray arrayWithObjects:doneButton, nil]];
txtField.inputAccessoryView = keyboardDoneButtonView;