iOS中键盘 KeyBoard 上添加工具栏的方法

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

- (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]; } 

#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);  }]; } 

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

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;