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];
}
