ios - ユーザーが画面をタップするたびに UITextField を作成する

Question

ユーザーがビュー内のどこをタップしたかを認識し、その場所に UITextField を作成できる iPad アプリを作成しています。これをプログラムする最も効率的な方法は何ですか? 複数のテキスト フィールドで機能しますか?

Answer 1

UIに関する限り、あなたのアイデアは少し不安定に聞こえると思いますが、おそらくUITapGestureRecognizer. コードは次のようになります。

// In viewDidLoad
UITapGestureRecognizer *tapRecognizer = [UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tappedInView:)];
[self.view addGestureRecognizer:tapRecognizer];


- (void)tappedInView:(UIGestureRecognizer *)gestureRecognizer
{
     CGPoint pointForTextField = [gestureRecognizer locationInView:gestureRecognizer.view];
     // Add the UITextField to your view. You could use the pointForTextField as either the origin or center of the text field
    UITextField *textField = [UITextField alloc] initWithFrame:CGRectMake(pointForTextField.x,pointForTextField.y,100,44)];
    [self.view addSubview:textField];
}

Answer 2

これを行う：

- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
   CGPoint locationPoint = [[touches anyObject] locationInView:self.view];
   if(locationPoint)
   {
     //add UITextField
     yourTextField.frame = CGRectMake(locationPoint.x, locationPoint.y, 40,40); //change height and width according
   }

}

Answer 3

//text field move where you touch in screen
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *myTouch = [touches anyObject];
    point = [myTouch locationInView:self.view];
    NSLog(@"%f,%f",point.x, point.y);
    yourTextField.frame = CGRectMake(point.x, point.y, width,height);
}