通过LongPress更改UITextField BackGround颜色

Question

All Boxes is UITextField s. I want change background color when user long press on UITextField .
Which TextField had a long press that UITextField color is change, not all UITextField s.

Answer 1

Try to use like this...

- (void)viewDidLoad
{
    [super viewDidLoad];
    UILongPressGestureRecognizer *gs = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(changeBackground:)];
    [textFld addGestureRecognizer:gs];
}

- (void)changeBackground:(UIGestureRecognizer *)gs
{
     [self.view endEditing:YES]; // Edited 

     UITextField *txtFld = (UITextField *)gs.view;

     [txtFld setBackgroundColor:[UIColor redColor]];
}

Answer 2

You can use UILongPressGestureRecognizer . Please note that one gesture recognizer can be attached to one view.
Here is code example

- (void)viewDidLoad
{
    [super viewDidLoad];
    //Array that holds your textfields
    NSArray *myTextFields;
    for (UITextField *textField in myTextFields) {
        //Creating UILongPressGestureRecognizer
        UILongPressGestureRecognizer *longPressGestureRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPress:)];
        //Attaching it to textfield
        [textField addGestureRecognizer:longPressGestureRecognizer];
    }
}
//Handling long press
- (void)handleLongPress:(UILongPressGestureRecognizer *)gestureRecognizer {
    UITextField *textField = (UITextField *)gestureRecognizer.view;
    textField.backgroundColor = [UIColor greenColor];
}