添加按钮到uitextfield

Question

当我在文本框内单击时,如何向UITextField添加加号按钮,如下面的屏幕所示？单击此按钮时,将启动iPhone联系人应用程序.我非常感谢任何代码示例.谢谢

Answer 1

您可以使用以下代码:

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
  if(textField == yourFirstTextField)
  {
      UIButton *addButton = [UIButton buttonWithType:UIButtonTypeCustom];
      [addButton setImage:[UIImage imageNamed:@"addImage.png"] forState:UIControlStateNormal];
      [addButton addTarget:self action:@selector(yourActionHere) forControlEvents:UIControlEventTouchUpInside];
      textField.rightViewMode = UITextFieldViewModeWhileEditing;
      textField.rightView = addButton;
  }
}

如果在IB中添加了字段,则可以使用上述方法.

如果您是通过代码创建的,则需要在创建时添加以下代码:

UIButton *addButton = [UIButton buttonWithType:UIButtonTypeCustom];
[addButton setImage:[UIImage imageNamed:@"addImage.png"] forState:UIControlStateNormal];
[addButton addTarget:self action:@selector(yourActionHere) forControlEvents:UIControlEventTouchUpInside];
textField.rightViewMode = UITextFieldViewModeWhileEditing;
textField.rightView = addButton;

Answer 2

以下代码用于在UITextField中添加按钮.

-(void)ViewDidLoad{
    UITextField *txt = [[UITextField alloc]initWithFrame:CGRectMake(140, 120, 160, 40)];
    txt.returnKeyType = UIReturnKeyDone;
    txt.placeholder = @"Enter or Mobile Number";
    [txt setBorderStyle:UITextBorderStyleRoundedRect];
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
    [button setImage:[UIImage imageNamed:@"crossImg.png"] forState:UIControlStateNormal];
    button.imageEdgeInsets = UIEdgeInsetsMake(0, -16, 0, 0);
    [button addTarget:self action:@selector(clearText:) forControlEvents:UIControlEventTouchUpInside];
    txt.rightView = button;
    txt.rightViewMode = UITextFieldViewModeAlways;
    [self.view addSubview:txt];
}

-(IBAction)clearText:(id)sender{

}

Answer 3

使用以下方法进行添加 UIButton

[self.txtField addTarget:self action:@selector(textFieldDidChange:) forControlEvents:UIControlEventEditingChanged];

- (BOOL) textFieldDidChange:(UITextField *)textField
{
    UIButton *btnColor = [UIButton buttonWithType:UIButtonTypeCustom];
    [btnColor addTarget:self action:@selector(btnColorPressed:) forControlEvents:UIControlEventTouchUpInside];
    btnColor.frame = CGRectMake(self.txtTag.bounds.size.width - 50, 5, 25, 25);
    [btnColor setBackgroundImage:[UIImage imageNamed:@"PaintPickerButton.png"] forState:UIControlStateNormal];
    [self.txtTag addSubview:btnColor];

    return YES;
}

或写

-(BOOL) textFieldShouldBeginEditing:(UITextField *)textField
{
    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationBeginsFromCurrentState:YES];
    [UIView setAnimationDuration:0.3f];
    // self.scrollView.frame = CGRectMake(0, 35, self.view.bounds.size.width, self.view.bounds.size.height - 250);
    [UIView commitAnimations];

    UIButton *btnColor = [UIButton buttonWithType:UIButtonTypeCustom];
    [btnColor addTarget:self action:@selector(btnColorPressed:) forControlEvents:UIControlEventTouchUpInside];
    btnColor.frame = CGRectMake(150, 5, 25, 25);
    [btnColor setBackgroundImage:[UIImage imageNamed:@"PaintPickerButton.png"] forState:UIControlStateNormal];
    [self.txtField addSubview:btnColor];

    return YES;
}