15

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，它将启动 iPhone 联系人应用程序。我将非常感谢任何代码示例。谢谢

在此处输入图像描述

4

6 回答 6

9

您可以为此使用以下代码：

- (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 中添加了该字段，则可以使用上述方法。

如果是通过代码创建的，需要在创建时添加如下代码：

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;
于 2013-01-18T05:22:16.480 回答
8

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{

}
于 2013-01-18T05:18:14.477 回答
8

使用以下方法添加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;
}
于 2013-01-18T05:25:15.507 回答
3

使用rightView的属性UITextField。在textFieldDidBeginEditing:委托中创建按钮，其中包含您想要并设置为的操作rightView。并textFieldDidEndEditing:设置为零rightView

于 2013-01-18T05:18:32.030 回答
1

你也可以去自定义视图蚂蚁然后添加子视图。然后你隐藏它。只有当用户点击它时它才会可见

于 2013-01-18T05:21:59.720 回答
0 
    self.locationName.clearButtonMode = UITextFieldViewModeWhileEditing;
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
    button.frame = CGRectMake(0, 0, 30, 30);
    [button setImage:[UIImage imageNamed:@"goButtonIcon.png"] forState:UIControlStateNormal];
    [button addTarget:self action:@selector(goButtonClicked:) forControlEvents:UIControlEventTouchUpInside];

    self.locationName.rightView = button;
    self.locationName.rightViewMode = UITextFieldViewModeUnlessEditing;

然后调用这个方法：

-(IBAction)goButtonClicked:(id)sender{

}

self.locationName -------> UITextField 参考（在 ViewDidload 中可以写这段代码）

于 2016-07-21T05:07:55.823 回答