将标签添加到UITextField [英] Add label to UITextField

问题描述

有问题 663830 ，Isaac询问如何在文本字段中添加按钮。有人可以显示代码来为.rightView属性添加标签吗？

In question 663830, Isaac asks about adding a button to a text field. Can someone show code to add a label to the .rightView property?

或者，是否有更好的方法在文本字段中包含永久文本？

Or, is there some better way to include 'permanent' text in a text field?

这是一个计算器，包括字段中的单位（mg，kg等），而不必在文本字段之外维护标签。类似于永久占位符文本？

This is for a calculator that would include units in the field (mg, kg, etc.) without having to maintain a label outside of the text field. Sort of like permanent placeholder text?

谢谢，
Chris

Thanks, Chris

推荐答案

快速而脏的代码：

- (void)viewDidLoad {
    [super viewDidLoad];
    UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(100, 100, 100, 40)];
    textField.borderStyle = UITextBorderStyleLine;
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 40, 40)];
    label.text = @"mg";
    label.backgroundColor = [UIColor colorWithWhite:0.0 alpha:0.0];
    textField.rightViewMode = UITextFieldViewModeAlways;
    textField.rightView = label;
    [self.view addSubview:textField];
    [label release];
    [textField release];
}

请注意，我正在从ViewController添加子视图，你可以这样做从视图来看。

Note that I'm adding the subview from the ViewController, you can do it from the view as well.

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