Recall in the Arithmetic MVC example from the notes, that there was the following method within ArithmeticView:

What was the purpose of this method?

Question

Recall in the Arithmetic MVC example from the notes, that there was the following method within ArithmeticView:

What was the purpose of this method?

BlackTom AI · Accepted Answer

In this question, we examine the purpose of the private void configTextFieldForInts(TextField field) method from the Arithmetic MVC example.
Option 1: 'To convert the text in a TextField to an integer and update the TextField accordingly.' This is not what the code does; the method uses a TextFormatter to control input, not to perform a conversion and update the field with the integer value.
Option 2: 'To format the text in a TextField to have a specific numeric format.' The code does not apply any numeric formatting (like fixed decimals or padding); it only filters input to numeric characters, so this is incorrect.
Option 3: 'To configure a TextField to accept only integer input and filter out non-numeric characters.' This matches the essence of the method: it installs a TextFormatter that allows only characters that form an integer (digits, and optionally a minus sign), thereby preventing non-numeric input.
Option 4: 'To set the text of a TextField to an integer value.' The method does not set or replace the TextField's text with a specific value; it intercepts and validates user input in real time, not perform a direct assignment.
Thus, the intended purpose is to restrict the TextField input to integers by filtering out non-numeric characters, aligning with option 3.

Recall in the Arithmetic MVC example from the notes, that there was the following method within ArithmeticView: What was the purpose of this method?

查看解析

登录即可查看完整答案

类似问题

Multi-layered validation (client-side, server-side, and database-level) is a critical best practice in full-stack development. What is the most crucial reason for this multi-layered approach, rather than relying on just one or two layers?

Which two of the following methods can be used to patch the vulnerability in the code.

Looking at the block below, what will happen if a mark of 50 is entered?

The purpose of validation is to

Which type of validation check can be used to check if a password is at least 8 characters long?

The pseudocode above checks to see if the email address input contains an @ symbol. This is an example of which type of validation check?

Identify the type of validation check that will help prevent input error in the following scenario: A user needs to enter a valid email address (must have an @ symbol).

True or false: The validation method below will ensure the phone number entered is 10 characters long.

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单