Câu hỏi phỏng vấn Xamarin
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What is ViewCell and How many types of built-in Cells are available?

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ViewCell in Xamarin.Forms

ViewCell is a specialized type of cell in Xamarin.Forms that allows developers to create custom cells for ListView and TableView controls. Unlike other built-in cells, ViewCell provides a blank slate, enabling developers to design a cell that looks exactly the way they want. This customization can be done using XAML or C# and allows for the inclusion of various UI elements such as labels, images, and buttons within the cell.

A ViewCell acts almost like any other "Page" in Xamarin.Forms, meaning it has a Content property where you can lay down your controls. This flexibility makes ViewCell ideal for scenarios where the built-in cells do not meet the specific design requirements of the application[1][2][5][6].

Types of Built-In Cells in Xamarin.Forms

Xamarin.Forms provides several built-in cell types that can be used directly in ListView and TableView controls. These built-in cells are designed to cover common use cases and can be easily customized to a certain extent. The main types of built-in cells are:

  1. TextCell:

    • Displays text in two separate text areas, typically used for showing simple information like contact details.
    • Example: Showing a person's name and phone number[2][3][6].
  2. ImageCell:

    • Combines an image with text, useful for scenarios where an image needs to be displayed alongside text.
    • Example: Displaying a product image with its name and description[2][6].
  3. SwitchCell:

    • Combines a label with an on-off switch, useful for settings or preferences where a toggle is needed.
    • Example: Enabling or disabling a feature in the app settings[2][6].
  4. EntryCell:

    • Combines a label with an entry field, useful for forms where user input is required.
    • Example: Collecting user information like email or phone number[2][6].
  5. ViewCell:

    • A blank sla...
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