Android Devices & Layouts Quiz
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Questions and Answers

What is the recommended default layout for Android?

  • RelativeLayout
  • FrameLayout
  • LinearLayout
  • ConstraintLayout (correct)
  • Deeply nested layouts improve UI responsiveness.

    False (B)

    What does dp stand for in the context of Android layouts?

    density-independent pixels

    Views in Android are measured in ______.

    <p>density-independent pixels</p> Signup and view all the answers

    Which screen-density bucket is used for high density?

    <p>hdpi (D)</p> Signup and view all the answers

    What are constraints in ConstraintLayout?

    <p>Restrictions or limitations on the properties of a View.</p> Signup and view all the answers

    Match the screen-density buckets with their descriptions:

    <p>ldpi = Low density (~120dpi) mdpi = Medium density (~160dpi) hdpi = High density (~240dpi) xhdpi = Extra-high density (~320dpi) xxhdpi = Extra-extra-high density (~480dpi) xxxhdpi = Extra-extra-extra-high density (~640dpi)</p> Signup and view all the answers

    Study Notes

    • The recommended default layout for Android is ConstraintLayout.

    Deeply Nested Layouts and UI Responsiveness

    • Deeply nested layouts can negatively impact UI responsiveness.

    dp in Android Layouts

    • dp stands for "density-independent pixels".
    • "Density-independent pixel" means that the size of the pixel is independent of the screen density.

    Android View Measurement Unit

    • Views in Android are measured in pixels (px).

    High Density Screen-Density Bucket

    • The screen-density bucket used for high density is "hdpi".

    Constraints in ConstraintLayout

    • Constraints in ConstraintLayout are guidelines that define how a view should be positioned and sized.

    Screen-Density Bucket Descriptions

    • ldpi (low density): typically used for low-resolution screens.
    • mdpi (medium density): the baseline screen density and the default for most Android devices.
    • hdpi (high density): typically used for high-resolution screens.
    • xhdpi (extra high density): used for very high-resolution screens.
    • xxhdpi (extra extra high density): used for extremely high-resolution screens.
    • xxxhdpi (extra extra extra high density): used for the highest-resolution screens.

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    Lesson 5: Layouts PDF

    Description

    Test your knowledge on Android devices and layout design. This quiz covers essential concepts such as screen density, density-independent pixels, and the view rendering cycle. Perfect for developers looking to improve their skills in creating adaptable user interfaces.

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