What Are the Differences Between Linearlayout, Relativelayout, and Absolutelayout

What are the differences between LinearLayout, RelativeLayout, and AbsoluteLayout?

LinearLayout means you can align views one by one (vertically/ horizontally).

RelativeLayout means based on relation of views from its parents and other views.

ConstraintLayout is similar to a RelativeLayout in that it uses relations to position and size widgets, but has additional flexibility and is easier to use in the Layout Editor.

WebView to load html, static or dynamic pages.

FrameLayout to load child one above another, like cards inside a frame, we can place one above another or anywhere inside the frame.

deprecated - AbsoluteLayout means you have to give exact position where the view should be.

For more information, please check this address https://developer.android.com/guide/topics/ui/declaring-layout#CommonLayouts

What is the difference between linear and relative layout?

Linear layouts put every child, one after the other, in a line, either horizontally or vertically. With a relative layout you can give each child a LayoutParam that specifies exactly where is should go, relative to the parent or relative to other children.

Which layout is better in terms of Performance in Android? RelativeLayout or Linear Layout?

RelativeLayout is measured twice, so LinearLayout has better performance when used right.

Best of LinearLayout, RelativeLayout and of latest ConstraintLayout

I think LinearLayout will add a hierarchy of nodes which will take more time to render than RelativeLayout or ContraintLayout, is it right?

Nested LinearLayout widgets can be slower to render. It is not guaranteed that it will be slower to render. Using nested weights is one known way to get a slow set of nested LinearLayout widgets.

Why android is considering ContraintLayout to use more than RelativeLayout and LinearLayout?

ConstraintLayout handles more scenarios than do LinearLayout and RelativeLayout. ConstraintLayout is easier for IDEs to support via drag-and-drop than is RelativeLayout.

Even i can make same layout in LinearLayout or RelativeLayout

There are a variety of scenarios that would be difficult to implement in LinearLayout or RelativeLayout, but that ConstraintLayout can handle easily, such as:

• Circular positioning

• Minimum and maximum size for the ConstraintLayout itself (to help wrap_content from getting too small or too large)

• Having a child maintain a specific aspect ratio

• Implementing some varieties of chains

• Anchoring children to artificial rules-based lines, such as Guideline and Barrier

Is a RelativeLayout more expensive than a LinearLayout?

In a talk at Google I/O 2013 (Writing Custom Views for Android), Romain Guy clarified the misunderstanding that caused everyone to start using RelativeLayouts for everything. A RelativeLayout always has to do two measure passes. Overall it is negligible as long as your view hierarchy is simple. But if your hierarchy is complex, doing an extra measure pass could potentially be fairly costly. Also if you nest RelativeLayouts, you get an exponential measurement algorithm.

https://www.youtube.com/watch?v=NYtB6mlu7vA&t=1m41s

https://www.youtube.com/watch?v=NYtB6mlu7vA&t=38m04s

Differences between ConstraintLayout and RelativeLayout

The intention of ConstraintLayout is to optimize and flatten the view hierarchy of your layouts by applying some rules to each view to avoid nesting.

The Rules are similar to RelativeLayout, for example setting the bottom edge to the bottom of some other view.

app:layout_constraintBottom_toBottomOf="@+id/view1"

Unlike RelativeLayout, ConstraintLayout offers a bias value that is used to position a view in terms of 0% and 100% horizontal and vertical offset relative to the handles (marked with a red circle). These percentages (and fractions) offer seamless positioning of the view across different screen densities and sizes.

app:layout_constraintHorizontal_bias="0.33" <!-- from 0.0 to 1.0 -->
app:layout_constraintVertical_bias="0.53" <!-- from 0.0 to 1.0 -->

The Baseline handle (a long pipe with rounded corners, below the circle handle) is used to align the content of the view with another view reference.

Square handles (on each corner of the view) are used to resize the view in dps.

This is totally opinion based and my impression of ConstraintLayout

---

Related Topics