Layout_weight of Android attribute Series

Record the layout_weight attribute that you know now. It is not comprehensive, but correct!

Layout_weight indicates "weight". My understanding is to set a display size ratio for the component.
When layout_weight is set to a value, two cases may occur.
First, when the "layout_width" attribute of the component is "fill_parent", the smaller the value, the larger the component.
Type 2: When the "layout_width" attribute of the component is "wrap_content", the larger the value, the larger the component.

First case:
XML Code
<Linearlayout
Android: layout_weight = "1"
Android: layout_width = "fill_parent"
Android: layout_height = "wrap_content"
Android: Orientation = "horizontal"
Android: layout_marginleft = "10dp"
Android: layout_marginright = "10dp"
>
<Button
Android: Id = "@ + ID/btn_save"
Android: layout_width = "fill_parent"
Android: layout_height = "wrap_content"
Android: layout_weight = "1"
Android: text = "save"
/>

<Button
Android: Id = "@ + ID/btn_return"
Android: layout_width = "fill_parent"
Android: layout_height = "wrap_content"
Android: layout_weight = "4"
Android: text = "return"
/>
</Linearlayout>

Here, when the "save" button's layout_weight = 1, "Return" button's layout_weight = 4, layout_width = "fill_parent", the running effect is:
 

Case 2:
XML Code
<Linearlayout
Android: layout_weight = "1"
Android: layout_width = "fill_parent"
Android: layout_height = "wrap_content"
Android: Orientation = "horizontal"
Android: layout_marginleft = "10dp"
Android: layout_marginright = "10dp"
>
<Button
Android: Id = "@ + ID/btn_save"
Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content"
Android: layout_weight = "1"
Android: text = "save"
/>

<Button
Android: Id = "@ + ID/btn_return"
Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content"
Android: layout_weight = "4"
Android: text = "return"
/>
</Linearlayout>

Here, when the "save" button's layout_weight = 1, "Return" button's layout_weight = 4, layout_width = "wrap_content", the running effect is:
 

The above is my summary of the known situations. If any of them is incorrect or cannot be summarized, please kindly advise!

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