Vertical LinearLinear vertical
The LinearLayout is a group of views that directs all kids in a singular orientation, vertical or vertical. Hint: For better tool usage and better results, you should create your own layouts with ConstraintLayout instead. A LinearLayout is piled up so that a vertical listing has only one kid per line, no matter how broad it is, and a HorizontalListing has only one line high (the largest kid's level plus padding).
LinearLayout respect the distances between kids and the gravitational force (right, middle or right orientation) of each of them. A " importance value " is assigned to a display to indicate how much room it should take up on the display. Increasing the value of the mass allows it to extend to fill the remainder of the overall area.
Subgroups can specify a value for weights, and then the amount of room left in the visibility group is allocated to the kids in relation to their specified weights. The standard zero is zero. It is also possible to design linear layout where the subordinate items take up different amount of room on the screen: When there are three text boxes and two of them have a 1 rating while the other one has no rating, the third text box does not expand without rating.
Instead, this third text box only fills the area needed by its contents. On the other side, the other two text boxes extend evenly to fill the room left after all three boxes have been used. When there are three text boxes and two of them have a 1 weighting, while the third box gets a 2 weighting (instead of 0), it is now more important than the other two, so it gets half of the entire amount of room left, while the first two divide the remainder evenly.
Below is a piece of coding that shows how you can use layouts weightings in a Sending Message action. To, Subject line, and Submit buttons each take only the amount you need. "match_parent " "0dp" "1" "top" "@string/message" "100dp" "wrap_content" "right" "@string/send" For more information on the properties available to each subview of a LinearLayout,