public static class GridLayout.LayoutParams
extends ViewGroup.MarginLayoutParams

   ↳ android.view.ViewGroup.LayoutParams
     ↳ android.view.ViewGroup.MarginLayoutParams
       ↳ androidx.gridlayout.widget.GridLayout.LayoutParams

Layout information associated with each of the children of a GridLayout.

GridLayout supports both row and column spanning and arbitrary forms of alignment within each cell group. The fundamental parameters associated with each cell group are gathered into their vertical and horizontal components and stored in the rowSpec and columnSpec layout parameters. Specs are immutable structures and may be shared between the layout parameters of different children.

The row and column specs contain the leading and trailing indices along each axis and together specify the four grid indices that delimit the cells of this cell group.

The alignment properties of the row and column specs together specify both aspects of alignment within the cell group. It is also possible to specify a child's alignment within its cell group by using the setGravity(int) method.

The weight property is also included in Spec and specifies the proportion of any excess space that is due to the associated view.


Because the default values of the ViewGroup.LayoutParams.width and ViewGroup.LayoutParams.height properties are both ViewGroup.LayoutParams.WRAP_CONTENT, this value never needs to be explicitly declared in the layout parameters of GridLayout's children. In addition, GridLayout does not distinguish the special size value ViewGroup.LayoutParams.MATCH_PARENT from ViewGroup.LayoutParams.WRAP_CONTENT. A component's ability to expand to the size of the parent is instead controlled by the principle of flexibility, as discussed in GridLayout.


You should not need to use either of the special size values: WRAP_CONTENT or MATCH_PARENT when configuring the children of a GridLayout.

Default values

See GridLayout for a more complete description of the conventions used by GridLayout in the interpretation of the properties of this class.


Inherited constants


public GridLayout.Spec columnSpec

The spec that defines the horizontal characteristics of the cell group described by these layout parameters.

public GridLayout.Spec rowSpec

The spec that defines the vertical characteristics of the cell group described by these layout parameters.

Inherited fields

Public constructors

LayoutParams(GridLayout.Spec rowSpec, GridLayout.Spec columnSpec)

Constructs a new LayoutParams instance for this rowSpec and columnSpec.


Constructs a new LayoutParams with default values as defined in GridLayout.LayoutParams.

LayoutParams(ViewGroup.LayoutParams params)

LayoutParams(ViewGroup.MarginLayoutParams params)

LayoutParams(GridLayout.LayoutParams source)

Copy constructor.

LayoutParams(Context context, AttributeSet attrs)

Values not defined in the attribute set take the default values defined in GridLayout.LayoutParams.

Public methods

boolean equ