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Added in API level 21

Toolbar.LayoutParams

public static class Toolbar.LayoutParams
extends ActionBar.LayoutParams

java.lang.Object
↳	android.view.ViewGroup.LayoutParams
	↳	android.view.ViewGroup.MarginLayoutParams
		↳	android.app.ActionBar.LayoutParams
			↳	android.widget.Toolbar.LayoutParams

工具栏的子视图的布局信息。

Toolbar.LayoutParams扩展了ActionBar.LayoutParams以兼容现有的ActionBar API。有关如何将工具栏用作活动的ActionBar的更多信息，请参阅Activity.setActionBar 。

Summary

XML attributes
`android:layout_gravity`	Standard gravity constant that a child supplies to its parent.

Inherited XML attributes

From class android.app.ActionBar.LayoutParams

From class android.view.ViewGroup.MarginLayoutParams

From class android.view.ViewGroup.LayoutParams

Inherited constants

From class android.view.ViewGroup.LayoutParams

Inherited fields

From class android.app.ActionBar.LayoutParams

From class android.view.ViewGroup.MarginLayoutParams

From class android.view.ViewGroup.LayoutParams

Public constructors
`Toolbar.LayoutParams(Context c, AttributeSet attrs)`
`Toolbar.LayoutParams(int width, int height)`
`Toolbar.LayoutParams(int width, int height, int gravity)`
`Toolbar.LayoutParams(int gravity)`
`Toolbar.LayoutParams(Toolbar.LayoutParams source)`
`Toolbar.LayoutParams(ActionBar.LayoutParams source)`
`Toolbar.LayoutParams(ViewGroup.MarginLayoutParams source)`
`Toolbar.LayoutParams(ViewGroup.LayoutParams source)`

Inherited methods

From class android.view.ViewGroup.MarginLayoutParams

From class android.view.ViewGroup.LayoutParams

From class java.lang.Object

XML attributes

android:layout_gravity

标准重力常数，小孩提供给其父母。定义子视图应如何在其封闭布局中定位在X轴和Y轴上。

必须是以下常量值中的一个或多个（用'|'分隔）。

Constant	Value	描述
`top`	0x30	Push object to the top of its container, not changing its size.
`bottom`	0x50	Push object to the bottom of its container, not changing its size.
`left`	0x03	Push object to the left of its container, not changing its size.
`right`	0x05	Push object to the right of its container, not changing its size.
`center_vertical`	0x10	Place object in the vertical center of its container, not changing its size.
`fill_vertical`	0x70	Grow the vertical size of the object if needed so it completely fills its container.
`center_horizontal`	0x01	Place object in the horizontal center of its container, not changing its size.
`fill_horizontal`	0x07	Grow the horizontal size of the object if needed so it completely fills its container.
`center`	0x11	Place the object in the center of its container in both the vertical and horizontal axis, not changing its size.
`fill`	0x77	Grow the horizontal and vertical size of the object if needed so it completely fills its container.
`clip_vertical`	0x80	Additional option that can be set to have the top and/or bottom edges of the child clipped to its container's bounds. The clip will be based on the vertical gravity: a top gravity will clip the bottom edge, a bottom gravity will clip the top edge, and neither will clip both edges.
`clip_horizontal`	0x08	Additional option that can be set to have the left and/or right edges of the child clipped to its container's bounds. The clip will be based on the horizontal gravity: a left gravity will clip the right edge, a right gravity will clip the left edge, and neither will clip both edges.
`start`	0x00800003	Push object to the beginning of its container, not changing its size.
`end`	0x00800005	Push object to the end of its container, not changing its size.

这对应于全局属性资源符号 layout_gravity 。

Public constructors