Layout Props
More detailed examples about those properties can be found on the Layout with Flexbox page.
Example
The following example shows how different properties can affect or shape a React Native layout. You can try for example to add or remove squares from the UI while changing the values of the property flexWrap.
Reference
Props
alignContent
alignContent controls how rows align in the cross direction, overriding the alignContent of the parent. See https://developer.mozilla.org/en-US/docs/Web/CSS/align-content for more details.
| Type | Required |
|---|---|
| enum('flex-start', 'flex-end', 'center', 'stretch', 'space-between', 'space-around') | No |
alignItems
alignItems aligns children in the cross direction. For example, if children are flowing vertically, alignItems controls how they align horizontally. It works like align-items in CSS (default: stretch). See https://developer.mozilla.org/en-US/docs/Web/CSS/align-items for more details.
| Type | Required |
|---|---|
| enum('flex-start', 'flex-end', 'center', 'stretch', 'baseline') | No |
alignSelf
alignSelf controls how a child aligns in the cross direction, overriding the alignItems of the parent. It works like align-self in CSS (default: auto). See https://developer.mozilla.org/en-US/docs/Web/CSS/align-self for more details.
| Type | Required |
|---|---|
| enum('auto', 'flex-start', 'flex-end', 'center', 'stretch', 'baseline') | No |
aspectRatio
Aspect ratio controls the size of the undefined dimension of a node. See https://developer.mozilla.org/en-US/docs/Web/CSS/aspect-ratio for more details.
- On a node with a set width/height, aspect ratio controls the size of the unset dimension
- On a node with a set flex basis, aspect ratio controls the size of the node in the cross axis if unset
- On a node with a measure function, aspect ratio works as though the measure function measures the flex basis
- On a node with flex grow/shrink, aspect ratio controls the size of the node in the cross axis if unset
- Aspect ratio takes min/max dimensions into account
| Type | Required |
|---|---|
| number | No |
borderBottomWidth
borderBottomWidth works like border-bottom-width in CSS. See https://developer.mozilla.org/en-US/docs/Web/CSS/border-bottom-width for more details.
| Type | Required |
|---|---|
| number | No |
borderEndWidth
When direction is ltr, borderEndWidth is equivalent to borderRightWidth. When direction is rtl, borderEndWidth is equivalent to borderLeftWidth.
| Type | Required |
|---|---|
| number | No |
borderLeftWidth
borderLeftWidth works like border-left-width in CSS. See https://developer.mozilla.org/en-US/docs/Web/CSS/border-left-width for more details.
| Type | Required |
|---|---|
| number | No |
borderRightWidth
borderRightWidth works like border-right-width in CSS. See https://developer.mozilla.org/en-US/docs/Web/CSS/border-right-width for more details.
| Type | Required |
|---|---|
| number | No |
borderStartWidth
When direction is ltr, borderStartWidth is equivalent to borderLeftWidth. When direction is rtl, borderStartWidth is equivalent to borderRightWidth.
| Type | Required |
|---|---|
| number | No |
borderTopWidth
borderTopWidth works like border-top-width in CSS. See https://developer.mozilla.org/en-US/docs/Web/CSS/border-top-width for more details.
| Type | Required |
|---|---|
| number | No |
borderWidth
borderWidth works like border-width in CSS. See https://developer.mozilla.org/en-US/docs/Web/CSS/border-width for more details.
| Type | Required |
|---|---|
| number | No |
bottom
bottom is the number of logical pixels to offset the bottom edge of this component.
It works similarly to bottom in CSS, but in React Native you must use points or percentages. Ems and other units are not supported.
See https://developer.mozilla.org/en-US/docs/Web/CSS/bottom for more details of how bottom affects layout.
| Type | Required |
|---|---|
| number, string | No |
direction
direction specifies the directional flow of the user interface. The default is inherit, except for root node which will have value based on the current locale. See https://yogalayout.com/docs/layout-direction for more details.
| Type | Required | Platform |
|---|---|---|
| enum('inherit', 'ltr', 'rtl') | No | iOS |
display
display sets the display type of this component.
It works similarly to display in CSS but only supports 'flex' and 'none'. 'flex' is the default.
| Type | Required |
|---|---|
| enum('none', 'flex') | No |
end
When the direction is ltr, end is equivalent to right. When the direction is rtl, end is equivalent to left.
This style takes precedence over the left and right styles.
| Type | Required |
|---|---|
| number, string | No |
flex
In React Native flex does not work the same way that it does in CSS. flex is a number rather than a string, and it works according to the Yoga layout engine.
When flex is a positive number, it makes the component flexible, and it will be sized proportional to its flex value. So a component with flex set to 2 will take twice the space as a component with flex set to 1. flex: <positive number> equates to flexGrow: <positive number>, flexShrink: 1, flexBasis: 0.
When flex is 0, the component is sized according to width and height, and it is inflexible.
When flex is -1, the component is normally sized according to width and height. However, if there's not enough space, the component will shrink to its minWidth and minHeight.
flexGrow, flexShrink, and flexBasis work the same as in CSS.
| Type | Required |
|---|---|
| number | No |
flexBasis
flexBasis is an axis-independent way of providing the default size of an item along the main axis. Setting the flexBasis of a child is similar to setting the width of that child if its parent is a container with flexDirection: row or setting the height of a child if its parent is a container with flexDirection: column. The flexBasis of an item is the default size of that item, the size of the item before any flexGrow and flexShrink calculations are performed.
| Type | Required |
|---|---|
| number, string | No |
flexDirection
flexDirection controls which directions children of a container go. row goes left to right, column goes top to bottom, and you may be able to guess what the other two do. It works like flex-direction in CSS, except the default is column. See https://developer.mozilla.org/en-US/docs/Web/CSS/flex-direction for more details.
| Type | Required |
|---|---|
| enum('row', 'row-reverse', 'column', 'column-reverse') | No |
flexGrow
flexGrow describes how any space within a container should be distributed among its children along the main axis. After laying out its children, a container will distribute any remaining space according to the flex grow values specified by its children.
flexGrow accepts any floating point value >= 0, with 0 being the default value. A container will distribute any remaining space among its children weighted by the children’s flexGrow values.
| Type | Required |
|---|---|
| number | No |
flexShrink
flexShrink describes how to shrink children along the main axis in the case in which the total size of the children overflows the size of the container on the main axis. flexShrink is very similar to flexGrow and can be thought of in the same way if any overflowing size is considered to be negative remaining space. These two properties also work well together by allowing children to grow and shrink as needed.
flexShrink accepts any floating point value >= 0, with 0 being the default value. A container will shrink its children weighted by the children’s flexShrink values.
| Type | Required |
|---|---|
| number | No |
flexWrap
flexWrap controls whether children can wrap around after they hit the end of a flex container. It works like flex-wrap in CSS (default: nowrap). See https://developer.mozilla.org/en-US/docs/Web/CSS/flex-wrap for more details. Note it does not work anymore with alignItems: stretch (the default), so you may want to use alignItems: flex-start for example (breaking change details: https://github.com/facebook/react-native/releases/tag/v0.28.0).
| Type | Required |
|---|---|
| enum('wrap', 'nowrap', 'wrap-reverse') | No |
height
height sets the height of this component.
It works similarly to height in CSS, but in React Native you must use points or percentages. Ems and other units are not supported. See https://developer.mozilla.org/en-US/docs/Web/CSS/height for more details.
| Type | Required |
|---|---|
| number, string | No |
justifyContent
justifyContent aligns children in the main direction. For example, if children are flowing vertically, justifyContent controls how they align vertically. It works like justify-content in CSS (default: flex-start). See https://developer.mozilla.org/en-US/docs/Web/CSS/justify-content for more details.
| Type | Required |
|---|---|
| enum('flex-start', 'flex-end', 'center', 'space-between', 'space-around', 'space-evenly') | No |
left
left is the number of logical pixels to offset the left edge of this component.
It works similarly to left in CSS, but in React Native you must use points or percentages. Ems and other units are not supported.
See https://developer.mozilla.org/en-US/docs/Web/CSS/left for more details of how left affects layout.
| Type | Required |
|---|---|
| number, string | No |
margin
Setting margin has the same effect as setting each of marginTop, marginLeft, marginBottom, and marginRight. See https://developer.mozilla.org/en-US/docs/Web/CSS/margin for more details.
| Type | Required |
|---|---|
| number, string | No |
marginBottom
marginBottom works like margin-bottom in CSS. See https://developer.mozilla.org/en-US/docs/Web/CSS/margin-bottom for more details.
| Type | Required |
|---|---|
| number, string | No |
marginEnd
When direction is ltr, marginEnd is equivalent to marginRight. When direction is rtl, marginEnd is equivalent to marginLeft.
| Type | Required |
|---|---|
| number, string | No |
marginHorizontal
Setting marginHorizontal has the same effect as setting both marginLeft and marginRight.
| Type | Required |
|---|---|
| number, string | No |
marginLeft
marginLeft works like margin-left in CSS. See https://developer.mozilla.org/en-US/docs/Web/CSS/margin-left for more details.
| Type | Required |
|---|---|
| number, string | No |
marginRight
marginRight works like margin-right in CSS. See https://developer.mozilla.org/en-US/docs/Web/CSS/margin-right for more details.
| Type | Required |
|---|---|
| number, string | No |
marginStart
When direction is ltr, marginStart is equivalent to marginLeft. When direction is rtl, marginStart is equivalent to marginRight.
| Type | Required |
|---|---|
| number, string | No |
marginTop
marginTop works like margin-top in CSS. See https://developer.mozilla.org/en-US/docs/Web/CSS/margin-top for more details.
| Type | Required |
|---|---|
| number, string | No |
marginVertical
Setting marginVertical has the same effect as setting both marginTop and marginBottom.
| Type | Required |
|---|---|
| number, string | No |
maxHeight
maxHeight is the maximum height for this component, in logical pixels.
It works similarly to max-height in CSS, but in React Native you must use points or percentages. Ems and other units are not supported.
See https://developer.mozilla.org/en-US/docs/Web/CSS/max-height for more details.
| Type | Required |
|---|---|
| number, string | No |
maxWidth
maxWidth is the maximum width for this component, in logical pixels.
It works similarly to max-width in CSS, but in React Native you must use points or percentages. Ems and other units are not supported.
See https://developer.mozilla.org/en-US/docs/Web/CSS/max-width for more details.
| Type | Required |
|---|---|
| number, string | No |
minHeight
minHeight is the minimum height for this component, in logical pixels.
It works similarly to min-height in CSS, but in React Native you must use points or percentages. Ems and other units are not supported.
See https://developer.mozilla.org/en-US/docs/Web/CSS/min-height for more details.
| Type | Required |
|---|---|
| number, string | No |
minWidth
minWidth is the minimum width for this component, in logical pixels.
It works similarly to min-width in CSS, but in React Native you must use points or percentages. Ems and other units are not supported.
See https://developer.mozilla.org/en-US/docs/Web/CSS/min-width for more details.
| Type | Required |
|---|---|
| number, string | No |
overflow
overflow controls how children are measured and displayed. overflow: hidden causes views to be clipped while overflow: scroll causes views to be measured independently of their parents' main axis. It works like overflow in CSS (default: visible). See https://developer.mozilla.org/en/docs/Web/CSS/overflow for more details.
| Type | Required |
|---|---|
| enum('visible', 'hidden', 'scroll') | No |
padding
Setting padding has the same effect as setting each of paddingTop, paddingBottom, paddingLeft, and paddingRight. See https://developer.mozilla.org/en-US/docs/Web/CSS/padding for more details.
| Type | Required |
|---|---|
| number, string | No |
paddingBottom
paddingBottom works like padding-bottom in CSS. See https://developer.mozilla.org/en-US/docs/Web/CSS/padding-bottom for more details.
| Type | Required |
|---|---|
| number, string | No |
paddingEnd
When direction is ltr, paddingEnd is equivalent to paddingRight. When direction is rtl, paddingEnd is equivalent to paddingLeft.
| Type | Required |
|---|---|
| number, string | No |
paddingHorizontal
Setting paddingHorizontal is like setting both of paddingLeft and paddingRight.
| Type | Required |
|---|---|
| number, string | No |
paddingLeft
paddingLeft works like padding-left in CSS. See https://developer.mozilla.org/en-US/docs/Web/CSS/padding-left for more details.
| Type | Required |
|---|---|
| number, string | No |
paddingRight
paddingRight works like padding-right in CSS. See https://developer.mozilla.org/en-US/docs/Web/CSS/padding-right for more details.
| Type | Required |
|---|---|
| number, string | No |
paddingStart
When direction is ltr, paddingStart is equivalent to paddingLeft. When direction is rtl, paddingStart is equivalent to paddingRight.
| Type | Required |
|---|---|
| number, string | No |
paddingTop
paddingTop works like padding-top in CSS. See https://developer.mozilla.org/en-US/docs/Web/CSS/padding-top for more details.
| Type | Required |
|---|---|
| number, ,string | No |
paddingVertical
Setting paddingVertical is like setting both of paddingTop and paddingBottom.
| Type | Required |
|---|---|
| number, string | No |
position
position in React Native is similar to regular CSS, but everything is set to relative by default, so absolute positioning is always relative to the parent.
If you want to position a child using specific numbers of logical pixels relative to its parent, set the child to have absolute position.
If you want to position a child relative to something that is not its parent, don't use styles for that. Use the component tree.
See https://github.com/facebook/yoga for more details on how position differs between React Native and CSS.
| Type | Required |
|---|---|
| enum('absolute', 'relative') | No |
right
right is the number of logical pixels to offset the right edge of this component.
It works similarly to right in CSS, but in React Native you must use points or percentages. Ems and other units are not supported.
See https://developer.mozilla.org/en-US/docs/Web/CSS/right for more details of how right affects layout.
| Type | Required |
|---|---|
| number, string | No |
start
When the direction is ltr, start is equivalent to left. When the direction is rtl, start is equivalent to right.
This style takes precedence over the left, right, and end styles.
| Type | Required |
|---|---|
| number, string | No |
top
top is the number of logical pixels to offset the top edge of this component.
It works similarly to top in CSS, but in React Native you must use points or percentages. Ems and other units are not supported.
See https://developer.mozilla.org/en-US/docs/Web/CSS/top for more details of how top affects layout.
| Type | Required |
|---|---|
| number, string | No |
width
width sets the width of this component.
It works similarly to width in CSS, but in React Native you must use points or percentages. Ems and other units are not supported. See https://developer.mozilla.org/en-US/docs/Web/CSS/width for more details.
| Type | Required |
|---|---|
| number, string | No |
zIndex
zIndex controls which components display on top of others. Normally, you don't use zIndex. Components render according to their order in the document tree, so later components draw over earlier ones. zIndex may be useful if you have animations or custom modal interfaces where you don't want this behavior.
It works like the CSS z-index property - components with a larger zIndex will render on top. Think of the z-direction like it's pointing from the phone into your eyeball. See https://developer.mozilla.org/en-US/docs/Web/CSS/z-index for more details.
On iOS, zIndex may require Views to be siblings of each other for it to work as expected.
| Type | Required |
|---|---|
| number | No |