Screen
Screen
components are used to configure various aspects of screens inside a navigator.
A Screen
is returned from a createXNavigator
function:
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After creating the navigator, it can be used as children of the Navigator
component:
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You need to provide at least a name and a component to render for each screen.
Props¶
name
¶
The name to use for the screen. It accepts a string:
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This name is used to navigate to the screen:
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It is also used for the name
property in the route
.
While it is supported, we recommend to avoid spaces or special characters in screen names and keep them simple.
options
¶
Options to configure how the screen gets presented in the navigator. It accepts either an object or a function returning an object:
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When you pass a function, it'll receive the route
and navigation
:
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See Options for screens for more details and examples.
initialParams
¶
Initial params to use for the screen. If a screen is used as initialRouteName
, it'll contain the params from initialParams
. If you navigate to a new screen, the params passed are shallow merged with the initial params.
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getId
¶
Callback to return an unique ID to use for the screen. It receives an object with the route params:
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By default, navigate('ScreenName', params)
identifies the screen by its name. So if you're on ScreenName
and navigate to ScreenName
again, it won't add a new screen even if the params are different - it'll update the current screen with the new params instead:
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If you specify getId
and it doesn't return undefined
, the screen is identified by both the screen name and the returned ID. Which means that if you're on ScreenName
and navigate to ScreenName
again with different params - and return a different ID from the getId
callback, it'll add a new screen to the stack:
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The getId
callback can also be used to ensure that the screen with the same ID doesn't appear multiple times in the stack:
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In the above examples, params.userId
is used as an ID, subsequent navigation to the screen with the same userId
will navigate to the existing screen instead of adding a new one to the stack. If the navigation was with a different userId
, then it'll add a new screen.
If getId
is specified in a tab or drawer navigator, the screen will remount if the ID changes.
component
¶
The React Component to render for the screen:
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getComponent
¶
Callback to return the React Component to render for the screen:
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You can use this approach instead of the component
prop if you want the ProfileScreen
module to be lazily evaluated when needed. This is especially useful when using ram bundles to improve initial load.
children
¶
Render callback to return React Element to use for the screen:
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You can use this approach instead of the component
prop if you need to pass additional props. Though we recommend using React context for passing data instead.
Note: By default, React Navigation applies optimizations to screen components to prevent unnecessary renders. Using a render callback removes those optimizations. So if you use a render callback, you'll need to ensure that you use
React.memo
orReact.PureComponent
for your screen components to avoid performance issues.
navigationKey
¶
Optional key for this screen. This doesn't need to be unique. If the key changes, existing screens with this name will be removed (if used in a stack navigator) or reset (if used in a tab or drawer navigator).
This can be useful when we have some screens which we want to be removed or reset when the condition changes:
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listeners
¶
Event listeners to subscribe to. See listeners
prop on Screen
for more details.