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Update NativeComponentsAndroid.md

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Krzysztof Magiera 2015-10-28 20:16:48 +00:00
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@ -15,7 +15,7 @@ Like the native module guide, this too is a more advanced guide that assumes you
For this example we are going to walk through the implementation requirements to allow the use of ImageViews in JavaScript.
Native views are created and manipulated by extending `ViewManager` or more commonly `SimpleViewManager` . A `SimpleViewManager` is convenient in this case because it applies common properties such as background color, opacity, and Flexbox layout. An example of when you would use `ViewManager` instead is when wrapping a component with FrameLayout, such as ProgressBar.
Native views are created and manipulated by extending `ViewManager` or more commonly `SimpleViewManager` . A `SimpleViewManager` is convenient in this case because it applies common properties such as background color, opacity, and Flexbox layout.
These subclasses are essentially singletons - only one instance of each is created by the bridge. They vend native views to the `NativeViewHierarchyManager`, which delegates back to them to set and update the properties of the views as necessary. The `ViewManagers` are also typically the delegates for the views, sending events back to JavaScript via the bridge.