NativeModule

```
public interface NativeModule

                    
```
A native module whose API can be provided to JS catalyst instances. NativeModules whose implementation is written in Java should extend BaseJavaModule or . NativeModules whose implementation is written in C++ must not provide any Java code (so they can be reused on other platforms), and instead should register themselves using CxxModuleWrapper.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`public interface`	`NativeModule.NativeMethod`

Method Summary

Modifier and Type	Method	Description
`abstract String`	`getName()`
`abstract void`	`initialize()`	This is called at the end of createCatalystInstance afterthe CatalystInstance has been created, in order to initialize NativeModules that require theCatalystInstance or JS modules.
`abstract boolean`	`canOverrideExistingModule()`	Return true if you intend to override some other native module that was registered e.g.
`abstract void`	`onCatalystInstanceDestroy()`	Allow NativeModule to clean up.
`abstract void`	`invalidate()`	Allow NativeModule to clean up.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - getName
```
@NonNull() abstract String getName()
```
  - initialize
```
 abstract void initialize()
```
    This is called at the end of createCatalystInstance afterthe CatalystInstance has been created, in order to initialize NativeModules that require theCatalystInstance or JS modules.
  - canOverrideExistingModule
```
 abstract boolean canOverrideExistingModule()
```
    Return true if you intend to override some other native module that was registered e.g. as partof a different package (such as the core one). Trying to override without returning true fromthis method is considered an error and will throw an exception during initialization. Bydefault all modules return false.
  - onCatalystInstanceDestroy
```
 abstract void onCatalystInstanceDestroy()
```
    Allow NativeModule to clean up. Called before {CatalystInstance#onHostDestroy}
  - invalidate
```
 abstract void invalidate()
```
    Allow NativeModule to clean up. Called before {CatalystInstance#onHostDestroy}