I followed the tutorial on this site: https://facebook.github.io/react-native/docs/embedded-app-android.html
Now I want to have a function in my javascript code like this:
greetingFunction(){
return "HELLO, WORLD";
}
I want to pass the string "HELLO, WORLD" to my java android code and set the screen to display that string.
How can I do this?
You should create a custom module to call custom native methods in Java where you can pass the data you need.
For instance if your custom native module implements the following method:
@ReactMethod
public void myMethod(String message) {
// Here we show a toast message
Toast.makeText(getReactApplicationContext(), message, Toast.LENGTH_SHORT).show();
}
Then you can call that method from JavaScript:
NativeModules.MyCustomModule.myMethod("HELLO WORLD");
Be sure to properly follow all steps described in the doc above to properly register your custom module.
