Question

Say I have a method that I wish to call which has an argument of a string

To call, I would do something like this..
myFunction(stringValue);

NOW, how would i make that same call, but dynamically if I had a string with the value of ‘myFunction’..

something like

method = [convert "myFunction" string to method];
method.invoke(stringValue);

---

I am currently trying something like

java.lang.reflect.Method method;

method = Class.forName("com.blah.MyActivity").getMethod('myFunction',String.class);
method.invoke (stringValue);

but getting the error
IllegalArgumentException
Message expected receiver of type com.blah.MyActivity, but got java.lang.String

Answer 1

The instruction:

method.invoke (stringValue);

needs the object in which the method will be invoked.

So, if you try something like:

method = Class.forName("com.blah.MyActivity").getMethod('myFunction',String.class);
method.invoke(someInstanceOfMyActivity, stringValue);

it will work.

Documentation:
http://docs.oracle.com/javase/6/docs/api/java/lang/reflect/Method.html