Global class that keeps an object in memory. Can be used to pass objects to a new Activity instead of using Intent. Will not work if Intent is in a different process. Overall this is a very fragile system and will fail at any given chance.

Global.java

import android.support.annotation.Nullable;

@SuppressWarnings("unchecked")
final public class Global {
	private static final Global shared = new Global();
	private Global() {}
	private Object object;

	// returns the object, if expected class matches
	@Nullable static public <T> T get(Class<T> kind) {
		T output = null;
		if (shared.object.getClass().equals(kind)) {
			output = (T)shared.object;
		}
		return output;
	}

	static void remove() { shared.object = null; }
	static void put(Object obj) { shared.object = obj; }
}