Need to handle click from NON-Activity( .java ) class

Question

i have one main Activity class which contains huge amount of code/data. So i want to make it short and readable so i want to create one .java file which handle the some func

Answer 1

You can just implement your onclick listener in your main class BUT use an interface to externalise the content of the listener in an other Class.

Exemple :

Create a class ManageClick.java that contain constructor, several methods and objects.

An attribute

public OnClickListenerCustom _onClickListenerCustom;

And an interface

Interface OnClickListenerCustom{
    public void onclick();
    public void onItemClick();
}

and another method like setOnClickListenerCustom :

public void setOnClickListenerCustom(OnClickListenerCustom listener){
    this._onClickListenerCustom = listener;
}

In your main Class MainActivity.java you implement the onclick() method, in the oncreate you set the listener :

public ManageClick _clickManager;

_clickManager = new ManageClick();
_clickManager.setOnClickListener((OnClickListenerCustom) this.MainActivity);

To finish in the onclick method you only need to call

_clickManager.onClick() or _clickManager.onItemClick()