Android - AttributeSet -

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i have code this: 

public class cannonview extends surfaceviewimplements surfaceholder.callback{ activity activity;

and constructor:

public cannonview(context context, attributeset attrs){ super(context,attrs) activity = (activity) context;

but apparently attributeset doing nothing, dont know why there, questions are: 1.-what attributeset? 2.-why need provide attributeset attrs second argument? way rest of code painting using canvas. thanks.

http://developer.android.com/training/custom-views/create-view.html - explanation.

shortly, attributeset needed gui editor.
attributeset set of parameters layout_width, layour_height , on. need new custom attributes, need extend expand attributset class


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