iphone - how to check if backgroundimage of UIbutton is added or not -

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i want check how check if backgroundimage of uibutton present or not

i have code,

[button setbackgroundimage:[uiimage imagenamed:@"default_module.png"] forstate:uicontrolstatenormal];

i want check if there image named "default_module.png" present , included in project folder or not.

thanks

just this:

if(![uiimage imagenamed:@"default_module"]){      //the image not present. act accordingly. }else{     //continue normal }

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