ios - UIImagePicker Controller swift -

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snapshotting view has not been rendered results in empty snapshot. ensure view has been rendered @ least once before snapshotting or snapshot after screen updates

i'm getting warning when used uiimagepickercontroller take photo camera.and couldn't set image image view

please follow code , apply in project according relevant place

func opencamera() {     if(uiimagepickercontroller .issourcetypeavailable(uiimagepickercontrollersourcetype.camera))     {         picker!.sourcetype = uiimagepickercontrollersourcetype.camera         self .presentviewcontroller(picker!, animated: true, completion: nil)     }     else     {         let alertwarning = uialertview(title:"warning", message: "you don't have camera", delegate:nil, cancelbuttontitle:"ok", otherbuttontitles:"")         alertwarning.show()     } } func opengallary() {     picker!.sourcetype = uiimagepickercontrollersourcetype.photolibrary     self.presentviewcontroller(picker!, animated: true, completion: nil) }  //pickerview delegate methods func imagepickercontroller(picker: uiimagepickercontroller, didfinishpickingmediawithinfo info: [nsobject : anyobject]) {     picker .dismissviewcontrolleranimated(true, completion: nil)     imageview.image=info[uiimagepickercontrolleroriginalimage] as? uiimage } func imagepickercontrollerdidcancel(picker: uiimagepickercontroller) {     println("picker cancel.") }

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