ios - How to rotate the device but change nothing in the view -

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i want user rotate device change nothing in view (do not rotate view 180 degrees). want println sentence.

here code yet - (it println sentence rotate device's view. in example left does't matter side):

override func shouldautorotate() -> bool {     if (uidevice.currentdevice().orientation == uideviceorientation.landscapeleft) {         println("device has been rotated.")     }     return true }

change

return true

to 

return false

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