Collect iOS device screen rotation Techniques

Uiinterfaceorientation direction enumeration:

Uiinterfaceorientationportrait // The home is alive.
Uiinterfaceorientationportraitupsidedown // The home is alive.
Uiinterfaceorientationlandscapeleft // The home is left
Uiinterfaceorientationlandscaperight // The home is located on the right

 

 Functions triggered when the screen is rotated:  //  When the rotation direction changes -( Void  ) Willanimaterotationtointerfaceorientation :( uiinterfaceorientation) tointerfaceorientation duration :( nstimeinterval) Duration {}  //  Automatically called before the first half of a view rotation animation occurs -( Void ) Willanimatefirsthalfofrotationtointerfaceorientation :( uiinterfaceorientation) tointerfaceorientation duration :( nstimeinterval) Duration {}  //  Automatically called before the last half of a view rotation animation occurs -( Void  ) Willanimatesecondhalfofrotationfrominterfaceorientation :( uiinterfaceorientation) frominterfaceorientation duration :( nstimeinterval) Duration {}  //  Automatically called before view Rotation -( Void  ) Willrotatetointerfaceorientation :( uiinterfaceorientation) tointerfaceorientation duration :( nstimeinterval) Duration {}  // Automatically called after view Rotation -( Void  ) Didrotatefrominterfaceorientation :( uiinterfaceorientation) frominterfaceorientation {}  //  Automatically called when the first half of a view rotation animation occurs -( Void  ) Didanimatefirsthalfofrotationtointerfaceorientation :( uiinterfaceorientation) tointerfaceorientation {}