How to achieve auto-scaling of IOS screens) How to achieve auto-scaling of IOS screens

How to achieve auto-adaptation of IOS screens first in -(Bool) shouldautorotatetointerfaceorientation :( uiinterfaceorientation) Interfaceorientation Method. -(Void) willrotatetointerfaceorientation (uiinterfaceorientation) Tointerfaceorientation  Duration :( nstimeinterval) Duration Or -(Void) willanimaterotationtointerfaceorientation (uiinterfaceorientation) Interfaceorientation Duration :( nstimeinterval) Duration Reset the frame of all sub-views. When uiview is set to automatically adapt to the screen (that is, myview. autoresizessubviews = yes). When we reset the frame of myview (We will reset the frame of view when the screen is rotated), The layoutsubviers method is automatically called, in this method, we can determine the screen direction and adjust the frame of each sub-view. If there is a superviewcontroller in the work layer and the view of another subviewcontroller is added to the Controller's attempt, the above three methods of subviewcontroller will not be called in any case. At this time, you can -(Void) willrotatetointerfaceorientation (uiinterfaceorientation) Tointerfaceorientation  Duration :( nstimeinterval) Duration Or -(Void) willanimaterotationtointerfaceorientation (uiinterfaceorientation) Interfaceorientation Duration :( nstimeinterval) Duration Method to reconfigure the view of subviewcontroller. First -(Bool) shouldautorotatetointerfaceorientation :( uiinterfaceorientation) Interfaceorientation Method. -(Void) willrotatetointerfaceorientation (uiinterfaceorientation) Tointerfaceorientation  Duration :( nstimeinterval) Duration Or -(Void) willanimaterotationtointerfaceorientation (uiinterfaceorientation) Interfaceorientation Duration :( nstimeinterval) Duration Reset the frame of all sub-views. When uiview is set to automatically adapt to the screen (that is, myview. autoresizessubviews = yes). When we reset the frame of myview (We will reset the frame of view when the screen is rotated), The layoutsubviers method is automatically called, in this method, we can determine the screen direction and adjust the frame of each sub-view. If there is a superviewcontroller in the work layer and the view of another subviewcontroller is added to the Controller's attempt, the above three methods of subviewcontroller will not be called in any case. At this time, you can -(Void) willrotatetointerfaceorientation (uiinterfaceorientation) Tointerfaceorientation  Duration :( nstimeinterval) Duration Or -(Void) willanimaterotationtointerfaceorientation (uiinterfaceorientation) Interfaceorientation Duration :( nstimeinterval) Duration Method to reconfigure the view of subviewcontroller.