"Beginning IOS 7 Development" proficient in iOS7 development "autorotation and autosizing

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One, the relative position of rotation after the same

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Second, the relative position change after rotation

2.1 Default:

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2.2 After adjustment

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Third, summary

3.1 Which directions are supported in app level settings:

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3.2 Which orientations are supported at the Viewcontroller (Xlib) Level:

#import "JAViewController.h" @interface Javiewcontroller () @end @implementation javiewcontroller-(void) viewdidload{    [Super viewdidload];//do no additional setup after loading the view, typically from a nib.} -(void) didreceivememorywarning{    [Super didreceivememorywarning];    Dispose of any resources the can be recreated.} Override this method-(Nsuinteger) supportedinterfaceorientations{//    return (uiinterfaceorientationmaskportrait| Uiinterfaceorientationmasklandscapeleft| Uiinterfaceorientationmaskportraitupsidedown);//    return uiinterfaceorientationmaskall;    Return (uiinterfaceorientationmasklandscaperight| Uiinterfaceorientationmasklandscapeleft| Uiinterfaceorientationmaskportraitupsidedown);} @end

3.3 using constraint contstraints

3.4 When the above contraints method is not satisfied, shut it down, let the later in the VIEWCONTROLLER.M through the code implementation.

javiewcontroller.m//restructure////Created by Jason on 14-7-16.//Copyright (c) 2014 Jason. All rights reserved.//#import "JAViewController.h" @interface Javiewcontroller () @property (weak, nonatomic) Iboutlet UIButton *actionbutton1; @property (weak, nonatomic) Iboutlet UIButton *actionbutton2; @property (weak, nonatomic) Iboutlet UIButton *actionbutton3; @property (weak, nonatomic) Iboutlet UIButton *actionbutton4; @property (Weak, nonatomic) Iboutlet UIView *contentview; @end @implementation javiewcontroller-(void) viewdidload{[Super Viewdidload]    ;//start from here uiapplication *app = [UIApplication sharedapplication];    Uiinterfaceorientation currentorientation = app.statusbarorientation; [Self dolayoutfororientation:currentorientation];//jumps to actual processing place}-(void) didreceivememorywarning{[super    Didreceivememorywarning]; Dispose of any resources the can be recreated.} Start Here-(void) Willanimaterotationtointerfaceorientation: (uiinterfaceorientation) tointerfaceorientation DuratIon: (Nstimeinterval) duration {[Self dolayoutfororientation:tointerfaceorientation]; }//determines the current direction-(void) Dolayoutfororientation: (uiinterfaceorientation) orientation{if (uiinterfaceorientationisportrait (orientation))    {[Self layoutportrait];    } else {[self layoutlandscape]; }}static const CGFloat buttonheight = 40;static Const CGFloat buttonwidth = 120;static Const cgfloat spacing = 20;//vertical Processing-    (void) layoutportrait {cgrect b = self.view.bounds;    CGFloat contentwidth = cgrectgetwidth (b)-(2 * spacing);    CGFloat contentheight = cgrectgetheight (b)-(4 * spacing)-(2 * buttonheight);     Self.contentView.frame = CGRectMake (spacing, spacing, contentwidth, contentheight);    CGFloat buttonrow1y = Contentheight + (2 * spacing);    CGFloat buttonrow2y = buttonrow1y + buttonheight + spacing;    CGFloat buttoncol1x = spacing;    CGFloat buttoncol2x = cgrectgetwidth (b)-buttonwidth-spacing; Self.actionButton1.frame = CGRectMake (buttoncol1x, buttonrow1y, Buttonwidth, buttonheight); Self.actionButton2.frame = CGRectMake (buttoncol2x, buttonrow1y, Buttonwidth, Butt    Onheight); Self.actionButton3.frame = CGRectMake (buttoncol1x, buttonrow2y, Buttonwidth, Butt    Onheight); Self.actionButton4.frame = CGRectMake (buttoncol2x, buttonrow2y, Buttonwidth, Butt Onheight);}    Transverse processing-(void) Layoutlandscape {cgrect b = self.view.bounds;    CGFloat contentwidth = cgrectgetwidth (b)-Buttonwidth-(3 * spacing);    CGFloat contentheight = cgrectgetheight (b)-(2 * spacing);     Self.contentView.frame = CGRectMake (spacing, spacing, contentwidth, contentheight);    CGFloat Buttonx = cgrectgetwidth (b)-buttonwidth-spacing;    CGFloat buttonrow1y = spacing; CGFloat buttonrow4y = cgrectgetheight (b)-Buttonheight-spacing; CGFloat buttonrow2y = buttonrow1y + Floor ((buttonrow4y-buttonrow1y) * 0.333    ); CGFloat buttonrow3y = buttonrow1y + Floor ((buttonrow4y-buttonrow1y) * 0.667    ); Self.actionButton1.frame = CGRectMake (Buttonx, buttonrow1y, Buttonwidth, Buttonhe    ight); Self.actionButton2.frame = CGRectMake (Buttonx, buttonrow2y, Buttonwidth, Buttonhe    ight); Self.actionButton3.frame = CGRectMake (Buttonx, buttonrow3y, Buttonwidth, Buttonhe    ight); Self.actionButton4.frame = CGRectMake (Buttonx, buttonrow4y, Buttonwidth, Buttonhe ight);} @end

"Beginning IOS 7 Development" proficient in iOS7 development "autorotation and autosizing