Ios_ screenshot and Crop

Usage scenarios:

Code generation snippet in IOS 7

Using context and clipping with the specified area, template code-(void) screenshot{    //Will be view, that is, view of the form's root controller (must not contain status bar, default iOS7 controller is included in the status bar)    Beyondviewcontroller *BEYONDVC = Self.view.window.rootViewController;    The total size of the background picture is    cgsize size = beyondVC.view.frame.size;    Open context, after using the parameters, the original image (yes  0.0 high quality)    uigraphicsbeginimagecontextwithoptions (size, yes, 0.0) is truncated;    The clipping of the key code, the rectangular range to be clipped    cgrect rect = CGRectMake (0, -20, size.width, Size.Height +);    Note: IOS7 after Renderincontext: by drawviewhierarchyinrect:afterscreenupdates: substitution    [Beyondvc.view Drawviewhierarchyinrect:rect  Afterscreenupdates:no];    From the context, remove UIImage    UIImage *snapshot = Uigraphicsgetimagefromcurrentimagecontext ();    Add the captured image to the image array    [_cutimages addobject:snapshot];        Remember, end context (remove stack top)    uigraphicsendimagecontext ();    }

Code Snippets in IOS 6

Using context, template code-(void) screenshot3{    //Will be view, form's root controller view (IOS6, default controller does not contain status bar)    Beyondviewcontroller *BEYONDVC = Self.view.window.rootViewController;    UIView *cutview = Beyondvc.view;    Open context, after using the number of references, the original (yes  0.0 high quality)    uigraphicsbeginimagecontextwithoptions (cutView.frame.size, yes, 0.0);    Render the Cutview layer into context    [Cutview.layer renderincontext:uigraphicsgetcurrentcontext ()];    Remove UIImage    UIImage *image = Uigraphicsgetimagefromcurrentimagecontext ();    Add the captured image to the image array    [_cutimages addobject:image];    Remember, end context    uigraphicsendimagecontext ();}

Ios_ screenshot and Crop