iOS image capture function image stitching function

Capture the entire view:

-(uiimage*) Captureview: (UIView *) theview{    = theview.frame;     if class ]]) {        = ((Uiscrollview *) theview). contentsize;    }    Uigraphicsbeginimagecontext (rect.size);     = Uigraphicsgetcurrentcontext ();    [Theview.layer Renderincontext:context];     *img = uigraphicsgetimagefromcurrentimagecontext ();    Uigraphicsendimagecontext ();     return img;}

To intercept a part of a view:

-(UIImage *) Cropimage: (UIImage *=*img = [UIImage imagewithcgimage:imageref];   return img;}

Intercept Scrollerview:

-(UIImage *) Capturescrollview: (Uiscrollview *) scrollview{UIImage* Image =Nil;    Uigraphicsbeginimagecontext (scrollview.contentsize); {Cgpoint Savedcontentoffset=Scrollview.contentoffset; CGRect Savedframe=Scrollview.frame; Scrollview.contentoffset=Cgpointzero; Scrollview.frame= CGRectMake (0,0, ScrollView.contentSize.width, scrollView.contentSize.height);        [Scrollview.layer Renderincontext:uigraphicsgetcurrentcontext ()]; Image=Uigraphicsgetimagefromcurrentimagecontext (); Scrollview.contentoffset=Savedcontentoffset; Scrollview.frame=Savedframe;    } uigraphicsendimagecontext (); if(Image! =Nil) {        returnimage; }    returnNil;}

Stitching of multiple images:

-(UIImage *) Composewithheader: (UIImage *) header content: (UIImage *) content footer: (UIImage *) footer{cgsize size= Cgsizemake (Content.size.width, header.size.height +content.size.height +footer.size.height);    Uigraphicsbeginimagecontext (size); [Header Drawinrect:cgrectmake (0,                                  0, Header.size.width, Header.size.height)]; [Content Drawinrect:cgrectmake (0, Header.size.height, Content.size.width,    Content.size.height)]; [Footer Drawinrect:cgrectmake (0, Header.size.height+content.size.height, Footer.size.width, Footer.size.    Height)]; UIImage*image =Uigraphicsgetimagefromcurrentimagecontext ();    Uigraphicsendimagecontext (); returnimage;}

iOS image capture function image stitching function