Text and pictures redraw to a picture/picture and picture redraw to a photo

Text and pictures

UIImage *image = self.showedImageView.image; Get a picture

Uigraphicsbeginimagecontext (image.size); Open context

[Image drawinrect:cgrectmake (0, 0, W, h)]; Picture painting

Nsdictionary *attr = @{nsfontattributename:[uifont monospaceddigitsystemfontofsize:268 weight:10], Nsforegroundcolorattributename:[uicolor Redcolor],nsstrokecolorattributename:[uicolor LightGrayColor]};

[Mark Drawinrect:cgrectmake (+, W, h) withattributes:attr];//text rendering

UIImage *newimage = Uigraphicsgetimagefromcurrentimagecontext ();//Get to the newly drawn picture

Uigraphicsendimagecontext (); Close context

Pictures and pictures

uigraphicsbeginimagecontextwithoptions (useimage.size, NO, 0.0);

[Useimage drawinrect:cgrectmake (0, 0, UseImage.size.width, useImage.size.height)]; Background image

[Maskimage drawinrect:cgrectmake (0, 0, USEIMAGE.SIZE.WIDTH/2, USEIMAGE.SIZE.HEIGHT/2)];

UIImage *resultimage = Uigraphicsgetimagefromcurrentimagecontext ();

Uigraphicsendimagecontext ();

Text and pictures redraw to a picture/picture and picture redraw to a photo