Conversion between (IOS) uiimage, cgimage and cgimageref

Cgimage and cgimageref should be two classes used to redraw images. They are used to draw images based on the pixel matrix of the images, which can be used to process bitmap.

Mutual conversion between cgimageref and uiimage

 

Cgimageref to uiimage cgimageref

Ioffscreen = cgbitmapcontextcreateimage (context );

Uiimage * image = [uiimage imagewithcgimage: ioffscreen];

 

Convert uiimage to cgimageref

Uiimage * LoadImage = [uiimage imagenamed: @ "comicsplash.png"];

Cgimageref cgimage = LoadImage. cgimage;