ios - CGContextDrawPDFPage memory leak -

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hello here code drawing pdf in catiledlayer

- (void)drawlayer:(calayer *)layer incontext:(cgcontextref)ctx {           cgcontextsetrgbfillcolor(ctx, 1.0, 1.0, 1.0, 1.0);          cgcontextfillrect(ctx, cgcontextgetclipboundingbox(ctx));          cgcontexttranslatectm(ctx, 0.0, layer.bounds.size.height);          cgcontextscalectm(ctx, 1.0, -1.0);          cgcontextconcatctm(ctx, cgpdfpagegetdrawingtransform(mypageref, kcgpdfcropbox, layer.bounds, 0, true));          cgcontextdrawpdfpage(ctx, mypageref);  }

all got memory leak warning in following line

     cgcontextdrawpdfpage(ctx, mypageref);

here mypageref cgpdfpageref

i had download code github , make r&d , found that,

i forgot release cgpdfpagerelease(mypageref) in dealloc method of tiledview..

and after writing code memory leak solved....

 // clean up.   - (void)dealloc {      cgpdfpagerelease(mypageref);         [super dealloc];  }

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