ios - CFRelease causing crash in iPad application -

i trying merge 4 images make 1 uiimage. when going cfrelease, crashing. if don't this, giving memory leak , crashing. how resolved?

see below code.

    referenceview.frame = cgrectmake(0, 0, 1024, 768);     referenceview.hidden = no;      [self.view insertsubview:referenceview belowsubview:selfview];      imgview1.image = delegate.imagecroped;     imgview2.image = [uiimage imagenamed:@"videobg.png"];     imgview3.image = [uiimage imagenamed:@"videochar.png"];;     imgview4.image = smileview.image;      imgview1.frame = cgrectmake(456, 311, delegate.imagecroped.size.width-30.8, delegate.imagecroped.size.height-40);     imgview2.frame = cgrectmake(0, 0, 1024, 768);     imgview3.frame = cgrectmake(392, 187, imgview3.image.size.width, imgview3.image.size.height);     imgview4.frame = cgrectmake((smileview.frame.origin.x-((smileview.frame.origin.x > 530) ?    30  : 15)), (smileview.frame.origin.y+((smileview.frame.origin.y <= 307) ?    95  : 50)), smileview.frame.size.width, smileview.frame.size.height);      [referenceview addsubview:imgview1];     [referenceview addsubview:imgview2];     [referenceview addsubview:imgview3];     [referenceview addsubview:imgview4];      uigraphicsbeginimagecontext(referenceview.bounds.size);     [referenceview.layer renderincontext:uigraphicsgetcurrentcontext()];     cgimageref finalimage = ( cgimageref)(uigraphicsgetimagefromcurrentimagecontext());     uigraphicsendimagecontext();      [referenceview removefromsuperview];     [imgview1 removefromsuperview];     [imgview2 removefromsuperview];     [imgview3 removefromsuperview];     [imgview4 removefromsuperview];      uiimage *resizedimage = [uiimage imagewithcgimage:finalimage];      cfrelease(finalimage);      return resizedimage;  } @catch (nsexception *exception) {  } 

and getting below error. how can fix problem? project in arc.

* -[uiimage _cftypeid]: message sent deallocated instance 0x1e88dce0

uigraphicsgetimagefromcurrentimagecontext() returns uiimage *, not cgimageref. , don't own resulting uiimage, don't want release (or cfrelease() it).

try:

uiimage *finalimage = uigraphicsgetimagefromcurrentimagecontext(); 

instead.