objective c - NSCFType keeps occurring, something is not being released? -

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i'm attempting delete files documents directory using tableview/array combination. reason, nsstring pointing documents directory path being converted nscftype (which after research, understand happening because variable not being released). because of this, application crashes @ line 

nsstring *lastpath = [documentsdirectory stringbyappendingpathcomponent:temp];

claiming nscftype cannot recognize method stringbyappendingpathcomponent.

i appreciate if me out (i hope have explained enough). 

- (void) tableview: (uitableview *) tableview commiteditingstyle: (uitableviewcelleditingstyle) editingstyle  forrowatindexpath: (nsindexpath *) indexpath {     if (editingstyle == uitableviewcelleditingstyledelete) {          nsstring *temp = [directorycontent objectatindex:indexpath.row];          nslog(temp);          nsstring *lastpath = [documentsdirectory stringbyappendingpathcomponent:temp];           [[nsfilemanager defaultmanager] removeitematpath:lastpath error:nil]; 
- (uitableviewcell *)tableview:(uitableview *)tableview          cellforrowatindexpath:(nsindexpath *)indexpath     {         paths = nssearchpathfordirectoriesindomains(nsdocumentdirectory, nsuserdomainmask, yes);         documentsdirectory = [paths objectatindex:0];        directorycontent = [[[nsfilemanager defaultmanager] contentsofdirectoryatpath:documentsdirectory error:nil] retain];  //tableview handling below   }

it seems documentsdirectory being set autoreleased object fix that,

you either retain it

documentsdirectory = [[paths objectatindex:0] retain];

or initialize before using each time this

nsarray *paths = nssearchpathfordirectoriesindomains(nsdocumentdirectory, nsuserdomainmask, yes);        documentsdirectory = [paths objectatindex:0]; nsstring *lastpath = [documentsdirectory stringbyappendingpathcomponent:temp]; [[nsfilemanager defaultmanager] removeitematpath:lastpath error:nil];

my advice, dont add these variable instance variable, dont need to, better creating them whenever need them


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