ios - NSString wordwrapping like UILabel NSLineBreakByWordWrapping -

i want wordwrapping string wanted dynamic height calculations purpose, because in uilabel nslinebreakbywordwrapping, counting string height dynamic purpose easy adjust uilabel height please can buddy let me know wordwrapping in string ?

cgsize size = cgsizezero; nsstring *carnamestring = cars.name; carnamestring = [carnamestring stringbyreplacingoccurrencesofstring:@"\n" withstring:@"\n\n"];  cgrect f1 = [carnamestring boundingrectwithsize:cgsizemake([[uiscreen mainscreen]bounds].size.width, cgfloat_max) options:nsstringdrawinguseslinefragmentorigin attributes:@{ nsfontattributename:[uifont fontwithname:@"copperplate" size:20] } context:nil]; size = cgsizemake(f1.size.width, f1.size.height + 1); 

note: using ios version 6.3

edit: here uilabel code:

    [carlabel setbackgroundcolor:[uicolor clearcolor]];     [carlabel settext:carnamestring];     [carlabel setadjustsfontsizetofitwidth:yes];     [carlabel setlinebreakmode:nslinebreakbywordwrapping];     [carlabel setnumberoflines:0];     [carlabel settextcolor:[uicolor whitecolor]]; 

you don't seem use size calculated bounding rectangle.
also, i'd advise use same font label used calculate bounding rectangle instead of:

[label setadjustsfontsizetofitwidth:yes]; 

code should work:

uilabel *label = [[uilabel alloc] initwithframe:cgrectmake(0, 0, size.width, size.height)]; label.numberoflines = 0; label.font = [uifont fontwithname:@"copperplate" size:20]; label.text = carnamestring; 

however, code doesn't provide initialization of uilabel , don't let know how set frame of label.

if wish use auto layout, have set translatesautoresizingmaskintoconstraints no , use size calculated bounding rect set size of container view.

here's sample based on code describing it:

uiview *containerview = [[uiview alloc] initwithframe:cgrectmake(0, 0, size.width, size.height)]; [self.view addsubview:containerview];  uilabel *label = [uilabel new]; label.translatesautoresizingmaskintoconstraints = no;  [containerview addsubview:label];  [containerview addconstraints:[nslayoutconstraint constraintswithvisualformat:@"h:|[label]|"                                                                       options:0                                                                       metrics:nil                                                                         views:nsdictionaryofvariablebindings(label)]]; [containerview addconstraints:[nslayoutconstraint constraintswithvisualformat:@"v:|[label]|"                                                                       options:0                                                                       metrics:nil                                                                         views:nsdictionaryofvariablebindings(label)]]; label.numberoflines = 0; label.font = [uifont fontwithname:@"copperplate" size:20]; label.text = carnamestring;