uifont-Dynamic Download System-supplied fonts-Official code

One, engineering catalogue

Two, APPDELEGATE.M

-(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (Nsdictionary *) launchOptions {    Override point for customization after application launch.            Viewcontroller *view=[[viewcontroller Alloc]init];    Uinavigationcontroller *nav=[[uinavigationcontroller Alloc]initwithrootviewcontroller:view];    Self.window.backgroundcolor=[uicolor Whitecolor];    Self.window.rootviewcontroller=nav;                return YES;}

Three, ViewController.h

#import <UIKit/UIKit.h> @interface Viewcontroller:uiviewcontroller<uitableviewdelegate, uitableviewdatasource>{    UITableView *mytableview;    Nsarray *fontnames;    Nsarray *fontsamples;} @end

Four, VIEWCONTROLLER.M

#import "ViewController.h" #import <CoreText/CoreText.h> @interface Viewcontroller () @end @implementation    viewcontroller-(void) viewdidload {[Super viewdidload];        Additional setup after loading the view, typically from a nib.    Initialize data [self addData];    Initialize interface [self addview]; } #pragma-mark-functions//initialization interface-(void) addview{Mytableview=[[uitableview alloc]initwithframe:cgrectmake (0, 100, 320    , 200)];    mytableview.delegate=self;    mytableview.datasource=self; [Self.view Addsubview:mytableview];}                 Initialize data-(void) adddata{fontnames = [[Nsarray alloc] initwithobjects: @ "Stxingkai-sc-light", @ "Dfwawasc-w5", @ "fzltxhk--gbk1-0", @ "Stlibian-sc-regular", @ "LIHEIPR    O ", @" HIRAGINOSANSGB-W3 ", nil];                   Fontsamples = [[Nsarray alloc] initwithobjects: @ "Chinese writing information Technology standard phase", @ "File download user interface is simple", @ "Support Service upgrade information professional system"@ "Fast wireless internet for creative space" @ "兙 兛 兞 兝 兡 兣 嗧 kw 糎", @ "㈠㈡㈢㈣㈤㈥㈦㈧㈨㈩", nil ];} #pragma-mark-uitableviewdelegate-(Nsinteger) TableView: (UITableView *) TableView numberofrowsinsection: (Nsinteger) section{return [FontNames count];} -(UITableViewCell *) TableView: (UITableView *) TableView Cellforrowatindexpath: (Nsindexpath *) indexpath{static        NSString *myidentifier = @ "Myidentifier";    UITableViewCell *cell = [TableView dequeuereusablecellwithidentifier:myidentifier]; if (cell = = nil) {cell = [[UITableViewCell alloc] Initwithstyle:uitableviewcellstyledefault Reuseidentifier:myiden    Tifier];        } Cell.textLabel.text = Fontnames[indexpath.row]; return cell;} -(void) TableView: (UITableView *) TableView Didselectrowatindexpath: (Nsindexpath *) indexpath{[self Asynchronouslysetfontname:fontnames[indexpath.row]];} #pragma-mark-functions//font starts to download-(void) Asynchronouslysetfontname: (NSString *) fontname{uifont* Afont = [Uifont fontwithname:fontname Size:12.]; Determine if the font has been downloaded if (Afont && ([afont.fontname compare:fontname] = = Nsorderedsame | |        [Afont.familyname compare:fontname] = = nsorderedsame) {NSLog (@ "Font has been downloaded");    Return }//Create a dictionary nsmutabledictionary *attrs with the PostScript name of the font = [Nsmutabledictionary dictionarywithobjectsandkey        S:fontname, Kctfontnameattribute, nil]; Create a font description object Ctfontdescriptorref ctfontdescriptorref desc = ctfontdescriptorcreatewithattributes ((__bridge        CFDICTIONARYREF) attrs);    Place the font description object in a nsmutablearray nsmutablearray *descs = [Nsmutablearray arraywithcapacity:0];    [Descs AddObject: (__bridge ID) desc];        Cfrelease (DESC);        __block BOOL errorduringdownload = NO; Start downloading Fonts Ctfontdescriptormatchfontdescriptorswithprogresshandler ((__bridge cfarrayref) Descs, NULL, ^ ( Ctfontdescriptormatchingstate state, Cfdictionaryref progressparameter) {NSLog (@ ' state%d-%@ ', state, p RogressparameteR); Double Progressvalue = [[(__bridge nsdictionary *) Progressparameter Objectforkey: (ID)                        Kctfontdescriptormatchingpercentage] Doublevalue];                if (state = = Kctfontdescriptormatchingdidbegin) {Dispatch_async (Dispatch_get_main_queue (), ^ {                NSLog (@ "Font has been matched");        });                } else if (state = = Kctfontdescriptormatchingdidfinish) {Dispatch_async (Dispatch_get_main_queue (), ^ {                      NSLog (@ "Font Download complete");  Log the font URL in the console ctfontref fontref = Ctfontcreatewithname ((__bridge cfstringref) FontName,                0., NULL);                Cfstringref Fonturl = Ctfontcopyattribute (Fontref, Kctfonturlattribute);                Cfrelease (Fonturl);                                Cfrelease (FONTREF);                if (!errorduringdownload) {NSLog (@ "%@ downloaded", fontname);        }            }); } else if (state = = KCTFONTDESCRIPTORMATChingwillbegindownloading) {Dispatch_async (Dispatch_get_main_queue (), ^ {NSLog (@ "font start download");        });  } else if (state = = kctfontdescriptormatchingdidfinishdownloading) {Dispatch_async (Dispatch_get_main_queue (),                ^ {NSLog (@ "Font Download complete");        });                } else if (state = = kctfontdescriptormatchingdownloading) {Dispatch_async (Dispatch_get_main_queue (), ^ {            NSLog (@ "Download progress");        });                        } else if (state = = Kctfontdescriptormatchingdidfailwitherror) {NSLog (@ "Download Failed");            Nserror *error = [(__bridge nsdictionary *) Progressparameter Objectforkey: (ID) kctfontdescriptormatchingerror];            if (Error! = nil) {NSLog (@ "errormessage--%@-", [error description]);            } else {NSLog (@ "error message is not available");            } errorduringdownload = YES; Dispatch_async (Dispatch_get_main_queue (), ^ {NSLog (@ "Download error:%@", [error description]);        });    } return (bool) YES;    });    }-(void) didreceivememorywarning {[Super didreceivememorywarning]; Dispose of any resources the can be recreated.} @end

Reference: iOS Development advanced-Tang Qi

  

uifont-Dynamic Download System-supplied fonts-Official code