iOS中如何使用iconfont圖標(biāo)實(shí)例詳解

更新時(shí)間：2018年07月29日 14:12:39 作者：JackerooChu

iconfont大家在開(kāi)發(fā)中應(yīng)該會(huì)經(jīng)常用到，下面這篇文章主要給大家介紹了在iOS中如何使用iconfont圖標(biāo)實(shí)例的相關(guān)資料，文中通過(guò)示例代碼介紹的非常詳細(xì)，需要的朋友可以參考借鑒，下面隨著小編來(lái)一起學(xué)習(xí)學(xué)習(xí)吧

1.什么是iconfont

iconFont拆開(kāi)來(lái)看，就是 Icon + Font，這樣估計(jì)大家應(yīng)該都能理解是什么，那兩者結(jié)合是什么呢？沒(méi)錯(cuò)！就是 IconFont ！讓開(kāi)發(fā)者像使用字體一樣使用圖標(biāo)。如果自己不會(huì)做的話(huà)，可以直接去阿里的iconfont圖標(biāo)庫(kù)下載自己需要的圖標(biāo)。

2.為什么要使用iconfont

在開(kāi)發(fā)項(xiàng)目時(shí)，不可避免的會(huì)用到各種圖標(biāo)，為了適配不同的設(shè)備，通常需要@2x和@3x兩套圖，例如說(shuō)我們tabBar上使用的圖標(biāo)。有些app有換膚的需要，還需要多套不同的圖來(lái)進(jìn)行匹配不同的主題。如果使用切圖，這對(duì)于設(shè)計(jì)和開(kāi)發(fā)來(lái)說(shuō)無(wú)疑是增加了工作量，而且ipa的體積也會(huì)增大。

使用iconfont的好處:

1. 減小ipa包的大小

2. 圖標(biāo)保真縮放，多設(shè)備適配一套圖解決問(wèn)題

3. 適應(yīng)換膚要求，使用方便。

3.怎么用iconfont

1. 首先去iconfont圖標(biāo)庫(kù)下載自己需要的圖標(biāo)。

簡(jiǎn)書(shū)里竟然gif大小限制的這么厲害，所以將動(dòng)圖放到項(xiàng)目里了，需要的在文末有g(shù)it地址

如圖我們可以選擇自己需要的icon加入到購(gòu)物車(chē)，然后加入項(xiàng)目里，當(dāng)然你也可以直接在購(gòu)物車(chē)直接下載，但是這樣只是沒(méi)有修改icon為自己想要的樣式，加入項(xiàng)目中，你可以自己任意修改icon為自己想要的樣式。

注意：這里是下載代碼，這樣我們就可以在項(xiàng)目中直接使用

2.將下載下來(lái)的icon資源添加到自己的項(xiàng)目中。

我們所需要的就是這個(gè)iconfont.ttf，對(duì)于這個(gè)ttf文件，我想我們并不陌生吧。新建項(xiàng)目，將這個(gè)ttf文件拖入自己的項(xiàng)目里。

注意：勾選如圖選項(xiàng)

接下來(lái)配置項(xiàng)目加載這個(gè)文件

檢查文件是否在項(xiàng)目中，不然會(huì)崩潰

在plist文件中加入字體

接下來(lái)我們借助淘點(diǎn)點(diǎn)科技寫(xiě)的一個(gè)關(guān)于iconfont封裝，方便我們使用iconfont。iconfont的封裝包括

工具類(lèi)

TBCityIconInfo.h的實(shí)現(xiàn)

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

@interface TBCityIconInfo : NSObject

@property (nonatomic, strong) NSString *text;
@property (nonatomic, assign) NSInteger size;
@property (nonatomic, strong) UIColor *color;

- (instancetype)initWithText:(NSString *)text size:(NSInteger)size color:(UIColor *)color;
+ (instancetype)iconInfoWithText:(NSString *)text size:(NSInteger)size color:(UIColor *)color;

@end

TBCityIconInfo.m的實(shí)現(xiàn)

#import "TBCityIconInfo.h"

@implementation TBCityIconInfo

- (instancetype)initWithText:(NSString *)text size:(NSInteger)size color:(UIColor *)color {
 if (self = [super init]) {
  self.text = text;
  self.size = size;
  self.color = color;
 }
 return self;
}

+ (instancetype)iconInfoWithText:(NSString *)text size:(NSInteger)size color:(UIColor *)color {
 return [[TBCityIconInfo alloc] initWithText:text size:size color:color];
}

@end

TBCityIconFont.h的實(shí)現(xiàn)

#import "UIImage+TBCityIconFont.h"
#import "TBCityIconInfo.h"

#define TBCityIconInfoMake(text, imageSize, imageColor) [TBCityIconInfo iconInfoWithText:text size:imageSize color:imageColor]

@interface TBCityIconFont : NSObject

+ (UIFont *)fontWithSize: (CGFloat)size;
+ (void)setFontName:(NSString *)fontName;

TBCityIconFont.m的實(shí)現(xiàn)

#import "TBCityIconFont.h"
#import <CoreText/CoreText.h>

@implementation TBCityIconFont

static NSString *_fontName;

+ (void)registerFontWithURL:(NSURL *)url {
 NSAssert([[NSFileManager defaultManager] fileExistsAtPath:[url path]], @"Font file doesn't exist");
 CGDataProviderRef fontDataProvider = CGDataProviderCreateWithURL((__bridge CFURLRef)url);
 CGFontRef newFont = CGFontCreateWithDataProvider(fontDataProvider);
 CGDataProviderRelease(fontDataProvider);
 CTFontManagerRegisterGraphicsFont(newFont, nil);
 CGFontRelease(newFont);
}

+ (UIFont *)fontWithSize:(CGFloat)size {
 UIFont *font = [UIFont fontWithName:[self fontName] size:size];
 if (font == nil) {
  NSURL *fontFileUrl = [[NSBundle mainBundle] URLForResource:[self fontName] withExtension:@"ttf"];
  [self registerFontWithURL: fontFileUrl];
  font = [UIFont fontWithName:[self fontName] size:size];
  NSAssert(font, @"UIFont object should not be nil, check if the font file is added to the application bundle and you're using the correct font name.");
 }
 return font;
}

+ (void)setFontName:(NSString *)fontName {
 _fontName = fontName;
 
}


+ (NSString *)fontName {
 return _fontName ? : @"iconfont";
}

@end

UIImage+TBCityIconFont.h的實(shí)現(xiàn)

#import <UIKit/UIKit.h>
#import "TBCityIconInfo.h"

@interface UIImage (TBCityIconFont)

+ (UIImage *)iconWithInfo:(TBCityIconInfo *)info;

@end
UIImage+TBCityIconFont.m的實(shí)現(xiàn)
#import "UIImage+TBCityIconFont.h"
#import "TBCityIconFont.h"
#import <CoreText/CoreText.h>

@implementation UIImage (TBCityIconFont)

+ (UIImage *)iconWithInfo:(TBCityIconInfo *)info {
 CGFloat size = info.size;
 CGFloat scale = [UIScreen mainScreen].scale;
 CGFloat realSize = size * scale;
 UIFont *font = [TBCityIconFont fontWithSize:realSize];
 UIGraphicsBeginImageContext(CGSizeMake(realSize, realSize));
 CGContextRef context = UIGraphicsGetCurrentContext();
 
 if ([info.text respondsToSelector:@selector(drawAtPoint:withAttributes:)]) {
  /**
   * 如果這里拋出異常，請(qǐng)打開(kāi)斷點(diǎn)列表，右擊All Exceptions -> Edit Breakpoint -> All修改為Objective-C
   * See: http://stackoverflow.com/questions/1163981/how-to-add-a-breakpoint-to-objc-exception-throw/14767076#14767076
   */
  [info.text drawAtPoint:CGPointZero withAttributes:@{NSFontAttributeName:font, NSForegroundColorAttributeName: info.color}];
 } else {
  
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
  CGContextSetFillColorWithColor(context, info.color.CGColor);
  [info.text drawAtPoint:CGPointMake(0, 0) withFont:font];
#pragma clang pop
 }
 
 UIImage *image = [UIImage imageWithCGImage:UIGraphicsGetImageFromCurrentImageContext().CGImage scale:scale orientation:UIImageOrientationUp];
 UIGraphicsEndImageContext();
 
 return image;
}

@end

3.具體使用方法

1.在AppDelegate.m中，初始化iconfont

#import "AppDelegate.h"
#import "TBCityIconFont.h"
#import "ViewController.h"
@interface AppDelegate ()

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
 // Override point for customization after application launch.
 [TBCityIconFont setFontName:@"iconfont"];
 UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:[ViewController new]];
 self.window.rootViewController = nav;
 [self.window makeKeyAndVisible];
 return YES;
}

在ViewController.m中實(shí)現(xiàn)

#import "ViewController.h"
#import "TBCityIconFont.h"
#import "UIImage+TBCityIconFont.h"
@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
 [super viewDidLoad];
 self.view.backgroundColor = [UIColor whiteColor];
 UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(100, 100, 30, 30)];
 [self.view addSubview:imageView];
 //圖標(biāo)編碼是&#xe600，需要轉(zhuǎn)成\U0000e600
 imageView.image = [UIImage iconWithInfo:TBCityIconInfoMake(@"\U0000e600", 30, [UIColor redColor])];
 
 
 // button
 UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];
 button.frame = CGRectMake(100, 150, 40, 40);
 [self.view addSubview:button];
 [button setImage:[UIImage iconWithInfo:TBCityIconInfoMake(@"\U0000e614", 40, [UIColor redColor])] forState:UIControlStateNormal];
 
 // label,label可以將文字與圖標(biāo)結(jié)合一起，直接用label的text屬性將圖標(biāo)顯示出來(lái)
 UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(50, 200, 280, 40)];
 [self.view addSubview:label];
 label.font = [UIFont fontWithName:@"iconfont" size:15];//設(shè)置label的字體
 label.text = @"在lable上顯示 \U0000e658";
 
 

 // Do any additional setup after loading the view, typically from a nib.
}


- (void)didReceiveMemoryWarning {
 [super didReceiveMemoryWarning];
 // Dispose of any resources that can be recreated.
}


@end

結(jié)果如下圖所示：