はい。絶対に可能です。あなたはCTFontManagerRegisterGraphicsFont
を見る必要があります。
ここでの使用例です:
NSData *inData = /* your decrypted font-file data */;
CFErrorRef error;
CGDataProviderRef provider = CGDataProviderCreateWithCFData((CFDataRef)inData);
CGFontRef font = CGFontCreateWithDataProvider(provider);
if (! CTFontManagerRegisterGraphicsFont(font, &error)) {
CFStringRef errorDescription = CFErrorCopyDescription(error)
NSLog(@"Failed to load font: %@", errorDescription);
CFRelease(errorDescription);
}
CFRelease(font);
CFRelease(provider);
スウィフトバージョン:
func loadFont(_ name: String) -> Bool {
let bundle = Bundle(for: self)
guard let fontPath = bundle.path(forResource: name, ofType: "ttf"),
let data = try? Data(contentsOf: URL(fileURLWithPath: fontPath)),
let provider = CGDataProvider(data: data as CFData)
else {
return false
}
let font = CGFont(provider)
var error: Unmanaged<CFError>?
let success = CTFontManagerRegisterGraphicsFont(font, &error)
if !success {
print("Error loading font. Font is possibly already registered.")
return false
}
return true
}
https://marco.org/2012/12/21/ios-dynamic-font-loading