iOS 添加自定义文字字体样式

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
rray *familyNames = [UIFont familyNames];
    for( NSString *familyName in familyNames ){
        printf( "Family: %s \n", [familyName UTF8String] );
        NSArray *fontNames = [UIFont fontNamesForFamilyName:familyName];
        for( NSString *fontName in fontNames ){
            printf( "\tFont: %s \n", [fontName UTF8String] );
        }
    }
    return YES;

[titleBtn.titleLabel setFont:[UIFont fontWithName:@"FZZDHJW--GB1-0" size:15]];