获取当前所有字体,查看是否有UI要求设置的字体

UIFont *font = [UIFont systemFontOfSize:[UIFont systemFontSize]];
    
    NSLog(@"当前字体。。。 %@",font);
    
    
    
    NSMutableArray *familyNameArray = [[NSMutableArray alloc] init];
    
    NSArray* familyNamesAll = [UIFont familyNames];
    
    
    
    for (id family in familyNamesAll) {
        
        NSArray* fonts = [UIFont fontNamesForFamilyName:family];
        
        for (id font in fonts)
            
        {
            
            [familyNameArray addObject:font];
            
        }
        
    }
    
    NSLog(@"所有字体 %@",familyNameArray);