NSString *sampStr = @"開發者ADreamClusive";

NSMutableAttributedString *fontStr = [NSMutableAttributedString new];

for(NSString * familyName in [UIFont familyNames]){
//        NSLog(@"字型族科名 = %@",familyName); // 輸出字型族科名字
    NSAttributedString *aAttrStr = [[NSAttributedString alloc] initWithString:[NSString stringWithFormat:@"字型族:%@\n", familyName] attributes:@{ NSFontAttributeName: [UIFont boldSystemFontOfSize:18], NSForegroundColorAttributeName: [UIColor redColor] }];
    
    [fontStr appendAttributedString:aAttrStr];
    
    
    for(NSString *fontName in [UIFont fontNamesForFamilyName:familyName]){
//            NSLog(@"\t%@",fontName); // 輸出字型族科下字樣名字
        
        NSAttributedString *bAttrStr = [[NSAttributedString alloc] initWithString:[NSString stringWithFormat:@"%@:\t", fontName] attributes:@{ NSFontAttributeName: [UIFont systemFontOfSize:14] }];
        [fontStr appendAttributedString:bAttrStr];
        
        
        NSAttributedString *cAttrStr = [[NSAttributedString alloc] initWithString:[NSString stringWithFormat:@"%@\n", sampStr] attributes:@{ NSFontAttributeName: [UIFont fontWithName:fontName size:14] }];
        [fontStr appendAttributedString:cAttrStr];
        
    }
    
}
// textView為UITextView
self.textView.attributedText = fontStr;