我是iOS开发的新手，我需要你的帮助。我需要创建一个xml的plist文件.xml就像
<?xml version="1.0" encoding= "UTF-8" ?>
<nutrition>
<nutritiontype item="Calories">
<milk>113</milk>
<fat>98</fat>
<fatfree>68</fatfree>
<pacific>60</pacific>
</nutritiontype>
<nutritiontype item="Total calories">
<milk>6g</milk>
<fat>4g</fat>
<fatfree>0g</fatfree>
<pacific>2g</pacific>
</nutritiontype>
<nutritiontype item="Saturated Fat">
<milk>4g</milk>
<fat>2g</fat>
<fatfree>0g</fatfree>
<pacific>0g</pacific>
</nutritiontype>
<nutritiontype item="Cholesterol">
<milk>26mg</milk>
<fat>15mg</fat>
<fatfree>0mg</fatfree>
<pacific>0mg</pacific>
</nutritiontype>
<nutritiontype item="Sodium">
<milk>94mg</milk>
<fat>105mg</fat>
<fatfree>105mg</fatfree>
<pacific>173mg</pacific>
</nutritiontype>
<nutritiontype item="Carbohydrates">
<milk>8g</milk>
<fat>10g</fat>
<fatfree>10g</fatfree>
<pacific>5g</pacific>
</nutritiontype>
<nutritiontype item="Dietary Fiber">
<milk>0g</milk>
<fat>0g</fat>
<fatfree>0g</fatfree>
<pacific>0g</pacific>
</nutritiontype>
<nutritiontype item="Sugars">
<milk>8g</milk>
<fat>10g</fat>
<fatfree>10g</fatfree>
<pacific>5g</pacific>
</nutritiontype>
<nutritiontype item="Protein">
<milk>6g</milk>
<fat>8g</fat>
<fatfree>8g</fatfree>
<pacific>4g</pacific>
</nutritiontype>
<nutritiontype item="Vitamin A">
<milk>5%</milk>
<fat>8%</fat>
<fatfree>8%</fatfree>
<pacific>0%</pacific>
</nutritiontype>
<nutritiontype item="Vitamin C">
<milk>2%</milk>
<fat>2%</fat>
<fatfree>2%</fatfree>
<pacific>0%</pacific>
</nutritiontype>
</nutrition>
请给我一些参考，以便我可以继续。
谢谢..