如何從RTF

轉換我將一些RTF文本到NSAttributedString使用該代碼時設置NSAttributedText邊距（Xamarin C＃，但相同的邏輯適用於夫特/的OBJ-C）如何從RTF

NSData data = NSData.FromString(RTFString); 
NSDictionary opt = NSDictionary.FromObjectAndKey(NSObject.FromObject("NSDocumentTypeDocumentAttribute"), NSObject.FromObject(NSDocumentType.RTF)); 
NSDictionary docatt = null; 
NSError error = null; 
NSAttributedString sRTF = new NSAttributedString(data, opt, out docatt, ref error);

此效果很好，但是在轉換RTF文本時，它似乎設置了默認的右邊距值，以便文本不會流過UILabel的整個寬度。原始RTF文本中沒有設置保證金值。

如何更改或設置生成的屬性文本的右邊距值，以使其流過標籤的整個寬度？

樣品RTF

sample.rtf

{\\rtf1\\ansi\\ansicpg1252\\uc1\\htmautsp\\deff2{\\fonttbl{\\f0\\fcharset0 Times New Roman;}{\\f2\\fcharset0 Segoe UI;}}{\\colortbl\\red0\\green0\\blue0;\\red255\\green255\\blue255;\\red255\\green165\\blue0;}\\loch\\hich\\dbch\\pard\\plain\\ltrpar\\itap0{\\lang1033\\fs26\\f2\\cf0 \\cf0\\ql{\\f2 {\\b\\fs30\\cf2\\ltrch 1. Gum/Lip Irritation: }{\\fs24\\ltrch Whitening gel that comes into contact with gum tissue or the lips can become inflammed or bleached. The inflammation or whitening effect is temporary. You may feel a stinging and/or tingling sensation on these soft tissues during the treatment.2. Tooth Sensitivity: You may experience some tooth sensitivity during the first 24 hours after your treatment. Underlying tooth/gum disease such as existing sensitivity, cracked teeth, open cavities, leaking fillings, exposed roots or other dental conditions may worsen or prolong tooth sensitivity after treatment.3. Spots or Streaks: There is a potential to develop white spots or streaks on your teeth due to calcium deposits that naturally occur in teeth. These spots are not caused by Beaming White gel. The gel just brings these calcium deposits out and makes them more visible. This effect will fade over time.4. Relapse: After your treatment, it is natural for teeth color to regress over time. This relapse can be slowed down by avoiding staining agents such as coffee, tea, tobacco, red wine, colas etc. It is very important to avoid these staining agents, especially during the first 24 hours after treatment. I understand that the results of my treatment are not permanent, that up to 3 applications may be needed for desired effect and maintanence treatment every recommended very 4-6 months.}\\li0\\ri0\\sa0\\sb0\\fi0\\ql\\par}\r\n}\r\n}