NSURL

1:NSURL初始化方法:

NSURL *url=[NSURL URLWithString:@"http://www.baidu.com?id=1"];  

2:解決NSURL初始化失敗的相關解決方案.

將傳進來的NSString 進行 UTF8 轉碼即可.

1:針對 URLWithString 初始化失敗的解決方案

NSString *strLocalHtml = @"file:///Users/amarishuyi/Desktop/My IPhone Life/WebDeveloper/WebPlug-in/ExtEditor/DataPage/KMQT/Ext-HTMLEditor.html";  strLocalHtml = [NSString stringWithFormat:@"%@?Value=%@",strLocalHtml,self.txtUrl.text];  strLocalHtml= [strLocalHtml stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];  NSURL * url=[NSURL URLWithString:strLocalHtml];  

2:針對 fileURLWithPath 初始化失敗的解決方案

轉碼成功后 會自動 在字符串左側添加 "file:///"

3:NSURL 成功初始化后可以獲取的參數NSURL *url = [NSURL URLWithString:  @"http://www.baidu.com/s?tn=baiduhome_pg&bs=NSRUL&f=8&rsv_bp=1&rsv_spt=1&wd=NSurl&inputT=2709"];     NSLog(@"Scheme: %@", [url scheme]);   

NSLog(@"Host: %@", [url host]);   

NSLog(@"Port: %@", [url port]);       

NSLog(@"Path: %@", [url path]);       

NSLog(@"Relative path: %@", [url relativePath]);  

NSLog(@"Path components as array: %@", [url pathComponents]);          

NSLog(@"Parameter string: %@", [url parameterString]);     

NSLog(@"Query: %@", [url query]);         

NSLog(@"Fragment: %@", [url fragment]); 

NSLog(@"User: %@", [url user]); 

NSLog(@"Password: %@", [url password]);  

結果如下:

2012-03-31 18:22:20.904 SmallDemoList[5473:11603] 12131232  2012-03-31 18:22:20.907 SmallDemoList[5473:11603] Scheme: http  2012-03-31 18:22:20.907 SmallDemoList[5473:11603] Host: www.baidu.com  2012-03-31 18:22:20.907 SmallDemoList[5473:11603] Port: (null)  2012-03-31 18:22:20.907 SmallDemoList[5473:11603] Path: /s  2012-03-31 18:22:20.907 SmallDemoList[5473:11603] Relative path: /s  2012-03-31 18:22:20.907 SmallDemoList[5473:11603] Path components as array: ("/", s  )  2012-03-31 18:22:20.916 SmallDemoList[5473:11603] Parameter string: (null)  2012-03-31 18:22:20.917 SmallDemoList[5473:11603] Query: tn=baiduhome_pg&bs=NSRUL&f=8&rsv_bp=1&rsv_spt=1&wd=NSurl&inputT=2709 

2012-03-31 18:22:20.917 SmallDemoList[5473:11603] Fragment: (null)  2012-03-31 18:22:20.917 SmallDemoList[5473:11603] User: (null)  2012-03-31 18:22:20.917 SmallDemoList[5473:11603] Password: (null) 

4:根據文件名稱和文件后綴獲取程序包內容文件的路徑

NSURL *urlKindEditor = [[NSBundlemainBundle]URLForResource:@"simple"withExtension:@"html"subdirectory:@"KindEditor/examples"]; 

URLForResource:文件名稱

withExtension:文件后綴

subdirectory:在程序包中的哪個子目錄中尋找. 

如果沒有找到將會返回nil

找到后返回如下路徑: file://localhost/Users/amarishuyi/Library/Application%20Support/iPhone%20Simulator/5.1/Applications/FB0CDABC-D0E2-45FF-AA2C-959E8A65ADB4/SmallDemoList.app/KindEditor/examples/simple.html

5:對比兩個URL 是否相等

[url isEqual:[_audioPlayer url]]