IOS read-write XML file

Write the file, pass in the information to be saved *********//Save the XML

-(void) SaveXML: (NSString *) data

{

Creating a File Manager

Nsfilemanager *filemanager = [Nsfilemanager Defaultmanager];

Get path

Parameter nsdocumentdirectory to get that path

Nsarray *paths = Nssearchpathfordirectoriesindomains (NSDocumentDirectory, Nsuserdomainmask, YES);

NSLog (@ "paths=%@", paths);

NSString *documentsdirectory = [Paths path required for objectatindex:0];//destination

NSLog (@ "documentsdirectory=%@", documentsdirectory);

Change to the directory you want to operate

NSLog (@ "[Documentsdirectory stringbyexpandingtildeinpath]=%@", [Documentsdirectory Stringbyexpandingtildeinpath]) ;

[FileManager changecurrentdirectorypath:[documentsdirectory Stringbyexpandingtildeinpath];

Create file FileName File name, contents file contents, if Start no content can be set to Nil,attributes file properties, initially nil

Get file path

[FileManager removeitematpath:@ "username" Error:nil];

NSString *path = [documentsdirectory stringbyappendingpathcomponent:@ "Cc.txt"];

NSLog (@ "path=%@", Path);

Create a data buffer

Nsmutabledata *writer = [[Nsmutabledata alloc] init];

Add a string to the buffer

NSLog (@ "[File datausingencoding:nsutf8stringencoding]=%@", [File Data usingencoding:nsutf8stringencoding]);

[writer Appenddata:[data datausingencoding:nsutf8stringencoding]];

Add additional data to the buffer

Write buffered data to a file

[Writer Writetofile:path Atomically:yes];

}

/****** file Read ******/

-(NSString *) readXml

{

Creating a File Manager

Nsfilemanager *filemanager = [Nsfilemanager Defaultmanager];

Get path

Parameter nsdocumentdirectory to get that path

Nsarray *paths = Nssearchpathfordirectoriesindomains (NSDocumentDirectory, Nsuserdomainmask, YES);

NSString *documentsdirectory = [Paths path required for objectatindex:0];//destination

Change to the directory you want to operate

[FileManager changecurrentdirectorypath:[documentsdirectory Stringbyexpandingtildeinpath];

Get file path filename is cc.txt

NSString *path = [documentsdirectory stringbyappendingpathcomponent:@ "Cc.txt"];

NSData *reader = [NSData Datawithcontentsoffile:path];

return [[NSString alloc] Initwithdata:reader

Encoding:nsutf8stringencoding];

}