IOS data persistence 1

-(Void) loadview

{

Uiview * aview = [[uiview alloc] initwithframe: cgrectmake (0, 0,320,480)];

Aview. backgroundcolor = [uicolor whitecolor];

Self. view = aview;

[Aview release];

T1 = [[uitextfield alloc] initwithframe: cgrectmake (80, 30, 80, 30)];

T1.borderstyle = uitextborderstyleroundedrect;

T1.text = @"";

[Aview addsubview: T1];

T2 = [[uitextfield alloc] initwithframe: cgrectmake (80,120, 80, 30)];

T2.borderstyle = uitextborderstyleroundedrect;

T2.text = @"";

[Aview addsubview: T2];

T3 = [[uitextfield alloc] initwithframe: cgrectmake (80,210, 80, 30)];

T3.borderstyle = uitextborderstyleroundedrect;

T3.text = @"";

[Aview addsubview: T3];

Nsfilemanager * fm = [nsfilemanager defamanager manager];

If ([FM fileexistsatpath: [self filepath]) //If any file exists, it is retrieved from the file.,Read from File

{

Nsarray * arr = [nsarray arraywithcontentsoffile: [self filepath];

T1.text = [arr objectatindex: 0];

T2.text = [arr objectatindex: 1];

T3.text = [arr objectatindex: 2];

}

Nslog (@ "% @", [self filepath]);

//Background running

[[Nsicationcenter center defacenter center] addobserver: Self selector: @ selector (savedata) Name: uiapplicationdidenterbackgroundnotification object: Nil];

}

-(Void) savedata

{

Nsarray * Texts = [nsarray arraywithobjects: t1.text, t2.text, t3.text, nil];

[Texts writetofile: [self filepath] atomically: Yes]; //Store data in a file

}

-(Nsstring *) filepath

{

// DocumentPath

Nsstring * docpath = [nssearchpathfordirectoriesindomains (nsdocumentdirectory, nsuserdomainmask, yes) objectatindex: 0];

Nsstring * Path = [docpath stringbyappendingpathcomponent: @ "texs"];

ReturnPath;

}