Save Array of feature in documentdirectory

Question

Hi,

i have a NSMutableArray whit Feature and i want to write the NSMutableArray to my NSDocumentDirectory.

my code :

NSLog(@ARRAY CARTE SCOLAIRE :%@", arrayCarteScolaire);

NSArray *arrayCarteSauvegarde = [[NSArray alloc] initWithArray:arrayCarteScolaire];

NSLog(@ARRAY SAUVEGARDE :%@", arrayCarteSauvegarde);

NSString* imageFilename = [NSString stringWithFormat:@SAUVEGARDE CARTE %@", anneeChoisiTab];

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documentsDirectory = [paths objectAtIndex:0];

NSString* imageFilePathname = [documentsDirectory stringByAppendingPathComponent:imageFilename];

//on fait la verif pour voir s'il y a les images du bundle dans le DocumentDirectory

if ([[NSFileManager defaultManager] fileExistsAtPath:imageFilePathname]) {

NSLog(@Fichier %@ déjà présent dans le dossier document - Voir pour la modification", imageFilename);

//on efface et on copie

NSError *error;

BOOL success = [[NSFileManager defaultManager] removeItemAtPath:imageFilePathname error:&error];

if (success) {

NSLog(@Le fichier %@ a bien été effacé", imageFilename);

//UIAlertView *removeSuccessFulAlert=[[UIAlertView alloc]initWithTitle:@Congratulation: message:@Successfully removed delegate:self cancelButtonTitle:@Close otherButtonTitles:nil];

//[removeSuccessFulAlert show];

}

else

{

NSLog(@Could not delete file -:%@ ",[error localizedDescription]);

}

//on copie le fichier

NSError *error2;

BOOL yes = [arrayCarteSauvegarde writeToFile:imageFilePathname atomically:YES];

if (yes) {

NSLog(@Fichier %@ créer", imageFilename);

}

else {

NSLog(@Could not create file -:%@ ",[error2 localizedDescription]);

}

else {

NSLog(@Fichier %@ non présent dans le dossier document", imageFilename);

//on va copier le fichier normalement

NSError *error2;

BOOL yes = [arrayCarteSauvegarde writeToFile:imageFilePathname atomically:YES];

//BOOL yes = [NSKeyedArchiver archiveRootObject:arrayCarteSauvegarde toFile:imageFilePathname];

if (yes) {

NSLog(@Fichier %@ créer", imageFilename);

}

else {

NSLog(@Could not create file -:%@ ",[error2 localizedDescription]);

}

The file is not create in the document directory but no crash.

With this code :

else {

NSLog(@Fichier %@ non présent dans le dossier document", imageFilename);

//on va copier le fichier normalement

NSError *error2;

//BOOL yes = [arrayCarteSauvegarde writeToFile:imageFilePathname atomically:YES];

BOOL yes = [NSKeyedArchiver archiveRootObject:arrayCarteSauvegarde toFile:imageFilePathname];

if (yes) {

NSLog(@Fichier %@ créer", imageFilename);

}

else {

NSLog(@Could not create file -:%@ ",[error2 localizedDescription]);

}

The app crash with this error :

2015-11-10 13:42:59.243 Ecoles Colleges 06 Antibes[211:11878] -[AGSGDBFeature encodeWithCoder:]: unrecognized selector sent to instance 0x1742a05a0

2015-11-10 13:42:59.245 Ecoles Colleges 06 Antibes[211:11878] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[AGSGDBFeature encodeWithCoder:]: unrecognized selector sent to instance 0x1742a05a0'

Thanks for regards.

Stounfr

SotlarStéphane · Answer

the how to :

for save

NSMutableArray *arrayCarteSauvegarde = [[NSMutableArray alloc] init];

for (int i=0; i <[arrayCarteScolaire count]; i++) {

AGSGDBFeature *feat = [arrayCarteScolaire objectAtIndex:i];

NSDictionary *dicFeat = feat.allAttributes;

NSDictionary *dicFeat2 = [dicFeat ags_encodeJSON];

NSString *stringJSON = [dicFeat2 ags_JSONRepresentation];

NSLog(@STRING FEATURE : %@", stringJSON);

[arrayCarteSauvegarde addObject:stringJSON];

NSLog(@%@", feat.geometry);

//NSLog(@JSON : %@", dicFeat2);

}

BOOL yes = [arrayCarteSauvegarde writeToFile:imageFilePathname atomically:YES];

//BOOL yes = [NSKeyedArchiver archiveRootObject:arrayCarteSauvegarde toFile:imageFilePathname];

//BOOL yes = [dataArray writeToFile:imageFilePathname atomically:YES];

if (yes) {

NSLog(@Fichier %@ créer", imageFilename);

}

else {

NSLog(@Could not create file -:%@ ",[error2 localizedDescription]);

}

for load

retourCarte = [NSArray arrayWithContentsOfFile:imageFilePathname];

for (int i=0; i<[retourCarte count]; i++) {

//Bon on récupère les infos

//NSDictionary *dicFeat = [retourCarte objectAtIndex:i];

NSString *testJSON = [retourCarte objectAtIndex:i];

NSLog(@TEST JSON SHAPE : %@", testJSON);

NSDictionary *dicFeat = [testJSON ags_JSONValue];

NSLog(@DICO JSON : %@", dicFeat);

NSDictionary *geoDict = [dicFeat valueForKey:@shape];

NSLog(@SHAPE : %@", geoDict);

AGSGeometry *geom = [[AGSGeometry alloc] initWithJSON:geoDict];

NSLog(@GEOMETRY : %@", geom);

AGSMutablePolygon *testTest = [[AGSMutablePolygon alloc] initWithJSON:geoDict];

NSLog(@POLYGON : %@", testTest);

/*NSDictionary *dicFeat2 = [testJSON ags_JSONValue];

//NSLog(@DIC JASON TRAITER : %@", dicFeat2);

feat = [retourCarte objectAtIndex:i];

//NSLog(@FEAT : %@", feat);

feat2.geometry = geom;

//NSLog(@FEAT 2 : %@", feat2);

//[arrayCarteScolaire addObject:feat];*/

//AGSGraphic *test = [[AGSGraphic alloc] initWithJSON:geoDict];

AGSGraphic *test = [[AGSGraphic alloc] initWithGeometry:testTest symbol:nil attributes:dicFeat];

NSLog(@AGSGraphic = %@", test);

[arrayCarteScolaire addObject:test];

}

Stounfr

SotlarStéphane · Answer

Hi,

I want to copy AGSGDBFeature array in the device because i dont what modify the geodatabase.

When the user quit the app and reload it, i want that the app charge the geodatabase not modified and if the user want charge the modified Feature the app take the AGSGDBFeature.

Stounfr

KristofferStenersen · Answer

Hi, the AGSGDBFeature cannot be saved to disk like this, as it does not subclass NSCoder.

I guess a reasonable question is why you want to persist the AGSGDBFeatures yourself - why not use the AGSGDBFeatureTable´s saveFeature?