{"id":4164,"date":"2012-05-25T11:15:51","date_gmt":"2012-05-25T10:15:51","guid":{"rendered":"http:\/\/www.iprog.it\/blog\/?p=4164"},"modified":"2012-05-25T13:17:08","modified_gmt":"2012-05-25T12:17:08","slug":"popolare-una-tableview-tramite-property-list-plist","status":"publish","type":"post","link":"https:\/\/www.iprog.it\/blog\/objective-c-ios\/popolare-una-tableview-tramite-property-list-plist\/","title":{"rendered":"Popolare una TableView tramite Property List – plist"},"content":{"rendered":"

\"\"<\/a><\/p>\n

Ciao a tutti ragazzi dopo molte richieste riguardanti a questo argomento ho deciso di creare un tutorial quindi per prima cosa creiamo un nuovo progetto di tipo single view application<\/p>\n

\"\"<\/a><\/p>\n

Spuntiamo le voci use storyboard e use automatic reference<\/p>\n

Fatto ci\u00f2 dobbiamo eliminare \u00a0i due file viewcontroller .h e .m poi recandoci nel file storyboard eliminiamo la vista presente nel suo interno.<\/p>\n

Ora dobbiamo creare prima un nuovo file con sottoclasse \u00a0UITableViewController \u00a0e lo chiamiamo\u00a0TableViewController poi creiamo un nuovo file di tipo property list<\/p>\n

\"\"<\/a><\/p>\n

Ora non ci resta che popolare la nostra property list, una volta entrati nel file fare un click col tasto destro e selezioniamo add row come key gli diamo nomi e tipo array poi riempiamola come segue :<\/p>\n

\"\"<\/a><\/p>\n

Fatto ci\u00f2 dobbiamo inserire all’interno dello storyboard una tableview controller per poi settare la sua classe con quella creata da noi precedentemente e in fine settare come identifier cell<\/p>\n

\"\"<\/a><\/p>\n

\"\"<\/a><\/p>\n

L’ultimo passo da compiere e quello di scrivere il codice quindi all’interno del file tableviewcontroller.h scriveremo quanto segue:<\/p>\n

[code lang=”obj-c”]<\/p>\n

#import <UIKit\/UIKit.h><\/p>\n

@interface TableViewController : UITableViewController<\/p>\n

@property(strong,nonatomic)NSArray *nomiArray;\/\/dichiariamo un array<\/p>\n

-(void)alert:(NSString*)aMassage;<\/p>\n

-(NSArray*)leggoDallaProperty:(NSString*)NomeFile;<\/p>\n

@end<\/p>\n

[\/code]<\/p>\n

Mentre all’interno del file con l’estensione .m quest’altro codice :<\/p>\n

[code lang=”obj-c”]<\/p>\n

#import "TableViewController.h"<\/p>\n

@implementation TableViewController
\n@synthesize nomiArray;
\n-(void)viewDidLoad{
\n[super viewDidLoad];
\n\/\/riempiamo l’array con il contenuto della property creata Precedentemente
\n[self setNomiArray:[self leggoDallaProperty:@"Lista"]];
\n}
\n– (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
\nreturn 1;
\n}
\n\/\/crea una riga per ogni elemento all’interno della property
\n– (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
\n{
\nreturn [[self nomiArray] count];
\n}
\n– (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
\n{
\nNSArray *names = [[self nomiArray]
\nsortedArrayUsingSelector: @selector(localizedCaseInsensitiveCompare:)];
\nstatic NSString *CellIdentifier = @"Cell"; UITableViewCell *cell =
\n[tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) {
\ncell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
\n}
\n[[cell textLabel] setText:[names objectAtIndex:[indexPath row]]]; return cell;
\n}
\n\/\/indica quale riga e selezionata e passa "l’elemeto" al metodo allert
\n– (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
\n{
\n[tableView deselectRowAtIndexPath:indexPath animated:YES]; NSArray *names = [[self nomiArray]
\nsortedArrayUsingSelector: @selector(localizedCaseInsensitiveCompare:)];
\n[self alert:[names objectAtIndex:[indexPath row]]];
\n}
\n\/\/metodo alertView niente di particolare
\n– (void)alert:(NSString *)aMessage {
\nUIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Hai selezionato "
\nmessage:aMessage
\ndelegate:self cancelButtonTitle:nil
\notherButtonTitles:@"OK", nil];
\n[alert show];
\n}
\n\/\/Caricare l’elenco all’interno della property dalla memoria locale. Il metodo in questione (leggoDallaProperty) viene richiamato all’interno del metodo viewDidLoad.
\n-(NSArray*)leggoDallaProperty:(NSString*)NomeFile{
\nNSString *errorDesc = nil;
\nNSPropertyListFormat format;
\nNSString *plistPath = [[NSBundle mainBundle] pathForResource:NomeFile
\nofType:@"plist"];
\nNSData *plistXML=[[NSFileManager defaultManager]contentsAtPath:plistPath];
\nNSDictionary *temp = (NSDictionary *)[NSPropertyListSerialization propertyListFromData:plistXML mutabilityOption:NSPropertyListMutableContainersAndLeaves
\nformat:&format errorDescription:&errorDesc];
\nreturn [temp objectForKey:@"nomi"];
\n}
\n[\/code]<\/p>\n

Se avete eseguito attentamente le mie istruzioni il risultato finale sar\u00e0 simile a questo :<\/p>\n

\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Ciao a tutti ragazzi dopo molte richieste riguardanti a questo argomento ho deciso di creare un tutorial quindi per prima cosa creiamo un nuovo progetto di tipo single view application Spuntiamo le voci use storyboard e use automatic reference Fatto ci\u00f2 dobbiamo eliminare \u00a0i due file viewcontroller .h e .m… Read more »<\/a><\/p>\n","protected":false},"author":1,"featured_media":4179,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[1339,1051,28,1697,1698,71,961,403],"class_list":["post-4164","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-objective-c-ios","tag-application","tag-ciao","tag-ios","tag-list","tag-plist","tag-property","tag-storyboard","tag-tableview"],"yoast_head":"\nPopolare una TableView tramite Property List - plist - iProg<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.iprog.it\/blog\/objective-c-ios\/popolare-una-tableview-tramite-property-list-plist\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Popolare una TableView tramite Property List - plist - iProg\" \/>\n<meta name=\"twitter:description\" content=\"Ciao a tutti ragazzi dopo molte richieste riguardanti a questo argomento ho deciso di creare un tutorial quindi per prima cosa creiamo un nuovo progetto di tipo single view application Spuntiamo le voci use storyboard e use automatic reference Fatto ci\u00f2 dobbiamo eliminare \u00a0i due file viewcontroller .h e .m... 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