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POObj-C Load Custom .plist file on load - iPhone
 

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    <p>I'm looking to load a specific .plist file dependant on a settings variable (<code>area</code> in this case) and what button a user pressed. The file format for the .plist will be area-buttonPressed.plist. Below is the code that is used to call the specific .plist file (currently just dependant on the current area)</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; NSLog(@"viewDidLoad"); self.navigationItem.title = @"Species List"; } -(void)viewWillAppear:(BOOL)animated{ NSLog(@"viewWillAppear"); area = [[NSUserDefaults standardUserDefaults] stringForKey:@"mulValue"]; NSLog(@"Area is %@",area); NSString *path = [[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"%@", area] ofType:@"plist"]; NSLog(@"Path is %@",path); NSMutableDictionary *dict = [[NSDictionary alloc] initWithContentsOfFile:path]; self.names = dict; [dict release]; NSArray *array = [[names allKeys] sortedArrayUsingSelector:@selector(compare:)]; self.keys = array; } </code></pre> <p>My main issue is that if I put the code that's currently in the viewWillAppear in the viewDidLoad, it won't get called again if I navigate back (I'm using a NavigationController), change the area in the settings and move to this viewController again. As a result, this method works great the first time I load this view, but it'll remain that way until I build my file again. </p> <p>My main questions:</p> <ol> <li>What is the correct way to set <code>NSString *path = [[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"%@", area] ofType:@"plist"]; </code> using 2 variables (settings variable area and the value of the button pressed in the last view (I have a NSString for that value))?</li> <li>How do I update the *path every time the view is displayed?</li> <li>If this would be a solution, how do I unload the view whenever the 'Back' button is pressed (this would solve the issue, because viewDidLoad gets called every time a user moves to this view, right?)</li> </ol> <p>Below is the rest of my code:</p> <pre><code> - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return [keys count]; } - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{ NSString *key = [keys objectAtIndex:section]; return key; } // Customize the number of rows in the table view. - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { NSString *key = [keys objectAtIndex:section]; NSArray *nameSection = [names objectForKey:key]; return [nameSection count]; } // Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { NSUInteger section = [indexPath section]; NSUInteger row = [indexPath row]; NSString *key = [keys objectAtIndex:section]; NSArray *nameSection = [names objectForKey:key]; static NSString *SectionsTableIdentifier = @"SectionsTableIdentifier"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:SectionsTableIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:SectionsTableIdentifier] autorelease]; } cell.textLabel.text = [nameSection objectAtIndex:row]; return cell; } - (void)viewDidUnload{ self.names = nil; self.keys = nil; [super viewDidUnload]; } - (void)dealloc { [names release]; [keys release]; [super dealloc]; } </code></pre> <p>Thanks in advance!</p> <p>EDIT: Some info on what my NSLog's say:</p> <p>Whenever I press the button to load the table view, my console shows "viewWillAppear" and the <code>NSLog(@"Area is %@",area);</code> shows the correct area (Region1 in this case). </p> <p><code>NSLog(@"Path is %@",path);</code> either shows <code>(null)</code> when anything but Region1 is selected (I've only made Region1.plist so far), or iPhone Simulator/4.2/.../.../Region1.plist</p>
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