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POLoad data from .plist to a TableView of iPhone
 

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  1. POLoad data from .plist to a TableView of iPhone
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    <p>I'm praticing example from Beginning iPhone 4 Development:Exploring the iOS SDK. In Chapter 8 it shows how to load data from a plist into a tableview. The example was done with Interface Builder. I want to do it by code but encounter problems. Nothing shows up on screen....</p> <p>Here's the .h</p> <pre><code>#import &lt;UIKit/UIKit.h&gt; @interface FifthViewController : UIViewController &lt;UITableViewDataSource, UITableViewDelegate&gt; { NSDictionary *names; NSArray *keys; } @property (nonatomic, retain) NSDictionary *names; @property (nonatomic, retain) NSArray *keys; @end </code></pre> <p>Here's .m</p> <pre><code>#import "FifthViewController.h" @implementation FifthViewController @synthesize names; @synthesize keys; - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) { // Custom initialization } return self; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; } #pragma mark - View lifecycle - (void)viewDidLoad { [super viewDidLoad]; UITableView *table = [[UITableView alloc]initWithFrame:CGRectMake(0, 0, 320, 367) style:UITableViewStyleGrouped]; [table setDataSource:self]; [table setDelegate:self]; NSString *path = [[NSBundle mainBundle] pathForResource:@"sortednames" ofType:@"plist"]; NSDictionary *dict = [[NSDictionary alloc] initWithContentsOfFile:path]; self.names = dict; [dict release]; NSArray *array = [[names allKeys] sortedArrayUsingSelector: @selector(compare:)]; self.keys = array; [self.view addSubview:table]; [table release]; } - (void)dealloc { [names release]; [keys release]; [super dealloc]; } - (void)viewDidUnload { self.names = nil; self.keys = nil; [super viewDidUnload]; } - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations return (interfaceOrientation == UIInterfaceOrientationPortrait); } #pragma mark - #pragma mark Table View Data Source Methods - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return [keys count]; } - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { NSString *key = [keys objectAtIndex:section]; NSArray *nameSection = [names objectForKey:key]; return [nameSection count]; } - (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; } - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section { NSString *key = [keys objectAtIndex:section]; return key; } - (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView { return keys; } @end </code></pre>
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. USlavitanien
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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