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POStrange behavior with NSObject Properties
 

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  1. POStrange behavior with NSObject Properties
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    <p>I have an <code>NSObject</code> that I am using to store/hold properties of an object, one of them being a "Name" property cast as an <code>NSString</code>. I am also pulling data from a SQLite DB for said object using the following:</p> <pre><code>- (void) getDataToDisplay:(NSString *)dbPath { if (sqlite3_open([dbPath UTF8String], &amp;database) == SQLITE_OK) { NSString *queryOnStyle = [NSString stringWithFormat: @"SELECT WineId, Name FROM wine WHERE StyleId = %d", dataManager.styleId]; const char *sql = [queryOnStyle UTF8String]; sqlite3_stmt *selectstmt; if(sqlite3_prepare_v2(database, sql, -1, &amp;selectstmt, NULL) == SQLITE_OK) { while(sqlite3_step(selectstmt) == SQLITE_ROW) { Wine *w = [[Wine alloc] init]; w.wineId = sqlite3_column_int(selectstmt, 0); w.wineName = [NSString stringWithUTF8String: (char *)sqlite3_column_text(selectstmt, 1)]; [dataManager.wines addObject:w]; [w release]; } } } else sqlite3_close(database); //Even though the open call failed, close the database connection to release all the memory. } </code></pre> <p>Wine being my object. If I were to log <code>w.wineName</code> at this point, there is no problem. The problem occurs later when I try to access the properties of the object from within the array, <code>dataManager.wines</code>, in a custom tableView. It suddenly treats my <code>wineName</code> as a <code>UIImageView</code> rather than an <code>NSString</code>...</p> <p>I for the life of me cannot trace anything back to ever being cast as a <code>UIImageView</code> and have no idea why it would be setting just that property as such. Here is the code for my custom tableView:</p> <pre><code>#pragma mark - #pragma mark HorizontalTableViewDelegate methods - (NSInteger)numberOfColumnsForTableView:(HorizontalTableView *)tableView { return [dataManager.wines count]; } - (UIView *)tableView:(HorizontalTableView *)aTableView viewForIndex:(NSInteger)index { UIView *vw = [aTableView dequeueColumnView]; if (!vw) { [[NSBundle mainBundle] loadNibNamed:@"ColumnView" owner:self options:nil]; vw = self.columnView; self.columnView = nil; } // Get the wineId from the array of wineId integers Wine *w = [dataManager.wines objectAtIndex:index]; int tempWineId = w.wineId; NSString *tempWineName = [NSString stringWithFormat:@"%@", w.wineName]; NSLog(@"%@", tempWineName); \\RETURNS TEMPWINENAME AS A UIIMAGEVIEW [w release]; return vw; } - (CGFloat)columnWidthForTableView:(HorizontalTableView *)tableView { //TODO: This value needs to change if changed in IB return 209.0f; } </code></pre> <p>any ideas?</p>
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    1. COis w.wineName a retain'ed property ? This sounds a bit like the string is being auto released. Could you post the definition of the Wine object ?
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    2. COWhat does your setter or property declaration for the `wineName` property look like?
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    3. COThanks a million for pointing that out. I am working in tandem with another developer and it was `@property(nonatomic,assign) NSString *wineName;` however, changing it to `@property(nonatomic,retain) NSString *wineName;` works perfectly.
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