Hi I'm problem in load UITableView using SQLite. I have this code!
DataBase Struct:
modelID integer PK autoincrement
model varchar
avaliable int
image1 blob
image2 blob
image3 blob
.H
#import <UIKit/UIKit.h>
@interface DBModel : NSObject {
NSNumber *modelID;
NSString *model;
NSNumber *avaliable;
}
@property (nonatomic, retain) NSNumbe *modelID;
@property (nonatomic, retain) NSString *model;
@property (nonatomic, retain) NSNumbe *avaliable;
-(id)initWithName:(NSString *)n modelID:(NSInteger *)mid avaliable:(NSNumber *)aval;
@end
.M
#import "DBModel.h"
@implementation DBModel
@synthesize modelID, model, avaliable;
-(id)initWithName:(NSString *)n modelID:(NSInteger *)mid avaliable:(NSInteger *)aval {
self.name = n;
self.modelID= mid;
self.avaliable= aval ;
return self;
}
@end
AppDelegate I have this function:
-(void) readModeDatabase {
sqlite3 *database;
aryModel = [[NSMutableArray alloc] init];
if(sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK) {
const char *sqlStatement = "select * from models";
sqlite3_stmt *compiledStatement;
if(sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, NULL) == SQLITE_OK) {
while(sqlite3_step(compiledStatement) == SQLITE_ROW) {
NSInteger *aModelID = sqlite3_column_int(compiledStatement, 1);
NSString *aModel = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 2)]; NSInteger *aAvaliable = sqlite3_column_int(compiledStatement, 3);
//Here I need load on image in my DBModel.
// Create a new animal object with the data from the database
DBModel *model = [[DBModel alloc] initWithName:aMode modelID:aModelID avaliable:aAvaliable];
[aryModel addObject:model];
[model release];
}
}
sqlite3_finalize(compiledStatement);
}
sqlite3_close(database);
}
Event cellForRowAtIndexPath
// Set up the cell
DBModelAppDelegate *appDelegate = (DBModelAppDelegate *)[[UIApplicati开发者_运维知识库on sharedApplication] delegate];
DBModel *models = (DBModel *)[appDelegate.aryModel objectAtIndex:indexPath.row];
cell.textLabel.text = models.model;
cell.detailTextLabel.text = [models.avaliable stringValue];
return cell;
My problem is:
I'm having problem in time to bring an integer value from the database values NSInteger to play, they always bring zero, and the database there are values for the column.
When I try to upload a UITableView using Subtitle style and playing the value of myvariable obtained from the database it adds nothing and no format, bringing a normalline.
I'd like to do the following:
According to my database structure mentioned above, I fill out a detailed UITableView,with an image, title and a caption (if possible a picture caption or stars according to the value) is all that needs to be done And to complete online by clicking the call details.
Thanks
I believe you have problem in readModeDatabase function. While reading records from database referencing of columns starts from 0 (its weird compare to storing/updating which starts from 1), above line reads 1 so from database it is reading 2nd column actually instead of first.So to read modelID from database as per your database structure you should read it like
NSInteger aModelID = sqlite3_column_int(compiledStatement, 0);
Further more to this NSInteger is just synonym to long integer and NSNumber is objective c class. So NSInteger should not have pointer as (NSInteger *). For more clarification visit http://iosdevelopertips.com/cocoa/nsnumber-and-nsinteger.html
And also correct the same at all the places in class and other places as needed.
(NSInteger *) to (NSInteger)
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