No table found in Sqlite iOS - ios

Question

i am trying to extract data from sqlite database.I added "libsqlite3.0.dylib" file and copied created sqlite DB into my app folder. I have created two method in appdelegate file. They are
//To copy DB
- (void) copyDatabaseIfNeeded {
//Using NSFileManager we can perform many file system operations.
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSString *dbPath = [self getDBPath];
BOOL success = [fileManager fileExistsAtPath:dbPath];
if(!success) {
NSLog(#"DB File %# does not exists", dbPath);
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:#"tms.sqlite"];
success = [fileManager copyItemAtPath:defaultDBPath toPath:dbPath error:&error];
NSLog(#"Successfully copied db file to path %#", dbPath);
if (!success)
NSLog(#"Failed to create writable database file with message '%#'.", [error localizedDescription]);
} else {
NSLog(#"DB File %# already exists", dbPath);
}
}
//To get DB path
-(NSString *)getDBPath{
NSArray *paths=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentDir=[paths objectAtIndex:0];
return [documentDir stringByAppendingPathComponent:#"sampleDB.sqlite"];
}
i have called copyDatabaseIfNeeded() in didFinishLaunchingWithOptions and i have added one method in ViewController.m file. That is
-(void)Display
{
SqlitAppDelegate *appDelegate=(SqlitAppDelegate *)[UIApplication sharedApplication].delegate;
NSString *dbPath=[appDelegate getDBPath];
if (sqlite3_open([dbPath UTF8String], &myDB) == SQLITE_OK)
{
NSLog(#"Database opned successflly");
const char *sql = "select * from sampleTable";
NSLog(#"%s",sql);
sqlite3_stmt *selectstmt;
if(sqlite3_prepare_v2(myDB, sql, -1, &selectstmt, NULL) == SQLITE_OK)
NSLog(#"Prepared successfully");
else
{
NSLog(#"Preparation failed");
NSLog(#"%s",sqlite3_errmsg(myDB));
NSLog(#"%d",sqlite3_errcode(myDB));
}
}
else
NSLog(#"Couldn't open database");
}
i called this method in didViewLoad method.
I get the follwing output:
2013-03-20 12:02:24.026 SqliteSample2[951:11303] Database opned successflly
2013-03-20 12:02:24.027 SqliteSample2[951:11303] select * from sampleTable
2013-03-20 12:02:24.028 SqliteSample2[951:11303] Preparation failed
2013-03-20 12:02:24.029 SqliteSample2[951:11303] no such table: sampleTable
2013-03-20 12:02:24.029 SqliteSample2[951:11303] 1
Anybody tell what i do??????
Thanks in advance...........

Answer 1

Import SqlitAppDelegate in your view controller and make Object like SqlitAppDelegate *app after #implementation ViewController
In viewDidLoad write
app= (SqlitAppDelegate *)[[UIApplication sharedApplication]delegate];
databasepath = [app getDBPath];
if(sqlite3_open([databasepath UTF8String], &dbAssessor) == SQLITE_OK)
{
NSString *sql = [NSString stringWithFormat:#"select * from SampleTable ;"];
sqlite3_stmt *selectstmt;
const char *sel_query=[sql UTF8String];
if(sqlite3_prepare(dbAssessor, sel_query, -1, &selectstmt, NULL) == SQLITE_OK)
{
while(sqlite3_step(selectstmt) == SQLITE_ROW)
{
NSLog(#"Prepared Successfully...");
}
}
sqlite3_finalize(selectstmt);
}
else
sqlite3_close(dbAssessor);
Please try this code and pass me the result. Enjoy !!!