Error while connection SQLite Database ios

This is my code :

@interface DBHander : NSObject
{
sqlite3 *_database;
AppDelegate *_appDeledate;
NSString *_strDBName;
}
@end  



-(NSString *)copyDB
{
    NSArray *arrDicePath=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *strDocPath=[arrDicePath objectAtIndex:0];
    strDBPath=[strDocPath stringByAppendingPathComponent:@"data.sqlite"];
    NSLog(@"%@",strDBPath);
    NSString *strResorcePath=[[NSBundle mainBundle] pathForResource:@"data" ofType:@"sqlite"];


    if(![[NSFileManager defaultManager] fileExistsAtPath:strDBPath])
    {
        [[NSFileManager defaultManager] copyItemAtPath:strResorcePath toPath:strDBPath error:nil];
    }
    return strResorcePath;
}
-(BOOL)InsetData:(NSString *)query
{
    BOOL result=NO;
    if(sqlite3_open([_strDBName UTF8String], &_database)==SQLITE_OK)
    {
        sqlite3_stmt *complstmp;
        if(sqlite3_prepare_v2(_database, [query UTF8String], -1, &complstmp, nil)==SQLITE_OK)
        {
            sqlite3_step(complstmp);
            result=YES;
        }
        sqlite3_finalize(complstmp);
    }
    sqlite3_close(_database);
    return result;
}

Data insert successfully done, but can not retrieve my data from database!

-(NSMutableArray *)GetData:(NSString *)query
{
    NSMutableArray *arrData=[[NSMutableArray alloc] init];

    if(sqlite3_open([_strDBName UTF8String], &_database)==SQLITE_OK)
    {
        sqlite3_stmt *complstmp;
        if(sqlite3_prepare_v2(_database, [query UTF8String], -1, &complstmp, nil)==SQLITE_OK)
        {
            while (sqlite3_step(complstmp)==SQLITE_OK)
            {
                NSMutableDictionary *dictData=[[NSMutableDictionary alloc] init];

                for(int i=0;i<sqlite3_column_count(complstmp);i++)
                {
                    NSString *str;
                    if(sqlite3_column_text(complstmp, i)!=NULL)
                    {
                        str=[NSString stringWithUTF8String:(char *)sqlite3_column_text(complstmp, i)];
                    }
                    else
                    {
                        str=@"";
                    }

                    [dictData setValue:str forKey:[NSString stringWithUTF8String:(char *)sqlite3_column_name(complstmp, i)]];
                }
                [arrData addObject:dictData];
            }

        }
        sqlite3_finalize(complstmp);
    }
    sqlite3_close(_database);

    return arrData;
}

Unable to get data from database:

Data insert successfully done, but can not retrieve my data from database!

Data insert successfully done, but can not retrieve my data from database!