In my SQLite database only one row effect but I want effect 4 rows at a time. My code is working for one row, not for other value save. How to write the code for saving multiple rows in SQLite?
I create application for weather. I get all weather condition information by XML parsing, I parse all value in table view I see all value. This is all proper.
In XML file I get current condition element and three forecast condition it mean current condition it show today weather condition and forecast condition show next 3 days of weather conditions. I create for fetch this data .3class with name currentcondition and forecastcondition.
In forecastcondition element I have same name of next 3day element name means element name same forecastcondition I store all forecast condition value in array for take value one by one of next 3day value show it working proper in table cell. I see current condition value on 1cell and all next 3forecastcondition display in next 3cell my code is proper working but now I want store first cell value and next 3day value cell in sqlite database table at a time but how can I store?
But I save currentcondition in SQLite because I create object of currentcondition class then I pass value to SQLite. So how to parse another cell value at same time? My table is one and which I give all column name in attach file; I want insert value in this table column only.
I write this code for store SQLite please check the code. This my controller class where I display value on cell here only I wrirten code for SQLite for save data.
//
// TWeatherController.m
// Journey
//
// Created by pradeep.yadav on 5/3/11.
// Copyright 2011 __MyCompanyName__. All rights reserved.
//
#import "TWeatherController.h"
#import "TWeatherCell.h"
#import "ForecastInfoParser.h"
#import "global.h"
#define DATABASE_NAME @"test.sqlite"
#define DATABASE_TITLE @"test"
#import <sqlite3.h>
@implementation TWeatherController
@synthesize MyTableView;
@synthesize forecastcond;
#pragma mark -
#pragma mark View lifecycle
- (NSString *) getWritableDBPath {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
return [documentsDir stringByAppendingPathComponent:DATABASE_NAME];
}
-(void)createEditableCopyOfDatabaseIfNeeded
{
// Testing for existence
BOOL success;
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,
NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *writableDBPath = [documentsDirectory stringByAppendingPathComponent:DATABASE_NAME];
NSLog(@"%@",writableDBPath);
success = [fileManager fileExistsAtPath:writableDBPath];
if (success)
return;
// The writable database does not exist, so copy the default to
// the appropriate location.
NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath]
stringByAppendingPathComponent:DATABASE_NAME];
success = [fileManager copyItemAtPath:defaultDBPath
toPath:writableDBPath
error:&error];
if(!success)
{
NSAssert1(0,@"Failed to create writable database file with Message : '%@'.",
[error localizedDescription]);
}
}
-(BOOL) insertData
{
[self createEditableCopyOfDatabaseIfNeeded];
//NSString *filePath = [self getWritableDBPath];
BOOL value = NO;
@try {
sqlite3 *database;
if (sqlite3_open([[self getWritableDBPath] UTF8String], &database) != SQLITE_OK)
{
sqlite3_close(database);
}
else {
NSString *nsQuery = [[NSString alloc] initWithFormat:@"INSERT INTO weather (ReportDate,conditionname,humidity,maxtemp,mintemp,wind) VALUES('%@','%@','%@','%@','%@','%@')" ,_forecastInfo.CurrentDateTime,currentcond.Condition,currentcond.Tempf,currentcond.Tempf,currentcond.WindCondition,currentcond.Humidity];
const char *query = [nsQuery UTF8String];
[nsQuery release];
sqlite3_stmt *statement;
int errorCode = sqlite3_prepare_v2(database, query, -1, &statement, NULL);
if(errorCode == SQLITE_OK) {
int result = sqlite3_step(statement);
if(result == SQLITE_DONE) {
value = YES;
sqlite3_finalize(statement);
}
}
sqlite3_close(database);
}
}
@catch (NSException *exception) {
NSLog(@"Error encountered while reading facts: %@", [exception reason]);
}
return value;
}
- (void)viewDidLoad {
[super viewDidLoad];
_forecastInfo=nil;
currentcond=nil;
forecastcond=nil;
NSString *URL=@"http://www.google.com/ig/api?weather=,,,50500000,30500000";
NSURLRequest *theRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:URL]];
NSURLResponse *resp = nil;
NSError *err = nil;
NSData *response = [NSURLConnection sendSynchronousRequest: theRequest returningResponse: &resp error: &err];
NSString * theString = [[NSString alloc] initWithData:response encoding:NSUTF8StringEncoding];
//[resp release];
[err release];
NSLog(@"response: %@", theString);
ForecastInfoParser *parser=[[ForecastInfoParser alloc]init];
parser.delegate=self;
[parser parseData:response];
//[self selected];
[self insertData];
}
-(void)forecastInfoParser:(ForecastInfoParser*)parser parsed:(ForecastInformation*)forecastInfo
{
_forecastInfo=[forecastInfo retain];
[MyTableView reloadData];
}
-(void)forecastInfo:(ForecastInfoParser*)parser parsed:(CurrentCondition*)currentcondition
{
currentcond=[currentcondition retain];
[MyTableView reloadData];
}
-(void)forecastInfoCondition:(ForecastInfoParser*)parser parsed:(NSMutableArray *)forecastcondition
{
forecastcond=[forecastcondition retain];
[MyTableView reloadData];
}
#pragma mark -
#pragma mark Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if(_forecastInfo&¤tcond&&forecastcond)
return 4;
return 0;
}
// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
TWeatherCell *cell =(TWeatherCell *) [MyTableView dequeueReusableCellWithIdentifier:[NSString stringWithFormat:@"cell_%d", indexPath.row]];
if (cell == nil) {
//cell = [[[TWeatherCell alloc] initWithStyle:UITableViewStyleGrouped reuseIdentifier:CellIdentifier] autorelease];
cell = [[[TWeatherCell alloc] initWithFrame:CGRectZero reuseIdentifier:[NSString stringWithFormat:@"cell_%d", indexPath.row]] autorelease];
}
//ForecastCondition *cond=[forecastcond objectAtIndex:0];
cond1=[forecastcond objectAtIndex:1];
cond2=[forecastcond objectAtIndex:2];
cond3=[forecastcond objectAtIndex:3];
if ([currentcond.Icon isEqualToString:@"http://\n"])
{
cell.weatherimage.image = [UIImage imageNamed:@"listIcon-H.png"];
}
else {
NSData *imageData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:currentcond.Icon]];
NSLog(@"this is image from server:%@",imageData);
cell.weatherimage.image = [UIImage imageWithData:imageData];
[imageData release];
}
NSDate *today = [NSDate date];
NSDateFormatter *date_formatter=[[NSDateFormatter alloc]init];
NSString *str=NSLocalizedString(@"date",nil);
[date_formatter setDateFormat:str];
NSTimeInterval secondsPerDay = 24 * 60 * 60;
//NSDate *today = [NSDate date];
NSDate *thursday = [NSDate dateWithTimeInterval:secondsPerDay sinceDate:today];
NSDate *friday = [NSDate dateWithTimeInterval:2*secondsPerDay sinceDate:today];
NSDate *sunday = [NSDate dateWithTimeInterval:3*secondsPerDay sinceDate:today];
//tomorrow = [today addTimeInterval:secondsPerDay];
switch (indexPath.row) {
case 0:
NSLog(@"%d",indexPath.row);
NSData *imageData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:currentcond.Icon]];
NSLog(@"this is image from server:%@",imageData);
cell.weatherimage.image = [UIImage imageNamed:photo];
[imageData release];
file://localhost/Users/pradeepyadav/Desktop/JourneyMapper/Journey/Classes/TJourneyTabBar.hcell.weatherimage.image = [UIImage imageNamed:photo];
cell.reportdate.text = _forecastInfo.CurrentDateTime;
//cell.conditionname.text = currentcond.Condition;
[cell setConditionName:currentcond.Condition];
//[cell setConditionName:cond1.Condition];
cell.twotemp.text = [NSString stringWithFormat:@"Temp:%@/%@",currentcond.Tempf,currentcond.Tempc];
cell.twodirection.text = currentcond.WindCondition;
cell.humidity.text = currentcond.Humidity;
break;
case 1:
NSLog(@"%d",indexPath.row);
cell.weatherimage.image = [UIImage imageNamed:photo];
cell.reportdate.text =[NSString stringWithFormat:@"%@",thursday];
//cell.conditionname.text = cond1.Condition;
[cell setConditionName:cond1.Condition];
cell.twotemp.text = [NSString stringWithFormat:@"Temp:%@/%@",cond1.Low,cond1.High];
break;
case 2:
NSLog(@"%d",indexPath.row);
cell.weatherimage.image = [UIImage imageNamed:photo];
cell.reportdate.text = [NSString stringWithFormat:@"%@",friday];
//cell.conditionname.text = cond2.Condition;
[cell setConditionName:cond2.Condition];
cell.twotemp.text = [NSString stringWithFormat:@"Temp:%@/%@",cond2.Low,cond2.High];
break;
case 3:
NSLog(@"%d",indexPath.row);
cell.weatherimage.image = [UIImage imageNamed:photo];
cell.reportdate.text = [NSString stringWithFormat:@"%@",sunday];
//cell.conditionname.text = cond3.Condition;
[cell setConditionName:cond3.Condition];
cell.twotemp.text = [NSString stringWithFormat:@"Temp:%@/%@",cond3.Low,cond3.High];
break;
default:
NSLog(@"Out of Range ",indexPath.row);
break;
}
return cell;
}
#pragma mark -
#pragma mark Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
[tableView deselectRowAtIndexPath:indexPath animated:YES];
// Navigation logic may go here. Create and push another view controller.
/*
<#DetailViewController#> *detailViewController = [[<#DetailViewController#> alloc] initWithNibName:@"<#Nib name#>" bundle:nil];
// ...
// Pass the selected object to the new view controller.
[self.navigationController pushViewController:detailViewController animated:YES];
[detailViewController release];
*/
}
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *) indexPath
{
return 100.0;
}
#pragma mark -
#pragma mark Memory management
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Relinquish ownership any cached data, images, etc. that aren't in use.
}
- (void)viewDidUnload {
// Relinquish ownership of anything that can be recreated in viewDidLoad or on demand.
// For example: self.myOutlet = nil;
}
- (void)dealloc {
[super dealloc];
[_forecastInfo release];
[currentcond release];
[forecastConditions release];
}
@end
I believe what your asking is “how can I update 4 rows in one SQL command?”
The easiest way to do this is to use “;” to break up the sql statement to form 4 different queries executed in one string
Your main SQL string appears to be in the NSString nsQuery, here is a way you could set it although its a little tedious