I'm creating a Mac app that must run on Mac OS X Tiger. For some bizarre reason, it keeps crashing. The debugger returns the following error:
0x90a594d1 <+0033> mov (%edi,%edx,4),%eax
I've tried to Google the answer, but I found nothing. What am I doing wrong?
-(IBAction)loadPage:(id)sender{
NSURL *URL = [NSURL URLWithString:#"http://www.google.com"];
[NSURLConnection connectionWithRequest:[NSURLRequest requestWithURL:URL] delegate:self];
NSLog(#"STARTED!");
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
NSLog(#"STARTED!2");
data = [[NSMutableData alloc]init];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)d{
NSLog(#"STARTED!3");
[data appendData:d];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection{
NSLog(#"STARTED!4");
NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"%#", str);
[webView loadHTMLString:str baseURL:[NSURL URLWithString:[field stringValue]]];
[str release];
[data release];
}
The solution was to retain the NSURLConnection
Related
This is my first time on this site and I am very new to coding so I was wondering if somebody could help me out.
I want to set a get request from my iphone app to my website and get the information echoed back from the website to my phone.
I have gotten this far but do not know where to go from here. Any help would be much appreciated, thanks!
- (void)myData:(id)sender
{
NSString *DataToBeSent;
sender = [sender stringByReplacingOccurrencesOfString:#"," withString:#"%20"];
[receivedData release];
receivedData = [[NSMutableData alloc] init];
DataToBeSent = [[NSString alloc] initWithFormat:#"http://194.128.xx.xxx/doCalc/getInfo.php?Data=%#",sender];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:dataToBeSent] cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData timeoutInterval:10];
[request setHTTPMethod: #"GET"];
NSError *requestError;
NSURLResponse *urlResponse = nil;
NSData *response1 = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&requestError];
[dataToBeSent release];
}
OLD WAY
- (void)myData:(id)sender
{
NSString *dataToBeSent;
sender = [sender stringByReplacingOccurrencesOfString:#"," withString:#"%20"];
[receivedData release];
receivedData= [[NSMutableData alloc] init];
dataToBeSent= [[NSString alloc] initWithFormat:#"http://194.128.xx.xxx/doCalc/getInfo.php?Data=%#",sender];
NSURLRequest *theRequest=[NSURLRequest requestWithURL:[NSURL URLWithString:dataToBeSent]];
Theconn= [[NSURLConnection alloc]initWithRequest:theRequest delegate:self];
NSLog (#"test1 %#", theRequest);
NSLog (#"test2 %#", Theconn);
[dataToBeSent release];
}
Then the following methods are called and I get my data BUT if I sent another request after my first one but different data on the same connection, it would always give me the same result which shouldn't happen
- (void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
/* appends the new data to the received data */
[receivedData appendData:data];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)conn
{
NSString *stringData= [[NSString alloc]
initWithData:receivedData encoding:NSUTF8StringEncoding];
NSLog(#"Got data? %#", stringData);
[self displayAlertCode:stringData];
[stringData release];
// Do unbelievably cool stuff here //
}
Assuming your data loaded properly you can convert the data into a string and do whatever you want with it.
NSData *response1 = [NSURLConnection sendSynchronousRequest:request returningResponse:&urlResponse error:&requestError];
//Make sure to set the correct encoding
NSString* responseString = [[NSString alloc] initWithData:response1 encoding:NSASCIIStringEncoding];
If your server returns JSON there are 3rd party libraries that can parse the string into collections like NSArray and NSDictionary. If your server returns XML then NSXMLParser could be something you can use.
EDIT
I've changed your code to manage the memory a little differently.
.h
#property (nonatomic,retain) NSMutableData * receivedData;
#property (nonatomic,retain) NSURLConnection * Theconn;
.m
#synthesize receivedData;
#synthesize Theconn;
//A bunch of cool stuff
- (void)myData:(id)sender
{
//If you already have a connection running stop the existing one
if(self.Theconn != nil){
[self.Theconn cancel];
}
sender = [sender stringByReplacingOccurrencesOfString:#"," withString:#"%20"];
//This will release your old receivedData and give you a new one
self.receivedData = [[[NSMutableData alloc] init] autorelease];
NSString *dataToBeSent = [NSString stringWithFormat:#"http://194.128.xx.xxx/doCalc/getInfo.php? Data=%#",sender];
NSURLRequest *theRequest= [NSURLRequest requestWithURL:[NSURL URLWithString:dataToBeSent]];
//This will release your old NSURLConnection and give you a new one
self.Theconn = [NSURLConnection connectionWithRequest:theRequest delegate:self];
NSLog (#"test1 %#", theRequest);
NSLog (#"test2 %#", Theconn);
}
//...
//Your delegate methods
//...
- (void) dealloc{
[receivedData release];
[Theconn release];
[super dealloc];
}
I am developing view based application.I have login page when we click on Login button it should check entered values with webserver values and it should display vali or invalid.I have wriiten code in this way it is executing successfully i am getting the result in this way
<!DOCTYPE html PUbLIC" -//W3C//DTD XHTML 1.0 Strict....
What i need to change in below code to comapre with server values..can any one help me regarding this please...
-(IBAction)buttonClick:(id)sender
{
NSString* username = nameInput.text;
NSString* pass = passInput.text;
if([nameInput.text isEqualToString:#"" ]|| [passInput.text isEqualToString:#""])
{
greeting.text = #"Input Your Value";
[nameInput resignFirstResponder];
[passInput resignFirstResponder];
return;
}
NSString *post =
[[NSString alloc] initWithFormat:#"uname=%#&pwd=%#",username,pass];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d", [postData length]];
NSURL *url = [NSURL URLWithString:#"https://108.16.210.28/Account/LogOn"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
[theRequest setHTTPMethod:#"POST"];
[theRequest setValue:postLength forHTTPHeaderField:#"Content-Length"];
[theRequest setHTTPBody:postData];
[NSURLRequest setAllowsAnyHTTPSCertificate:YES forHost:[url host]];
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if( theConnection )
{
webData = [[NSMutableData data] retain];
}
else
{
}
[nameInput resignFirstResponder];
[passInput resignFirstResponder];
nameInput.text = nil;
passInput.text = nil;
}
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
[webData setLength: 0];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[webData appendData:data];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
[connection release];
[webData release];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSString *loginStatus = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding];
NSLog(loginStatus);
greeting.text = loginStatus;
[loginStatus release];
[connection release];
[webData release];
}
- (void)dealloc {
[super dealloc];
}
#end
Use statusCode to see the login state.
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{
if([response isKindOfClass:[NSHTTPURLResponse class]])
{
NSHTTPURLResponse *theResponse = (NSHTTPURLResponse*)response;
NSInteger theStatusCode = [theResponse statusCode];
}
}
you have to parse the data.If it is in the form of XML data then you have to parse the element (like valid) in the didfoundcharacters.If it is valid then make a variable like BOOL confirm = NO;Modify this in the didfoundcharacters.if (confirm) then give access further
I am developing Viewbased application.I have method look like this.-(IBAction)switchPage:(id)sender this method is button click event action. Now when we click on button it should load under view did load data but it is not loading can any one help regarding this
-(IBAction)switchPage:(id)sender
{
if(self.viewTwoController == nil)
{
ViewTwoController *viewTwo = [[ViewTwoController alloc]
initWithNibName:#"View2" bundle:[NSBundle mainBundle]];
self.viewTwoController = viewTwo;
[viewTwo release];
}
[self.navigationController pushViewController:self.viewTwoController animated:YES];
[connection release];
}
//in viw did load i have this code
- (void)viewDidLoad {
[super viewDidLoad];
responseData = [[NSMutableData data] retain];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:#"http://108.16.210.28/Account/LogOn"]];
[[NSURLConnection alloc] initWithRequest:request delegate:self];
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
[responseData setLength:0];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
[responseData appendData:data];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
// label.text = [NSString stringWithFormat:#"Connection failed: %#", [error description]];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
[connection release];
NSString *post =[[NSString alloc] initWithFormat:#"usernameField=%#&passwordField=%#",usernameField.text,passwordField.text];
NSURL *url=[NSURL URLWithString:#"https://108.16.210.28/SSLLogin/Account/LogOn"];
NSLog(post);
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d", [postData length]];
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:url];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:postData];
/* when we user https, we need to allow any HTTPS cerificates, so add the one line code,to tell teh NSURLRequest to accept any https certificate, i'm not sure about the security aspects
*/
[NSURLRequest setAllowsAnyHTTPSCertificate:YES forHost:[url host]];
NSError *error;
NSURLResponse *response;
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSString *data=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
NSLog(#"%#",data);
}
enter code here
As an optimization, NSViewControllers don't load their views until the last moment, i.e. when the view is actually accessed. So to load your view immediately just call [viewTwoController view] after its initialization and nib will be loaded, and your viewDidLoad method will be called.
Edit: Your code would look like this:
-(IBAction)switchPage:(id)sender {
if(self.viewTwoController == nil) {
ViewTwoController *viewTwo = [[ViewTwoController alloc]
initWithNibName:#"View2" bundle:[NSBundle mainBundle]];
self.viewTwoController = viewTwo;
[viewTwo release];
[viewTwo view] // calls loadView, loads the nib then calls viewDidLoad
}
[self.navigationController pushViewController:self.viewTwoController animated:YES];
[connection release];
}
I have a tableview, when the user selects a row i call a webservice depending on which row is selected.
my problem is i can connect to the webservice but i dont get any response from the webservice. I used soap client to test if webservice is working correctly or not.
//rootviewcontroller.m
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {....
//call to webservice
[self connectToWebService];
}
On debugging i found that my code does not go to any of the following methods
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *) response{}
-(void) connection:(NSURLConnection *) connection didReceiveData:(NSData *) data {}
-(void) connection:(NSURLConnection *) connection didFailWithError:(NSError *) error{}
-(void) connectionDidFinishLoading:(NSURLConnection *) connection {}
any suggestions where am i going wrong???
thanks
-(void)connectToWebService
{
NSString *soapMsg = [NSString stringWithFormat:
#"<?xml version=\"1.0\" encoding=\"utf-8\"?>"
"<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">"
"<soap:Body>"
" <GetCount xmlns=\"http://192.168.1.104/Service1\">"
"<PropId>718</PropId>"
"</GetCount>"
"</soap:Body>"
"</soap:Envelope>"];
NSURL *url = [NSURL URLWithString:
#"http://192.168.1.104/defpath/service1.asmx"];
NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url];
//---set the headers---
NSString *msgLength = [NSString stringWithFormat:#"%d",[soapMsg length]];
[req addValue:#"text/xml; charset=utf-8"
forHTTPHeaderField:#"Content-Type"];
[req addValue:#"http://192.168.1.104/defpath/Service1/GetCount"
forHTTPHeaderField:#"SOAPAction"];
[req addValue:msgLength forHTTPHeaderField:#"Content-Length"];
//---set the HTTP method and body---
[req setHTTPMethod:#"POST"];
[req setHTTPBody: [soapMsg dataUsingEncoding:NSUTF8StringEncoding]];
conn = [[NSURLConnection alloc] initWithRequest:req delegate:self];
if (conn) {
webData = [[NSMutableData data] retain];
}
i do not know if your problem is solved :
you can get the answer like that :
-(void) connection:(NSURLConnection *) connection //Recive response
didReceiveResponse:(NSURLResponse *) response {
[webData setLength: 0];
}
-(void) connection:(NSURLConnection *) connection //Repeative call method and append data to webData
didReceiveData:(NSData *) data {
[webData appendData:data];
}
-(void) connection:(NSURLConnection *) connection//If error occure error should be displayed
didFailWithError:(NSError *) error {
NSLog(#"Problème de connexion au service web appelé");
[webData release];
[connection release];
}
-(void) connectionDidFinishLoading:(NSURLConnection *) connection {
NSLog(#"OK. Bytes reçues: %d", [webData length]);
NSString *theXML = [[NSString alloc]
initWithBytes: [webData mutableBytes]
length:[webData length]
encoding:NSUTF8StringEncoding];
//---shows the XML---
NSLog(theXML);
[theXML release];
}
I would like to know how to do the next:
I have one app that make some connections to receive data (this data is shown in the screen)
I would like to know which code I can use to wait each connection, I mean, the time between the connection start and this finish I would like to show in the screen one spin (Loading...).
I have created the connections, and the spin. My problem is that I don't know which code I can use to manage this and where to write this code.
You should look at using NSURLConnection with a delegate. An NSURLConnection lets you get data from a server asynchronously (it runs in the background, and notifies the delegate when certain events happen).
Then, in your view controller class, you can start the spinner right before you launch the connection, and have one of your delegate methods stop the spinner when the connection finishes.
this is my code in the class: Connection.h, and i create an object Connection in every class where i want to call a new connection to get data (i don't know then if this is the correct way to do)
import "Connection.h"
import "XMLParser.h"
#implementation Connection
#synthesize webData, soapResults, xmlParser;
-(Connection *) Init:(NSInteger *) methodNumber{
[super init];
methodNum = methodNumber;
return self;
}
-(void)Connect:(NSString *) soapMessage{
NSLog(soapMessage);
NSURL *url = [NSURL URLWithString:#"http://.....?WSDL"];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];
NSString *msgLength = [NSString stringWithFormat:#"%d", [soapMessage length]];
[theRequest addValue: #"text/xml; charset=utf-8" forHTTPHeaderField:#"Content-Type"];
[theRequest addValue: msgLength forHTTPHeaderField:#"Content-Length"];
[theRequest setHTTPMethod:#"POST"];
[theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
//NSURLConnection *theConnection = [NSURLConnection connectionWithRequest:theRequest delegate:self];
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
[theConnection start];
if( theConnection )
{
webData = [[NSMutableData data] retain];
}
else
{
NSLog(#"theConnection is NULL");
}
}
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
[webData setLength: 0];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
[webData appendData:data];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
NSLog(#"ERROR with theConenction");
[connection release];
[webData release];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
NSLog(#"DONE. Received Bytes: %d", [webData length]);
NSString *theXML = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding];
NSLog(theXML);
[theXML release];
if( xmlParser )
{
[xmlParser release];
}
xmlParser = [[NSXMLParser alloc] initWithData: webData];
//Initialize the delegate.
XMLParser *parser = [[XMLParser alloc] initXMLParser:methodNum];
//Set delegate
[xmlParser setDelegate:parser];
//[xmlParser setDelegate: self];
[xmlParser setShouldResolveExternalEntities: YES];
[xmlParser parse];
[connection release];
[webData release];
}
#end