I have an application which has been running happily, but since I updated to OS3.1 and updated the SDK the application is failing to log onto a remote server, passing a connection string to the stringWithContentsOfUrl function.
Before the update this was working fine, and if I copy the text string which is displayed on the NSLog statement and paste that into a browser, then I get the correct response, however, this is replying with "LOGIN_ERROR" indicating failure.
Any idea why this is now failing and how to fix it?
NSString* userName = [[NSUserDefaults standardUserDefaults] stringForKey:#"username_pref"];
NSString* password = [[NSUserDefaults standardUserDefaults] stringForKey:#"password_pref"];
NSString* loginUrl = [NSString stringWithFormat:#"https://website.com/API/login?email=%#&password=%#", userName, password];
NSLog (#"Logging in as %# using %# at [%#]", userName, password, loginUrl);
NSURL* url = [NSURL URLWithString:loginUrl];
NSString* loginDetails = [NSString stringWithContentsOfURL:url encoding:NSASCIIStringEncoding error:nil];
if ([loginDetails compare:#"\"LOGIN_ERROR\""] == NSOrderedSame)
{
DLog (#"Login Failed : LOGIN_ERROR");
self.isLoggedIn = NO;
}
else
{
DLog (#"Login Success");
if (userDetails) {
[userDetails release];
}
NSDictionary* jsonData = [loginDetails JSONValue];
userDetails = [[[DMUserDetails alloc] init] retain];
userDetails.id = [[jsonData objectForKey:#"id"] intValue];
userDetails.api_token = [jsonData objectForKey:#"api_token"];
userDetails.full_name = [jsonData objectForKey:#"full_name"];
userDetails.mobile_number = [jsonData objectForKey:#"mobile_number"];
userDetails.mobile_host = [jsonData objectForKey:#"mobile_host"];
userDetails.email = [jsonData objectForKey:#"email"];
userDetails.twitter = [jsonData objectForKey:#"twitter"];
userDetails.jabber = [jsonData objectForKey:#"jabber"];
userDetails.msn = [jsonData objectForKey:#"msn"];
userDetails.start_page = [jsonData objectForKey:#"start_page"];
userDetails.date_format = [[jsonData objectForKey:#"date_format"] intValue];
userDetails.time_format = [[jsonData objectForKey:#"time_format"] intValue];
userDetails.sort_order = [[jsonData objectForKey:#"sort_order"] intValue];
userDetails.timezone = [jsonData objectForKey:#"timezone"];
userDetails.tz_offset = [jsonData objectForKey:#"tz_offset"];
userDetails.premium_until = [jsonData objectForKey:#"premium_until"];
userDetails.default_reminder = [jsonData objectForKey:#"default_reminder"];
self.isLoggedIn = YES;
}
[self performSelectorOnMainThread:#selector(didFinishLogon) withObject:nil waitUntilDone:NO];
If your user name is an e-mail address and has an at sign (#) in it, have you tried to escape the at sign in the URL by using %40 instead of #?
The most likely problem is that loginDetails is nil, indicating an error retrieving the URL, rather than you actually receiving a "LOGIN ERROR" response.
Pass in an error object and log the error.
Try:
NSError *error = nil;
NSString *loginDetails = [NSString stringWithContentsOfURL:url encoding:NSASCIIStringEncoding error:&error];
if (error != nil) {
NSLog(#"%#", error);
}
Related
I added some events to the calendar and save their eventIdentifier to file. When i want to remove all my events i read the eventIdentifier from that file to an array and remove each event with its event id. Here is the code to add event to calendar and save their event id to file:
- (void) addEventToCalendar: (id)object
{
#autoreleasepool {
int i = 0;
NSString *string_to_file = #"";
eventStore=[[EKEventStore alloc] init];
for(Schedule *sche in scheduleArray){
EKEvent *addEvent=[EKEvent eventWithEventStore:eventStore];
addEvent.title=sche.course_Name;
addEvent.startDate = [self stringToDate:sche.from_Date];
addEvent.endDate = [self stringToDate:sche.thru_Date];
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
[addEvent setCalendar:[eventStore defaultCalendarForNewEvents]];
NSDate *date_alarm = [addEvent.startDate dateByAddingTimeInterval:-(10*60)];
addEvent.alarms=[NSArray arrayWithObject:[EKAlarm alarmWithAbsoluteDate:date_alarm]];
NSError *err;
// do save event to calendar
[eventStore saveEvent:addEvent span:EKSpanThisEvent error:&err];
if (err == nil) {
NSString* str = [[NSString alloc] initWithFormat:#"%#", addEvent.eventIdentifier];
string_to_file = [string_to_file stringByAppendingString:str];
string_to_file = [string_to_file stringByAppendingString:#"\n"];
NSLog(#"String %d: %#",i, str);
}
else {
NSLog(#"Error %#",err);
}
i++;
}
// create file to save
[[NSFileManager defaultManager] createFileAtPath:filePath contents:nil attributes:nil];
inFile = [NSFileHandle fileHandleForWritingAtPath: filePath];
NSData *data = [string_to_file dataUsingEncoding:NSUTF16StringEncoding];
[inFile writeData:data];
}
}
And the code below to remove all events i have added to calendar
- (void) deleteEventInCalender {
filemgr = [NSFileManager defaultManager];
NSString *filePath = [self getFilePath:#"saveeventid.txt"];
NSFileHandle *inFile;
inFile = [NSFileHandle fileHandleForReadingAtPath:filePath];
NSData *dataFile;
dataFile = [inFile readDataToEndOfFile];
NSString *tmp = #"";
NSString *temp = #"";
tmp = [NSString stringWithCharacters:[dataFile bytes] length:[dataFile length]/sizeof(unichar)];
if(![tmp isEqualToString:#""]){
tmp = [tmp substringFromIndex:1];
event_idArray = [[NSMutableArray alloc] init];
int j = 0;
while (![tmp isEqualToString:#""]){
int index_find_string = [tmp rangeOfString:#"\n"].location;
temp = [tmp substringWithRange:NSMakeRange(0, index_find_string)];
[event_idArray addObject:temp];
tmp = [tmp substringFromIndex:index_find_string + 1];
}
EKEventStore* store = [[EKEventStore alloc] init];
j = 0;
for(NSString *eventid in event_idArray){
EKEvent* event2 = [store eventWithIdentifier:eventid];
if (event2 != nil) {
NSLog(#"log: %d log id: %#", j, eventid);
NSError* error = nil;
// remove event
[store removeEvent:event2 span:EKSpanThisEvent error:&error];
}
j++;
}
[filemgr removeItemAtPath:filePath error:nil];
}
}
All codes above work well when i test on the iOS simulator with calendar.sqlitedb. But it makes some strange errors when i run on iPad device 5.0. That is sometime the calendar not remove event or when all events has been remove then after some minutes all events appear again... I don't understand, i don't know why and i very confuse. Does anyone has the same issue with me? Please share your solution!
Added another question: where the calendar database stored in the iOS 5.0 device.
App crashes when trying to update an UILabel with a NSString.
Showing the same NSString on console works.
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
if (self.connectionData)
{
NSError *error;
self.dict = [NSJSONSerialization JSONObjectWithData:self.connectionData options:kNilOptions error:&error];
self.matchesArray = self.dict[#"matches"];
NSString *title = [self.matchesArray valueForKey:#"title"];
NSLog(#"NSString TITLE contains: %#", title);
self.titleLabel.text = title;
}
}
CONSOLE OUTPUT:
2013-01-16 13:54:08.550 ZEITreisen[3168:c07] NSString TITLE contains: (
"Mark und Dollar"
)
2013-01-16 13:54:08.552 ZEITreisen[3168:c07] -[__NSArrayI isEqualToString:]: unrecognized selector sent to instance 0xde93850
(lldb)
title is not NSString, it is NSArray
so
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
if (self.connectionData)
{
NSError *error;
self.dict = [NSJSONSerialization JSONObjectWithData:self.connectionData options:kNilOptions error:&error];
self.matchesArray = self.dict[#"matches"];
NSArray *title = [self.matchesArray valueForKey:#"title"];
NSLog(#"NSString TITLE contains: %#", title);
self.titleLabel.text = [title lastObject];
}
}
Try :
-(void)connectionDidFinishLoading:(NSURLConnection *)connection
{
if (self.connectionData)
{
NSError *error;
self.dict = [NSJSONSerialization JSONObjectWithData:self.connectionData options:kNilOptions error:&error];
self.matchesArray = self.dict[#"matches"];
NSString *title = [self.matchesArray valueForKey:#"title"];
NSLog(#"NSString TITLE contains: %#", title);
self.titleLabel.text = [NSString stringWithFormat:#"%#",[title objectAtIndex:0]];
}
}
maybe the values you stored in self.matchesArray is not a string
I need to extract a variable's value from a string, which happens to be a URL. The string/url is loaded as part of a separate php query, not the url in the browser.
The url's will look like:
http://gmail.com?access_token=ab8w4azq2xv3dr4ab37vvzmh&token_type=bearer&expires_in=3600
How can I capture the value of the access_token which in this example is ab8w4azq2xv3dr4ab37vvzmh?
This code should do it:
- (NSString *)extractToken:(NSURL *)URL
{
NSString *urlString = [URL absoluteString];
NSRange start = [urlString rangeOfString:#"access_token="];
if (start.location != NSNotFound)
{
NSString *token = [urlString substringFromIndex:start.location+start.length];
NSRange end = [token rangeOfString:#"&"];
if (end.location != NSNotFound)
{
//trim off other parameters
token = [token substringToIndex:end.location];
}
return token;
}
//not found
return nil;
}
Alternatively, here is a more general solution that will extract all the query parameters into a dictionary:
- (NSDictionary *)URLQueryParameters:(NSURL *)URL
{
NSString *queryString = [URL query];
NSMutableDictionary *result = [NSMutableDictionary dictionary];
NSArray *parameters = [queryString componentsSeparatedByString:#"&"];
for (NSString *parameter in parameters)
{
NSArray *parts = [parameter componentsSeparatedByString:#"="];
NSString *key = [[parts objectAtIndex:0] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
if ([parts count] > 1)
{
id value = [[parts objectAtIndex:1] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
[result setObject:value forKey:key];
}
}
return result;
}
Good Category for NSDictionary:
#import "NSDictionary+URL.h"
#implementation NSDictionary (URL)
+ (NSDictionary *)dictionaryWithUrlString:(NSString *)urlString{
NSRange urlRange = [urlString rangeOfString:#"?"];
if(urlRange.length>0){
urlString = [urlString substringFromIndex:urlRange.length+urlRange.location];
}
NSArray *pairsArray = [urlString componentsSeparatedByString:#"&"];
NSMutableDictionary *parametersDictionary = [[NSMutableDictionary alloc] initWithCapacity:[pairsArray count]];
for(NSString *pairString in pairsArray){
NSArray *valuesArray = [pairString componentsSeparatedByString:#"="];
if([valuesArray count]==2){
[parametersDictionary setValue:[valuesArray objectAtIndex:1] forKey:[valuesArray objectAtIndex:0]];
}
}
return [parametersDictionary autorelease];
}
#end
NSMutableDictionary *querycomponent = [[NSMutableDictionary alloc] init];
if (![query isEqualToString:#""]){
NSArray *queryArray = [query componentsSeparatedByString:#"&"];
for (NSString *subquery in queryArray){
NSArray *subqueryArray = [subquery componentsSeparatedByString:#"="];
NSString *key = [subqueryArray objectAtIndex:0];
NSString *val = [subqueryArray objectAtIndex:1];
[querycomponent setObject:val forKey:key];
}
NSLog(#"querycomponent %#",querycomponent);
}
How can I parse a mailto request ?
'mailto:someone#example.com?cc=someone_else#example.com&subject=This%20is%20the%20subject&body=This%20is%20the%20body'
From this NSURL, I want to extract the recipient, the subject and the body. How should I do ?
Thanks
Here is some code that will parse any URL and return a dictionary with the parameters and the associated objects in a dictionary. It works for mailto URLs, too.
Please note: This code assumes you're using ARC!
#interface NSString (URLDecoding)
- (NSString *) URLDecodedString;
#end
#implementation NSString (URLDecoding)
- (NSString *) URLDecodedString {
NSString *result = (__bridge_transfer NSString *)CFURLCreateStringByReplacingPercentEscapesUsingEncoding(kCFAllocatorDefault, (__bridge CFStringRef)self, CFSTR(""), kCFStringEncodingUTF8);
return result;
}
#end
- (NSDictionary *) parameterDictionaryFromURL:(NSURL *)url {
NSMutableDictionary *parameterDictionary = [[NSMutableDictionary alloc] init];
if ([[url scheme] isEqualToString:#"mailto"]) {
NSString *mailtoParameterString = [[url absoluteString] substringFromIndex:[#"mailto:" length]];
NSUInteger questionMarkLocation = [mailtoParameterString rangeOfString:#"?"].location;
[parameterDictionary setObject:[mailtoParameterString substringToIndex:questionMarkLocation] forKey:#"recipient"];
if (questionMarkLocation != NSNotFound) {
NSString *parameterString = [mailtoParameterString substringFromIndex:questionMarkLocation + 1];
NSArray *keyValuePairs = [parameterString componentsSeparatedByString:#"&"];
for (NSString *queryString in keyValuePairs) {
NSArray *keyValuePair = [queryString componentsSeparatedByString:#"="];
if (keyValuePair.count == 2)
[parameterDictionary setObject:[[keyValuePair objectAtIndex:1] URLDecodedString] forKey:[[keyValuePair objectAtIndex:0] URLDecodedString]];
}
}
}
else {
NSString *parameterString = [url parameterString];
NSArray *keyValuePairs = [parameterString componentsSeparatedByString:#"&"];
for (NSString *queryString in keyValuePairs) {
NSArray *keyValuePair = [queryString componentsSeparatedByString:#"="];
if (keyValuePair.count == 2)
[parameterDictionary setObject:[[keyValuePair objectAtIndex:1] URLDecodedString] forKey:[[keyValuePair objectAtIndex:0] URLDecodedString]];
}
}
return [parameterDictionary copy];
}
And here is how you use it:
NSURL *mailtoURL = [NSURL URLWithString:#"mailto:foo#example.com?cc=bar#example.com&subject=Greetings%20from%20Cupertino!&body=Wish%20you%20were%20here!"];
NSDictionary *parameterDictionary = [self parameterDictionaryFromURL:mailtoURL];
NSString *recipient = [parameterDictionary objectForKey:#"recipient"];
NSString *subject = [parameterDictionary objectForKey:#"subject"];
NSString *body = [parameterDictionary objectForKey:#"body"];
EDIT:
I updated the code to work with any URL and recipients are now in the dictionary for mailto URLs.
I would pull the email from that like this:
NSString * mailToString = #"'mailto:someone#example.com?cc=someone_else#example.com&subject=This%20is%20the%20subject&body=This%20is%20the%20body'";
NSArray *tempArray = [mailToString componentsSeparatedByString:#"?"];
//get email address from array
NSString * emailString = [[tempArray objectAtIndex:0]description];
//clean up string
emailString = [emailString stringByReplacingOccurrencesOfString:#"'mailto:" withString:#""];
//and here is your email string
NSLog(#"%#",emailString);
Since iOS 7 this is easily doable with NSURLComponents. You can create that object with:
if let components = NSURLComponents(URL: url, resolvingAgainstBaseURL:false) { ...
Then you can get the recipient accessing the path property of NSURLComponents; and the parameters with the queryItems property. For instance, if we wanted to get the subject, something like this would do our job
let queryItems = components.queryItems as? [NSURLQueryItem]
let subject = queryItems?.filter({$0.name == "subject"}).first?.value
NSURL category for just mailto: This method also has a fix for a crash bug in Fabian's answer above when mailto: url doesn't contain a ?. It also doesn't require the URLDecodedString category method.
#implementation NSURL (Additions)
- (NSDictionary *) parameterDictionaryForMailTo {
NSMutableDictionary *parameterDictionary = [[NSMutableDictionary alloc] init];
NSString *mailtoParameterString = [[self absoluteString] substringFromIndex:[#"mailto:" length]];
NSUInteger questionMarkLocation = [mailtoParameterString rangeOfString:#"?"].location;
if (questionMarkLocation != NSNotFound) {
[parameterDictionary setObject:[mailtoParameterString substringToIndex:questionMarkLocation] forKey:#"recipient"];
NSString *parameterString = [mailtoParameterString substringFromIndex:questionMarkLocation + 1];
NSArray *keyValuePairs = [parameterString componentsSeparatedByString:#"&"];
for (NSString *queryString in keyValuePairs) {
NSArray *keyValuePair = [queryString componentsSeparatedByString:#"="];
if (keyValuePair.count == 2)
[parameterDictionary setObject:[[keyValuePair objectAtIndex:1] stringByRemovingPercentEncoding] forKey:[[keyValuePair objectAtIndex:0] stringByRemovingPercentEncoding]];
}
}
else {
[parameterDictionary setObject:mailtoParameterString forKey:#"recipient"];
}
return [parameterDictionary copy];
}
- (NSDictionary *) parameterDictionaryFromURL:(NSURL *)url {
NSMutableDictionary *parameterDictionary = [[NSMutableDictionary alloc] init];
NSURLComponents * urlComponents = [NSURLComponents componentsWithString:url.absoluteString];
for (NSURLQueryItem *item in urlComponents.queryItems) {
parameterDictionary[item.name] = item.value;
}
if ([url.scheme isEqualToString:#"mailto"]) {
NSUInteger questionMarkLocation = [url.resourceSpecifier rangeOfString:#"?"].location;
if (questionMarkLocation == NSNotFound) {
parameterDictionary[#"recipient"] = url.resourceSpecifier;
} else {
parameterDictionary[#"recipient"] = [url.resourceSpecifier substringToIndex:questionMarkLocation];
}
}
return [parameterDictionary copy];
}
I need to know how you can find out when all processes (loaded) from a - (void) are done, if it's possible.
Why? I'm loading in data for a UITableView, and I need to know when a Loading... view can be replaced with the UITableView, and when I can start creating the cells.
This is my code:
- (void) reloadData {
NSAutoreleasePool *releasePool = [[NSAutoreleasePool alloc] init];
NSLog(#"Reloading data.");
NSURL *urlPosts = [NSURL URLWithString:[NSString stringWithFormat:#"%#", URL]];
NSError *lookupError = nil;
NSString *data = [[NSString alloc] initWithContentsOfURL:urlPosts encoding:NSUTF8StringEncoding error:&lookupError];
postsData = [data componentsSeparatedByString:#"~"];
[data release], data = nil;
urlPosts = nil;
self.numberOfPosts = [[postsData objectAtIndex:0] intValue];
self.postsArrayID = [[postsData objectAtIndex:1] componentsSeparatedByString:#"#"];
self.postsArrayDate = [[postsData objectAtIndex:2] componentsSeparatedByString:#"#"];
self.postsArrayTitle = [[postsData objectAtIndex:3] componentsSeparatedByString:#"#"];
self.postsArrayComments = [[postsData objectAtIndex:4] componentsSeparatedByString:#"#"];
self.postsArrayImgSrc = [[postsData objectAtIndex:5] componentsSeparatedByString:#"#"];
NSMutableArray *writeToPlist = [NSMutableArray array];
NSMutableArray *writeToNoImagePlist = [NSMutableArray array];
NSMutableArray *imagesStored = [NSMutableArray arrayWithContentsOfFile:[rootPath stringByAppendingPathComponent:#"imagesStored.plist"]];
int loop = 0;
for (NSString *postID in postsArrayID) {
if ([imagesStored containsObject:[NSString stringWithFormat:#"%#.png", postID]]){
NSLog(#"Allready stored, jump to next. ID: %#", postID);
continue;
}
NSLog(#"%#.png", postID);
NSData *imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:[postsArrayImgSrc objectAtIndex:loop]]];
// If image contains anything, set cellImage to image. If image is empty, try one more time or use noImage.png, set in IB
if (imageData == nil){
NSLog(#"imageData is empty before trying .jpeg");
// If image == nil, try to replace .jpg with .jpeg, and if that worked, set cellImage to that image. If that is also nil, use noImage.png, set in IB.
imageData = [NSData dataWithContentsOfURL:[NSURL URLWithString:[[postsArrayImgSrc objectAtIndex:loop] stringByReplacingOccurrencesOfString:#".jpg" withString:#".jpeg"]]];
}
if (imageData != nil){
NSLog(#"imageData is NOT empty when creating file");
[fileManager createFileAtPath:[rootPath stringByAppendingPathComponent:[NSString stringWithFormat:#"images/%#.png", postID]] contents:imageData attributes:nil];
[writeToPlist addObject:[NSString stringWithFormat:#"%#.png", postID]];
} else {
[writeToNoImagePlist addObject:[NSString stringWithFormat:#"%#", postID]];
}
imageData = nil;
loop++;
NSLog(#"imagePlist: %#\nnoImagePlist: %#", writeToPlist, writeToNoImagePlist);
}
NSMutableArray *writeToAllPlist = [NSMutableArray arrayWithArray:writeToPlist];
[writeToPlist addObjectsFromArray:[NSArray arrayWithContentsOfFile:nowPlist]];
[writeToAllPlist addObjectsFromArray:[NSArray arrayWithContentsOfFile:[rootPath stringByAppendingPathComponent:#"imagesStored.plist"]]];
[writeToNoImagePlist addObjectsFromArray:[NSArray arrayWithContentsOfFile:[rootPath stringByAppendingPathComponent:#"noImage.plist"]]];
[writeToPlist writeToFile:nowPlist atomically:YES];
[writeToAllPlist writeToFile:[rootPath stringByAppendingPathComponent:#"imagesStored.plist"] atomically:YES];
[writeToNoImagePlist writeToFile:[rootPath stringByAppendingPathComponent:#"noImage.plist"] atomically:YES];
[releasePool release];
}
It is as simple as returning a bool at the bottom of the selector being run in the background, and reaload the UITableView.
Thanks to #iWasRobbed:
I have never done this, but just speculating: have you tried returning a BOOL at the very end so that the reloadData function will return TRUE when it gets to that point? I am assuming (possibly incorrectly) that the device serially handles tasks one-at-a-time, so give it a shot.