Good morning!
I am very new to iPhone/iPad programming
My app is crashing (signal SIGABRT) after trying to change views after a Login
-(void)checkLogin {
NSString *filePath = [[NSBundle mainBundle] pathForResource:#"LoginData" ofType:#"txt"];
NSString *myText = [NSString stringWithContentsOfFile:filePath];
//Parse lines into an NSArray;
NSArray *results= [myText componentsSeparatedByString:#"\n"];// Assumes Mac line end return
if([txtUsername.text isEqualToString: [results objectAtIndex:0]]&& [txtPassword.text isEqualToString: [results objectAtIndex:1]])
{
Clients * clients = [[Clients alloc] initWithNibName:#"clients" bundle:nil];
[self presentModalViewController:clients animated:YES];
}
else
{
UIAlertView* alert = [[UIAlertView alloc] initWithTitle:#"Login"
message:#"Wrong credentials"
delegate:nil
cancelButtonTitle:#"Close"
otherButtonTitles:nil];
[alert show];
}
}
#end
The app is crashing at this line
[self presentModalViewController:clients animated:YES];
Thank you very much!
Clients * clients = [[AboutUs alloc] initWithNibName:#"clients" bundle:nil];
[self presentModalViewController:clients animated:YES];
I think the first line is where your app gets stuck. turn it into:
Clients *clients = [[Clients alloc] initWithNibName:#"clients" bundle:nil];
[self presentModalViewController:clients animated:YES];
This code should work, but In your question, you put a certain aboutUs in your code.
I don't know what you want to do with this from you question, but if you want to put this AboutUs controller inside your Clients controller, you should use something like:
Clients *clients = [[Clients alloc] initWithRootViewController:aboutUs];
hope this helps you
Have you tried doing it like this:
Clients *myClients = [[Clients alloc] init];
[self presentViewController:clients animated:YES completion:^(void) {
}];
It should work properly. If it still crashes, something in the Clients class is going wrong.
I have saved a pdf file in the apps documents folder on the iPad. I want the user to open that PDF file on iPad using iBooks. Is there any way to open the PDF in iBooks which is saved in documents folder of the application?
EDIT : Best option : Use UIActivityViewController
//create file path here
NSString *strFileURL = [NSTemporaryDirectory() stringByAppendingPathComponent:#"data.pdf"];
//Check if file path exists or not
BOOL checkExist = [[NSFileManager defaultManager] fileExistsAtPath:strFileURL isDirectory:nil];
if (checkExist)
{
//create NSURL object from string path
NSURL *urlFilePath = [NSURL fileURLWithPath:strFileURL];
UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:#[urlFilePath] applicationActivities:nil];
//for iOS8 check
if ( [activityViewController respondsToSelector:#selector(popoverPresentationController)] )
{
//use triggering UI element like say here its button
activityViewController.popoverPresentationController.sourceView = yourBtnSender;
}
//now present activityViewController
[self presentViewController:activityViewController animated:YES completion:NULL];
}
Another option use UIDocumentInteractionController for this:
//create file path here
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
NSString *pdfFilePath [documentsDir stringByAppendingPathComponent:yourPdfFile.pdf];// your yourPdfFile file here
NSURL *url = [NSURL fileURLWithPath:pdfPath];
//create documentInteractionController here
UIDocumentInteractionController *docController = [UIDocumentInteractionController interactionControllerWithURL:url];
//set delegate
docController.delegate = self;
//provide button's frame from where popover will be lauched
BOOL isValid = [docController presentOpenInMenuFromRect:yourReadPdfButton.frame inView:self.view animated:YES]; // Provide where u want to read pdf from yourReadPdfButton
//check if its ready show popover
if (!isValid)
{
NSString * messageString = [NSString stringWithFormat:#"No PDF reader was found on your device. In order to consult the %#, please download a PDF reader (eg. iBooks).", yourPDFFileTitle];
UIAlertView * alertView = [[UIAlertView alloc] initWithTitle:#"Error" message:messageString delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alertView show];
}
Use UIDocumentInteractionControllerDelegate method
// UIDocumentInteractionController delegate method
- (void)documentInteractionControllerDidDismissOpenInMenu:(UIDocumentInteractionController *)controller {
NSLog(#"dissmissed");
}
Credit goes to #Mutix 's answer
I want to resign UIAlertView containing activity indicator. I am putting following code. It is working while loading data but the UIalertview is not resigning after successful parsing. What condition should I give here???
- (void) updateFilterProgress{
NSAutoreleasePool *pool = [NSAutoreleasePool new];
UIAlertView *alert = [[[UIAlertView alloc] initWithTitle:#"Loading..." message:nil delegate:self cancelButtonTitle:nil otherButtonTitles: nil] autorelease];
[alert show];
UIActivityIndicatorView *indicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
// Adjust the indicator so it is up a few pixels from the bottom of the alert
indicator.center = CGPointMake(alert.bounds.size.width / 2, alert.bounds.size.height - 50);
[indicator startAnimating];
[alert addSubview:indicator];
[indicator release];
[pool release];
}
ON my button click event I put following code
// **EDIT==1**
[NSThread detachNewThreadSelector:#selector(updateFilterProgress) toTarget:self withObject:nil];toTarget:self withObject:nil]; //for calling updateFilterProgress
NSString *url = [NSString stringWithFormat:#"http://....url...../hespdirectory/phpsqlsearch_genxml.php?lat=%f&radius=%f&lng=%f",lati,longi,radius];
//NSLog(#"NSString *url");
NSLog(#"%#", url);
//NSString *escapedUrl = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]
NSURL *URL = [NSURL URLWithString:url];
NSXMLParser *xmlParser = [[NSXMLParser alloc] initWithContentsOfURL:URL];
//Initialize the delegate.
XMLParser *parser = [[XMLParser alloc] initXMLParser];
//Set delegate
[xmlParser setDelegate:parser];
//Start parsing the XML file.
BOOL success = [xmlParser parse];
if(success)
{ **//EDIT==2**
[alert dismissWithClickedButtonIndex:0 animated:YES]; //for resigning alertview
for (int i = 0; i < [appDelegate.markers count]; i++)
{
//marker *aMarker = [[marker alloc] init];
marker *aMarker = [appDelegate.markers objectAtIndex:i];
location.latitude = [aMarker.lat floatValue];
location.longitude =[aMarker.lng floatValue];
AddressAnnotation *annobj = [[AddressAnnotation alloc] initWithCoordinate:location];
annobj.title = aMarker.name;
[mapView addAnnotation:annobj];
[annobj release];
}
}
I want to resign this UIAlertView containing activity indicator.......
Set your UIAlertView and ActivityIndicator (and all objects inside the alert view) as members of your class file.
Then, where you'd normally release these items (and where you want to dismiss the alert) you can call this:
[myAlertView dismissWithClickedButtonIndex:0 animated:YES];
This has the same effect as if though the user clicked the cancel button on it, which is perfectly acceptable.
Hope this helps!
I am writing an iPhone app that requires that I send an e-mail attachment programmatically. The attachment is a csv file, that I create through the code. I then attach the file to the email, and the attachment shows up on the phone. When I send the email to myself, however, the attachment doesn't appear in the e-mail. Here is the code I'm using.
[self exportData];
if ([MFMailComposeViewController canSendMail])
{
NSString *filePath = [[NSBundle mainBundle] pathForResource:#"expenses" ofType:#"csv"];
NSData *myData = [NSData dataWithContentsOfFile:filePath];
MFMailComposeViewController *mailer = [[MFMailComposeViewController alloc] init];
mailer.mailComposeDelegate = self;
[mailer setSubject:#"Vehicle Expenses from myConsultant"];
NSString *emailBody = #"";
[mailer setMessageBody:emailBody isHTML:NO];
[mailer addAttachmentData:myData mimeType:#"text/plain" fileName:#"expenses"];
[self presentModalViewController:mailer animated:YES];
[mailer release];
}
else
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Failure"
message:#"Your device doesn't support the composer sheet"
delegate:nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
[alert release];
}
}
- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error
{
switch (result)
{
case MFMailComposeResultCancelled:
NSLog(#"Mail cancelled: you cancelled the operation and no email message was queued.");
break;
case MFMailComposeResultSaved:
NSLog(#"Mail saved: you saved the email message in the drafts folder.");
break;
case MFMailComposeResultSent:
NSLog(#"Mail send: the email message is queued in the outbox. It is ready to send.");
break;
case MFMailComposeResultFailed:
NSLog(#"Mail failed: the email message was not saved or queued, possibly due to an error.");
break;
default:
NSLog(#"Mail not sent.");
break;
}
// Remove the mail view
[self dismissModalViewControllerAnimated:YES];
The is being successfully created- I checked in the simulator files.
- (void) exportData
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
NSString *root = [documentsDir stringByAppendingPathComponent:#"expenses.csv"];
NSString *temp=#"Date,Purpose,Start Odometer,End Odometer, Total Driven, Fees, ";
for(int i = 0; i < expenses.count; i++){
VehicleExpense *tempExpense = [expenses objectAtIndex:i];
temp = [temp stringByAppendingString:tempExpense.date];
temp = [temp stringByAppendingString:#", "];
temp = [temp stringByAppendingString:tempExpense.purpose];
temp = [temp stringByAppendingString:#", "];
temp = [temp stringByAppendingString:[NSString stringWithFormat: #"%.02f",tempExpense.start_mile]];
temp = [temp stringByAppendingString:#", "];
temp = [temp stringByAppendingString:[NSString stringWithFormat: #"%.02f",tempExpense.end_mile]];
temp = [temp stringByAppendingString:#", "];
temp = [temp stringByAppendingString:[NSString stringWithFormat: #"%.02f",tempExpense.distance]];
temp = [temp stringByAppendingString:#", "];
temp = [temp stringByAppendingString:[NSString stringWithFormat: #"%.02f",tempExpense.fees]];
temp = [temp stringByAppendingString:#", "];
}
[temp writeToFile:root atomically:YES encoding:NSUTF8StringEncoding error:NULL];
NSLog(#"got here in export data--- %#", documentsDir);
}
try
[mailer addAttachmentData:myData mimeType:#"text/csv" fileName:#"expenses.csv"];
Edit:
This is the code I'm using in my app:
- (IBAction) ExportData:(id)sender
{
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *filePath = [documentsDirectory stringByAppendingPathComponent:kExportFileName];
self.timeRecords = [[NSMutableArray alloc] init];
for (int i=0; i< [self.selectedTimeEntries count]; i++)
for (int j=0; j<[[self.selectedTimeEntries objectAtIndex:i] count]; j++)
if ([[self.selectedTimeEntries objectAtIndex:i] objectAtIndex:j] == [NSNumber numberWithBool:YES])
[self.timeRecords addObject:[self timeEntriesForDay:[self.uniqueArray objectAtIndex:i] forIndex:j]];
if( !([self.timeRecords count]!=0))
{
UIAlertView *alert=[[UIAlertView alloc] initWithTitle:#"There are no time entries selected!" message:#"Please select at least one time entry before proceeding" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alert show];
[alert release];
return;
}
NSMutableString *csvLine;
NSError *err = nil;
NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"yyyy-MM-dd"];
NSString *dateString = nil;
NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setPositiveFormat:#"###0.##"];
NSString *formattedNumberString = nil;
if(![[NSFileManager defaultManager] fileExistsAtPath:filePath])
{
[[NSFileManager defaultManager] createFileAtPath:filePath contents:nil attributes:nil];
}
for (timeEntries *timeEntry in self.timeRecords) {
csvLine = [NSMutableString stringWithString:timeEntry.client];
[csvLine appendString:#","];
[csvLine appendString:timeEntry.category];
[csvLine appendString:#","];
[csvLine appendString:timeEntry.task];
[csvLine appendString:#","];
dateString = [dateFormatter stringFromDate:[NSDate dateWithTimeIntervalSince1970:timeEntry.date]];
[csvLine appendString:dateString];
[csvLine appendString:#","];
formattedNumberString = [numberFormatter stringFromNumber:timeEntry.duration];
[csvLine appendString:formattedNumberString];
[csvLine appendString:#","];
[csvLine appendString:timeEntry.description];
[csvLine appendString:#"\n"];
if([[NSFileManager defaultManager] fileExistsAtPath:filePath])
{
NSString *oldFile = [[NSString alloc] initWithContentsOfFile:filePath];
[csvLine insertString:oldFile atIndex:0];
BOOL success =[csvLine writeToFile:filePath atomically:NO encoding:NSUTF8StringEncoding error:&err];
if(success){
}
[oldFile release];
}
}
if (!appDelegate.shouldSendCSV) {
self.csvText = csvLine;
}
if([[NSFileManager defaultManager] fileExistsAtPath:filePath])
{
[self emailExport:filePath];
}
self.selectedTimeEntries =nil;
self.navigationController.toolbarHidden = NO;
}
- (void)emailExport:(NSString *)filePath
{
NSLog(#"Should send CSV = %#", [NSNumber numberWithBool:appDelegate.shouldSendCSV]);
MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
picker.mailComposeDelegate = self;
// Set the subject of email
[picker setSubject:#"My Billed Time Export"];
// Add email addresses
// Notice three sections: "to" "cc" and "bcc"
NSString *valueForEmail = [[NSUserDefaults standardUserDefaults] stringForKey:#"emailEntry"];
NSString *valueForCCEmail = [[NSUserDefaults standardUserDefaults] stringForKey:#"ccEmailEntry"];
if( valueForEmail == nil || [valueForEmail isEqualToString:#""])
{
UIAlertView *alert=[[UIAlertView alloc] initWithTitle:#"Please set an email address before sending a time entry!" message:#"You can change this address later from the settings menu of the application!" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alert show];
[alert release];
return;
}
else {
[picker setToRecipients:[NSArray arrayWithObjects:valueForEmail, nil]];
}
if(valueForCCEmail != nil || ![valueForCCEmail isEqualToString:#""])
{
[picker setCcRecipients:[NSArray arrayWithObjects:valueForCCEmail, nil]];
}
// Fill out the email body text
NSString *emailBody = #"My Billed Time Export File.";
// This is not an HTML formatted email
[picker setMessageBody:emailBody isHTML:NO];
if (appDelegate.shouldSendCSV) {
// Create NSData object from file
NSData *exportFileData = [NSData dataWithContentsOfFile:filePath];
// Attach image data to the email
[picker addAttachmentData:exportFileData mimeType:#"text/csv" fileName:#"MyFile.csv"];
} else {
[picker setMessageBody:self.csvText isHTML:NO];
}
// Show email view
[self presentModalViewController:picker animated:YES];
// Release picker
[picker release];
}
Dani's answer is great, however the code seems to be too long for someone looking for a simple way to send an attachment through email programatically.
The Gist
I pruned his answer to take out only the important bits, as well as refactored it like so:
MFMailComposeViewController *mailComposer = [[MFMailComposeViewController alloc] init];
mailComposer.mailComposeDelegate = self;
mailComposer.subject = #"Sample subject";
mailComposer.toRecipients = #[#"arthur#example.com", #"jeanne#example.com", ...];
mailComposer.ccRecipients = #[#"nero#example.com", #"mashu#example.com", ...];
[mailComposer setMessageBody:#"Sample body" isHTML:NO];
NSData *fileData = [NSData dataWithContentsOfFile:filePath];
[mailComposer addAttachmentData:fileData
mimeType:mimeType
fileName:fileName];
[self presentViewController:mailComposer animated:YES completion:nil];
That's basically the gist of it, this is enough as it is. If, for example, you put this code on a button's action, it will present an email composing screen with the respective fields pre-filled up, as well as having the file you want attached to the email.
Further Reading
Framework
The MFMailComposeViewController is under the MessageUI Framework, so to use it, import (if you have not done yet) the Framework like so:
#import <MessageUI/MessageUI.h>
Mail Capability Checking
Now when you run the source code, and you have not yet setup a mail account on your device, (not sure what the behavior is on simulator), this code will crash your app. It seems that if the mail account is not yet setup, doing [[MFMailComposeViewController alloc] init] will still result in the mailComposer being nil, causing the crash. As the answer in the linked question states:
You should check is MFMailComposeViewController are able to send your mail just before sending
You can do this by using the canSendMail method like so:
if (![MFMailComposeViewController canSendMail]) {
[self openCannotSendMailDialog];
return;
}
You can put this right before doing [[MFMailComposeViewController alloc] init] so that you can notify the user immediately.
Handling cannotSendMail
If canSendMail returns false, according to Apple Dev Docs, that means that the device is not configured for sending mail. This could mean that maybe the user has not yet setup their Mail account. To help the user with that, you can offer to open the Mail app and setup their account. You can do this like so:
NSURL *mailUrl = [NSURL URLWithString:#"message://"];
if ([[UIApplication sharedApplication] canOpenURL:mailUrl]) {
[[UIApplication sharedApplication] openURL:mailUrl];
}
You can then implement openCannotSendMailDialog like so:
- (void)openCannotSendMailDialog
{
UIAlertController *alert =
[UIAlertController alertControllerWithTitle:#"Error"
message:#"Cannot send mail."
preferredStyle:UIAlertControllerStyleAlert];
NSURL *mailUrl = [NSURL URLWithString:#"message://"];
if ([[UIApplication sharedApplication] canOpenURL:mailUrl]) {
[alert addAction:
[UIAlertAction actionWithTitle:#"Open Mail"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction * _Nonnull action) {
[[UIApplication sharedApplication] openURL:mailUrl];
}]];
[alert addAction:
[UIAlertAction actionWithTitle:#"Cancel"
style:UIAlertActionStyleCancel
handler:^(UIAlertAction * _Nonnull action) {
}]];
} else {
[alert addAction:
[UIAlertAction actionWithTitle:#"OK"
style:UIAlertActionStyleCancel
handler:^(UIAlertAction * _Nonnull action) {
}]];
}
[self presentViewController:alert animated:YES completion:nil];
}
Mime Types
If like me, you forgot/are unsure which mimeType to use, here is a resource you can use. Most probably, text/plain is enough, if the file you are attaching is just a plain text, or image/jpeg / image/png for images.
Delegate
As you probably noticed, Xcode throws us a warning on the following line:
mailComposer.mailComposeDelegate = self;
This is because we have not yet set ourself to conform to the appropriate protocol and implement its delegate method. If you want to receive events whether the mail was cancelled, saved, sent or even failed sending, you need to set your class to conform to the protocol MFMailComposeViewControllerDelegate, and handle the following events:
MFMailComposeResultSent
MFMailComposeResultSaved
MFMailComposeResultCancelled
MFMailComposeResultFailed
According to Apple Dev Docs (emphasis mine):
The mail compose view controller is not dismissed automatically. When the user taps the buttons to send the email or cancel the interface, the mail compose view controller calls the mailComposeController:didFinishWithResult:error: method of its delegate. Your implementation of that method must dismiss the view controller explicitly.
With this in mind, we can then implement the delegate method like so:
- (void)mailComposeController:(MFMailComposeViewController *)controller
didFinishWithResult:(MFMailComposeResult)result
error:(NSError *)error
{
switch (result) {
case MFMailComposeResultSent:
// Mail was sent
break;
case MFMailComposeResultSaved:
// Mail was saved as draft
break;
case MFMailComposeResultCancelled:
// Mail composition was cancelled
break;
case MFMailComposeResultFailed:
//
break;
default:
//
break;
}
// Dismiss the mail compose view controller.
[controller dismissViewControllerAnimated:YES completion:nil];
}
Conclusion
The final code may look like so:
- (void)openMailComposerWithSubject:(NSString *)subject
toRecipientArray:(NSArray *)toRecipientArray
ccRecipientArray:(NSArray *)ccRecipientArray
messageBody:(NSString *)messageBody
isMessageBodyHTML:(BOOL)isHTML
attachingFileOnPath:(NSString)filePath
mimeType:(NSString *)mimeType
{
if (![MFMailComposeViewController canSendMail]) {
[self openCannotSendMailDialog];
return;
}
MFMailComposeViewController *mailComposer =
[[MFMailComposeViewController alloc] init];
mailComposer.mailComposeDelegate = self;
mailComposer.subject = subject;
mailComposer.toRecipients = toRecipientArray;
mailComposer.ccRecipients = ccRecipientArray;
[mailComposer setMessageBody:messageBody isHTML:isHTML];
NSData *fileData = [NSData dataWithContentsOfFile:filePath];
NSString *fileName = filePath.lastPathComponent;
[mailComposer addAttachmentData:fileData
mimeType:mimeType
fileName:fileName];
[self presentViewController:mailComposer animated:YES completion:nil];
}
- (void)openCannotSendMailDialog
{
UIAlertController *alert =
[UIAlertController alertControllerWithTitle:#"Error"
message:#"Cannot send mail."
preferredStyle:UIAlertControllerStyleAlert];
NSURL *mailUrl = [NSURL URLWithString:#"message://"];
if ([[UIApplication sharedApplication] canOpenURL:mailUrl]) {
[alert addAction:
[UIAlertAction actionWithTitle:#"Open Mail"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction * _Nonnull action) {
[[UIApplication sharedApplication] openURL:mailUrl];
}]];
[alert addAction:
[UIAlertAction actionWithTitle:#"Cancel"
style:UIAlertActionStyleCancel
handler:^(UIAlertAction * _Nonnull action) {
}]];
} else {
[alert addAction:
[UIAlertAction actionWithTitle:#"OK"
style:UIAlertActionStyleCancel
handler:^(UIAlertAction * _Nonnull action) {
}]];
}
[self presentViewController:alert animated:YES completion:nil];
}
- (void)mailComposeController:(MFMailComposeViewController *)controller
didFinishWithResult:(MFMailComposeResult)result
error:(NSError *)error
{
NSString *message;
switch (result) {
case MFMailComposeResultSent:
message = #"Mail was sent.";
break;
case MFMailComposeResultSaved:
message = #"Mail was saved as draft.";
break;
case MFMailComposeResultCancelled:
message = #"Mail composition was cancelled.";
break;
case MFMailComposeResultFailed:
message = #"Mail sending failed.";
break;
default:
//
break;
}
// Dismiss the mail compose view controller.
[controller dismissViewControllerAnimated:YES completion:^{
if (message) {
UIAlertController *alert =
[UIAlertController alertControllerWithTitle:#"Confirmation"
message:message
preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:
[UIAlertAction actionWithTitle:#"OK"
style:UIAlertActionStyleCancel
handler:^(UIAlertAction * _Nonnull action) {
}]];
[self presentViewController:alert animated:YES completion:nil];
}
}];
}
With the button action looking like:
- (IBAction)mailButtonTapped:(id)sender
{
NSString *reportFilePath = ...
[self openMailComposerWithSubject:#"Report Files"
toRecipientArray:mainReportRecipientArray
ccRecipientArray:subReportRecipientArray
messageBody:#"I have attached report files in this email"
isMessageBodyHTML:NO
attachingFileOnPath:reportFilePath
mimeType:#"text/plain"];
}
I kind of went overboard here, but you can, with a grain of salt, take and use the code I posted here. Of course there is a need to adapt it to your requirements, but that is up to you. (I also modified this answer from my working source code, so there might be errors somewhere, please do comment if you find one :))
The issue was that I wasn't looking in the proper place for the file. Thanks #EmilioPalesz .
Here's the code I needed:
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
NSString *root = [documentsDir stringByAppendingPathComponent:#"expenses.csv"]
NSData *myData = [NSData dataWithContentsOfFile:root];
Holy Dudes from stackoverflow,
MY PROBLEM: I need to send an email with 3 attachments. The first that is the .txt, is going well, no problems with him, but the problem is with the pictures. I capture a printscreen with this:
-(IBAction)screenShot{
maintimer = [NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:#selector(update) userInfo:nil repeats:YES];
}
-(void)update{
time = time + 1;
if(time == 2){
[self hideThem]; //hides the buttons
UIGraphicsBeginImageContext(self.bounds.size);
[self.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *screenImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIImageWriteToSavedPhotosAlbum(screenImage, nil, nil, nil);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"GRAPH SAVED" message:#"YOUR GRAPH HAS BEEN SAVEN IN THE PHOTO ALBUM" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alert show];
[alert release];
[maintimer invalidate];
time = 0;
}
[self bringThem]; //brings the buttons back
}
But now i need to get this image i created! I tried using the same code i use for the text:
-(IBAction)sendMail
{
(..)
//HERE IS WHERE THE NAME IS GIVEN
NSString *filename = [NSString stringWithFormat:#"%f.txt", [[NSDate date] timeIntervalSince1970]];
//THIS IS GOING TO STORE MY MESSAGE STUFF
NSString *content = [[NSMutableString alloc]init];
(...) //LOTS OF UNNECESSARY CODE
//HERE IS WHERE IT BILDS THE FILE
[self writeToTextFile:filename content:content];
//HERE IS THE CODE WHERE IT ATTACHES THE FILE
[self sendMailWithFile:filename];
//[content release];
}
-(void)sendMailWithFile : (NSString *)file
{
//THIS IS THE CODE THAT GETS THE TEXT
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *fileName = [NSString stringWithFormat:#"%#/%#", documentsDirectory, file];
NSData *data = [[NSData alloc] initWithContentsOfFile:fileName];
//THIS WAS MY TRY TO GET THE PHOTO ON THE SAME STYLE OF THE TEXT
NSArray *photoPath = NSSearchPathForDirectoriesInDomains(NSPicturesDirectory, NSUserDomainMask, YES);
NSString *photoDirectoryForFirstPhoto = [photoPath objectAtIndex:0];
NSString *photoName_First = [NSString stringWithFormat:#"%#/%#", photoDirectoryForFirstPhoto, /*I DO NOT HAVE THE PHOTO NAME*/#"FirstPhoto"];
NSData *photoData_First = [[NSData alloc] initWithContentsOfFile:photoName_First];
MFMailComposeViewController *mailComposer = [[MFMailComposeViewController alloc] init];
if ([MFMailComposeViewController canSendMail])
{
mailComposer = [[MFMailComposeViewController alloc] init];
mailComposer.mailComposeDelegate = self;
[mailComposer setSubject:#"RK4 data"];
[mailComposer addAttachmentData:data mimeType:#"text/plain" fileName:#"[RK4][EQUATION][TEXT]"];
[mailComposer addAttachmentData:photoData_First mimeType:#"image/png" fileName:#"[RK4][EQUATION][IMAGE]"];
[mailComposer setMessageBody:#"iCalculus Runge-Kutta data." isHTML:NO];
[self presentModalViewController:mailComposer animated:YES];
}
else (...)
[mailComposer release];
[data release];
}
So that's my problem. I need to find a way to get the printscreen i took and attach it.
Because i need to come up with all the attaches in the email as soon as he clicks the "SEND MAIL" button.
Thanks.
Rather than saving to your photo library, you should save to documents directory, or tmp directory, to get documents directory you can use the following.
NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString* dd = [paths objectAtIndex:0];
NSString *path = [dd stringByAppendingPathComponent:#"file.png"];
[UIImagePNGRepresentation(screenImage) writeToFile:path atomically:NO];
Take a look here for how to embed the image directly inside the email using base-64, that should be much cleaner than dumping temporary images to the users saved photos album.
Edit:
Category for handling base 64 with NSData, use the download towards the bottom.