How to Generate QR Code using Google Api for iPhone/iPad?


Hi,

I have found one very simple way how to generate QR Code using Google Api.Just take 1 UIWebView in my code I have taken IBOutlet UIWebView *webView; and I want add this Much of Information in My QR Code.

1.Business Name

2.First Name and  Last Name

3.Physical Address and phone

4.Website

I have also taken 1 Button Event named here is QRcodeTapped.I am receiving all the Value from NSDictionary.Please check the bellowed methods.

– (IBAction)QRcodeTapped:(id)sender {

NSLog(@”d==%@”,[d valueForKey:@”QR Business Name”]);

NSLog(@”d==%@”,[d valueForKey:@”QR First Name”]);

NSLog(@”d==%@”,[d valueForKey:@”QR Last Name”]);

NSLog(@”d==%@”,[d valueForKey:@”QR  Last Name”]);

NSLog(@”d==%@”,[d valueForKey:@”QR Physical Address”]);

NSLog(@”d==%@”,[d valueForKey:@”QR Physical City”]);

NSLog(@”d==%@”,[d valueForKey:@”QR Physical State”]);

NSLog(@”d==%@”,[d valueForKey:@”QR Physical Zip”]);

NSLog(@”d==%@”,[d valueForKey:@”QR Physical Zip Plus 4″]);

NSLog(@”d==%@”,[d valueForKey:@”QR Website”]);

//this url has several parameters which is passed here. After that don’t Forget NSUTF8StringEncoding.

NSString *url=[NSString stringWithFormat:@”http://chart.apis.google.com/chart?cht=qr&chs=200×200&chl=MECARD:ORG%@CN%@%@CTEL%@CADR%@%@%@%@%@CEMAIL%@”,[d valueForKey:@”QR Business Name”],[d valueForKey:@”QR First Name”],[d valueForKey:@”QR Last Name”],[d valueForKey:@”QR Phone”],[d valueForKey:@”QR Physical Address”],[d valueForKey:@”QR Physical City”],[d valueForKey:@”QR Physical State”],[d valueForKey:@”QR Physical Zip”],[d valueForKey:@”QR Physical Zip Plus 4″],[d valueForKey:@”QR Website”]];

url=[url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

//Create a URL object.

NSURL *Curl=[NSURL URLWithString:url];

//URL Requst Object

NSURLRequest *request = [NSURLRequest requestWithURL:Curl];

//Load the request in the UIWebView.

[webView loadRequest:request];

}

Grab the Sample Code from Here

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How to add Email and Message in your native application?


Hi,

See new sample code “MessageComposer” which includes both Mail and Messages features.

This application shows how to target older OS versions while building with newly released APIs. It also illustrates how to use the MessageUI framework to edit and send email messages from within your application.

Tap the “Compose Mail” button to display an email composition interface if your device is running iPhone OS 3.0 or launch the Mail application, otherwise.

Step 1:

Add MessageUI.framework to your Application.Add this Header file to the .h file and Provide delegate of it as shown below.

#import <MessageUI/MessageUI.h>

#import <MessageUI/MFMailComposeViewController.h>

@interface MailComposerViewController : UIViewController <MFMailComposeViewControllerDelegate>

{

IBOutlet UILabel *message;

}

@property (nonatomic, retain) IBOutlet UILabel *message;

-(IBAction)showPicker:(id)sender;

-(void)displayComposerSheet;

-(void)launchMailAppOnDevice;

 

Step 2:Now write the code for mail.

-(IBAction)showPicker:(id)sender

{

// This sample can run on devices running iPhone OS 2.0 or later

// The MFMailComposeViewController class is only available in iPhone OS 3.0 or later.

// So, we must verify the existence of the above class and provide a workaround for devices running

// earlier versions of the iPhone OS.

// We display an email composition interface if MFMailComposeViewController exists and the device can send emails.

// We launch the Mail application on the device, otherwise.

 

Class mailClass = (NSClassFromString(@”MFMailComposeViewController”));

if (mailClass != nil)

{

// We must always check whether the current device is configured for sending emails

if ([mailClass canSendMail])

{

[self displayComposerSheet];

}

else

{

[self launchMailAppOnDevice];

}

}

else

{

[self launchMailAppOnDevice];

}

}

 

 

#pragma mark –

#pragma mark Compose Mail

 

// Displays an email composition interface inside the application. Populates all the Mail fields.

-(void)displayComposerSheet

{

MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];

picker.mailComposeDelegate = self;

 

[picker setSubject:@”Hello from Ankit Vyas!”];

// Set up recipients

NSArray *toRecipients = [NSArray arrayWithObject:@”first@example.com”];

NSArray *ccRecipients = [NSArray arrayWithObjects:@”second@example.com”, @”third@example.com”, nil];

NSArray *bccRecipients = [NSArray arrayWithObject:@”fourth@example.com”];

 

[picker setToRecipients:toRecipients];

[picker setCcRecipients:ccRecipients];

[picker setBccRecipients:bccRecipients];

 

// Attach an image to the email

NSString *path = [[NSBundle mainBundle] pathForResource:@”rainy” ofType:@”png”];

NSData *myData = [NSData dataWithContentsOfFile:path];

[picker addAttachmentData:myData mimeType:@”image/png” fileName:@”rainy”];

 

// Fill out the email body text

NSString *emailBody = @”It is raining in sunny California!”;

[picker setMessageBody:emailBody isHTML:NO];

 

[self presentModalViewController:picker animated:YES];

[picker release];

}

// Dismisses the email composition interface when users tap Cancel or Send. Proceeds to update the message field with the result of the operation.

– (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error

{

message.hidden = NO;

// Notifies users about errors associated with the interface

switch (result)

{

case MFMailComposeResultCancelled:

message.text = @”Result: canceled”;

break;

case MFMailComposeResultSaved:

message.text = @”Result: saved”;

break;

case MFMailComposeResultSent:

message.text = @”Result: sent”;

break;

case MFMailComposeResultFailed:

message.text = @”Result: failed”;

break;

default:

message.text = @”Result: not sent”;

break;

}

[self dismissModalViewControllerAnimated:YES];

}

#pragma mark –

#pragma mark Workaround

// Launches the Mail application on the device.

-(void)launchMailAppOnDevice

{

NSString *recipients = @”mailto:first@example.com?cc=second@example.com,third@example.com&subject=Hello from California!”;

NSString *body = @”&body=It is raining in sunny California!”;

 

NSString *email = [NSString stringWithFormat:@”%@%@”, recipients, body];

email = [email stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

 

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:email]];

}

#pragma mark –

#pragma mark Unload views

 

– (void)viewDidUnload

{

// Release any retained subviews of the main view.

// e.g. self.myOutlet = nil;

self.message = nil;

}

#pragma mark –

#pragma mark Memory management

– (void)dealloc

{

[message release];

[super dealloc];

}

for more detail Grab the Code From Here

How to restrict user for only IntegerValue in UITextfield for iPad/iPhone?


Hi,

There are some situations where we required that User should input only numeric value like 0to9.In that kind of situation we have to use this tricks with UITextField’s delegate method.

– (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string  {

NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];

[numberFormatter setNumberStyle:NSNumberFormatterDecimalStyle];

NSNumber* candidateNumber;

NSString* candidateString = [textField.text stringByReplacingCharactersInRange:range withString:string];

range = NSMakeRange(0, [candidateString length]);

[numberFormatter getObjectValue:&candidateNumber forString:candidateString range:&range error:nil];

if (([candidateString length] > 0) && (candidateNumber == nil || range.length < [candidateString length]))

{

return NO;

}

else

{

return YES;

}

}

Day-14 for iOS development


Click here for Lecture 14 which includes

1.UIImagePickerController( Getting still photos or video from the user either from camera or photo library)

2. MPMovie[View]PlayerController   ( How to play videos )

3. ALAssetsLibrary   (How to store images or videos in the user’s photo album)

4. Sounds  ( How to play simple sounds and record simple audio snippets)