You are building apps for the iPhone/iPad, yet you remain curious about what the cloud can offer. Is it possible to deploy scalable, mobile Web applications on Windows Azure? How about storing data in the cloud? Is it possible to use the cloud for push notifications to the device? In this session you’ll learn how to integrate iOS applications into an existing Windows Azure infrastructure, and what types of applications other organizations are building. You’ll walk away confident in knowing how to extend your existing applications to take advantage of features on the device together with services in the cloud.

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By default, when you create a new file or import a file into Xcode, if the file type is recognized as a source file (.c, .m .js, etc), the file is added to the Compile Sources folder in the application target.
You may not always prefer this default action – for example, if a JavaScript file is imported, Xcode does not know what to do with this file type so a compile warning is generated

Read More

// Create and return the UIImage object
CGImageRef cgImage = CGBitmapContextCreateImage(context);
UIImage *uiImage = [[UIImage alloc] initWithCGImage:cgImage];
UIGraphicsPopContext();
CGContextRelease(context);
CGImageRelease(cgImage);
return uiImage;
}


Note: This is a repost of this

Part 2: A Closer Look
This session will give a brief introduction to memory management and a closer look to APIs and components
Slideshare:

Part 3: More than UI
This session deals with the APIs in Foundation framework.
Slideshare:

Something like what in the picture shown below

Following code will draw one like that..

-(void)loadView:{
// Write code to create self.view
// Then...
pickerViewArray = [[NSArray arrayWithObjects:
 @"John Appleseed", @"Chris Armstrong", @"Serena Auroux",
 @"Susan Bean", @"Luis Becerra", @"Kate Bell", @"Alain Briere",
 nil] retain];
 myPickerView = [[UIPickerView alloc] initWithFrame:CGRectZero];
 myPickerView.delegate = self;
 myPickerView.showsSelectionIndicator =YES;
 myPickerView.backgroundColor = [UIColor clearColor];
 CGAffineTransform rotate = CGAffineTransformMakeRotation(3.14/2);
 rotate = CGAffineTransformScale(rotate, 0.25, 2.0);
 [self.myPickerView setTransform:rotate];
 [self.view addSubview:myPickerView];
} 

// UIPickerViewDelegate

- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view{
	CGRect rect = CGRectMake(0, 0, 120, 80);
	UILabel *label = [[UILabel alloc]initWithFrame:rect];
	CGAffineTransform rotate = CGAffineTransformMakeRotation(3.14/2);
	rotate = CGAffineTransformScale(rotate, 0.25, 2.0);
	[label setTransform:rotate];
	label.text = [pickerViewArray objectAtIndex:row];
	label.font = [UIFont systemFontOfSize:22.0];
	label.textAlignment = UITextAlignmentCenter;
	label.numberOfLines = 2;
	label.lineBreakMode = UILineBreakModeWordWrap;
	label.backgroundColor = [UIColor clearColor];
	label.clipsToBounds = YES;
	return label ;
}

Courtesy: Syed Yusuf

-(BOOL)validateEmail:(NSString*)email

if( (0 != [email rangeOfString:@"@"].length) &&  (0 != [email rangeOfString:@"."].length) )
	{
		NSMutableCharacterSet *invalidCharSet = [[[[NSCharacterSet alphanumericCharacterSet] invertedSet]mutableCopy]autorelease];
		[invalidCharSet removeCharactersInString:@"_-"];

		NSRange range1 = [email rangeOfString:@"@" options:NSCaseInsensitiveSearch];

		// If username part contains any character other than "."  "_" "-"

		NSString *usernamePart = [email substringToIndex:range1.location];
		NSArray *stringsArray1 = [usernamePart componentsSeparatedByString:@"."];
		for (NSString *string in stringsArray1) {
			NSRange rangeOfInavlidChars=[string rangeOfCharacterFromSet: invalidCharSet];
			if(rangeOfInavlidChars.length !=0 || [string isEqualToString:@""])
				return NO;
		}

		NSString *domainPart = [email substringFromIndex:range1.location+1];
		NSArray *stringsArray2 = [domainPart componentsSeparatedByString:@"."];

		for (NSString *string in stringsArray2) {
			NSRange rangeOfInavlidChars=[string rangeOfCharacterFromSet:invalidCharSet];
			if(rangeOfInavlidChars.length !=0 || [string isEqualToString:@""])
				return NO;
		}

		return YES;
	}
	else // no '@' or '.' present
		return NO;

Our App in Staff Favorite List

Today we got a mail from the client that one of the app we created is listed in the “Staff Favorite” List…and appearing in the ‘Home page’ of App Store… its cool…

Moreover all our apps are listed in first page for ‘Valentine Special’ list as well.. Cheers…

All the above navigations are through pushing view controllers.

I am trying to add accelerometer delegate methods to select any of the cell in tableview on tilting the device up or down, moreover tilting right will push the view controller and tilting left will pop.

• My concern is about how to set delegate for UIAccelerometer for such an implementation? 
• Also the method like “selectCellAtIndexPath” will simply highlight the cell, so i want to call UITableView’s delegate method  ”didSelectRowAtIndexPath” explicitly. ( to push corresponding viewcontroller)

I don’t think there is much harm in doing so..
But i would like to hear from someone who implemented this in much better way…

Checkout an abstract sample code

and do #import based on that definition using #ifdef

This is the pretty cool and easy way  if your are sharing single source code set across multiple target/build/project

Just make use of different .pch file for different builds.

You want to create <n>  number of .pch file for <n> targets. Assign corresponding  .pch file for each target’s info