Change UITextField placeholder text color -- iPhone

The introduction of attributed strings in UIViews in iOS 6, it's possible to assign a color to the placeholder text like this:

UIColor *color = [UIColor blackColor];

textField.attributedPlaceholder = [[NSAttributedString alloc] initWithString:placeholderText attributes:@{NSForegroundColorAttributeName: color}];

capitalize first letter of NSString IOS - iPhone

NSString *myString = @"i love iPhone";

NSString *newString = [myString stringByReplacingCharactersInRange:NSMakeRange(0,1) withString:[[myStringsubstringToIndex:1] capitalizedString]];

Result -  "I love iPhone"

Facebook/Twitter API Integration in iOS6 - iPhone

You need to add Social.framework in your project.
Add  ---  #import "Social/Social.h"

You can create 3 type of service:

SLServiceTypeTwitter;

SLServiceTypeFacebook;

SLServiceTypeSinaWeibo;

For Facebook -

SLComposeViewController *facebookController=[SLComposeViewControllercomposeViewControllerForServiceType:SLServiceTypeFacebook];

if([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook])

{

        SLComposeViewControllerCompletionHandler __block completionHandler=^(SLComposeViewControllerResultresult){

        

        [facebookController dismissViewControllerAnimated:YES completion:nil];

        

        switch(result){

        case SLComposeViewControllerResultCancelled:

        default:

        {

            NSLog(@"Result Cancelled");

            

        }

            break;

        case SLComposeViewControllerResultDone:

        {

            NSLog(@"Result Post Done");

        }

            break;

    }};

    

    [facebookController addImage:[UIImage imageNamed:@"yourImage.jpg"]];

    [facebookController setInitialText:@"Check out this cool IOS Blog"];

    [facebookController addURL:[NSURL URLWithString:@"http://vijaysinghadhikari.blogspot.in/"]];

    [facebookController setCompletionHandler:completionHandler];

    [self presentViewController: facebookController animated:YES completion:nil];

}

Disable Cut,Copy, Select, Select All in UITextView - IOS

 Create a subclass of UITextView that overrides the canPerformAction:withSender: method to return NO for actions that you don't want to allow:

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender

{

    if (action == @selector(paste:))

        return NO;

    return [super canPerformAction:action withSender:sender];

}

Twitter Integration in IOS 5 using Twitter Framework +iPone

1 :- Add Twitter.framework

2 :- open ViewController.m and add the following import at the top of the file:

#import <Twitter/Twitter.h>

- (IBAction)twitterButtonClicked:(id)sender {

    {

        if ([TWTweetComposeViewController canSendTweet])

        {

            TWTweetComposeViewController *tweetSheet = [[TWTweetComposeViewController alloc] init];

            [tweetSheet setInitialText:

             @"Your tweet Message"];

            [self presentModalViewController:tweetSheet animated:YES];

        }

        else

        {

            UIAlertView *alertView = [[UIAlertView alloc]

                                      initWithTitle:@"Notification"

                                      message:@"You can't send a tweet right now, make sure your device has an internet connection and you have at least one Twitter account setup"

                                      delegate:self

                                      cancelButtonTitle:@"OK"                                                   

                                      otherButtonTitles:nil];

            [alertView show];

        }

    }

}

GData Integration in iphone

Step 1

The first step, is to head on over to the Google Code website for the Objective-C Client, download and extract the zip file source code. Alternatively, you can get the latest and greatest version via Subversion using:

svn checkout http://gdata-objectivec-client.googlecode.com/svn/trunk/ gdata-objectivec-client-read-only

If you downloaded the zip file from the website, you’ll have version 1.7.0, and if you used the svn code you’ll have a -read-only folder.

Step 2

Open up the GData XCode Project from your downloaded folder as well as your iPhone App XCode project.

Step 3

Drag over the GData Sources Folder from the GData project to your iPhone App project and add it as reference [don't check the box for Copy items into destination group's folder (if needed).] You do not need to copy over all the files into your project. You can, but it’s not required.

Step 4

Open up the build settings for your iPhone App project. Located and set the following settings. * Header Search Paths: /usr/include/libxml2 ../gdata-objectivec-client-1.9.1/Source * Other Linker Flags: -lxml2, -ObjC

For the Debug build configuration only, add the Other C Flags setting so that the library’s debug-only code is included:

Other C Flags: -DDEBUG=1

Step 5

Now be sure that the downloaded source code is in the same directory in which your actual Code Folder is.

Step 6 Make sure I've the frameworks "SystemConfiguration.FrameWork" and "Security.FrameWork" added to your project.

.These are the steps for GData integration

Check dis Link 4 more help ;-
http://hoishing.wordpress.com/2011/08/23/gdata-objective-c-client-setup-in-xcode-4/

App executing tasks in background +iPhone

-(void) applicationDidEnterBackground:(UIApplication*)application {

    

    UIApplication *app = [UIApplication sharedApplication];

    UIBackgroundTaskIdentifier bgTask = 0;

    bgTask = [app beginBackgroundTaskWithExpirationHandler:^{

        [app endBackgroundTask:bgTask];

    }];

}