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Integrating ZXing QR Code reader in iPhone / iOS applications

I spent a lot of time in integrating the QR code reader in iOS applications. I like to share you the steps and let you know the basic bugs that may happen during the integration process and how to debug that too :) Step 1  Download the latest code for QR code reader, zxing framework from github here . Step 2  Drag and drop the ZXingWidget.xcodeproj file to your project. Step 3  Copy the cpp folder from downloaded files (zxing-2.0) to your project. (The download files (zxing-2.0) depends upon the version that has been downloaded from github.) Step 4  Copy the iphone folder from downloaded files (zxing-2.0) to your project. (The download files (zxing-2.0) depends upon the version that has been downloaded from github.) Step 5 Add the following frameworks to your project.  Click on Project name -> Target -> Build Phases -> Link with libraries AudioToolbox.framework AddressBookUI.framework AddressBook.framework CoreVideo.framewor...
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Multiple line of text in UIPickerView

UIPickerView is a user interface component available from iOS 2.0 and above. The basic need of UIPickerView is to select any one option from the list of data that are loaded to the picker view. But, by default, only one line of text is allowed to be displayed in a UIPickerView . Today, we will try to add multi-line text to an UIPickerView . To do so, we need to implement the viewForComponent api.   - ( UIView  *)pickerView:( UIPickerView  *)pickerView viewForRow:( NSInteger )row forComponent:( NSInteger )component reusingView:( UIView  *)view; In that method, type cast the view parameter to an UILabel.    UILabel *pickerLabel = ( UILabel *)view; Update the frame size of the label.    CGRect frame = CGRectMake ( 0 , 0 , 265 , 40 );    pickerLabel = [[[ UILabel alloc ] initWithFrame :frame] autorelease ]; Set the properties of the label as per requirement.    [pickerLabel setTextAlig...
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Custom Message extension using Messages SDK - iMessage App store

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In our previous article , we discussed about creating custom sticker extension for our iMessage App store. We used images and using Messages SDK, we are able to create the custom extension for sticker. We also created a basic sticker extension in this article . Apple Messages SDK provides lot more features than just creating stickers. In today's article, we will create a custom message extension using Messages SDK and run them on iMessage app store. Before diving in to the project, lets look at the classes provided by Apple for implementation. MSMessagesAppViewController The MSMessagesAppViewController class acts as the principal view controller for Messages extensions. Use this class to manage your extension. MSMessageTemplateLayout The MSMessageTemplateLayout describes how an MSMessage object is presented in the transcript. The message template includes the Message extension’s icon, an image, video, or audio file, and a number of text elements (title, subtitle, captio...
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