Sunday, February 26, 2012

Batch Conversion PNG to JPEG or JPEG to PNG OS X

Open Terminal, cd to the directory containing your JPGs images and type:

mkdir pngs; sips -s format png *.* --out pngs

Open Terminal, cd to the directory containing your PNGs images and type:

mkdir jpegs; sips -s format jpeg *.* --out jpegs

Sunday, February 5, 2012

AR (Augmented reality), QR code and OCR reader library reference for iOS

Library reference for AR(Augmented Reality)
1. Qualcomm Dev Net
    Click here

Library reference for QR
1. Zxing for iOS
    GitHub Link Here

Library reference for OCR
1. ABBY'S SDK for iOS
    Click here

Thursday, February 2, 2012

Sort NSArray - iPhone SDK

Sort array of NSNumber

NSSortDescriptor *highestToLowest = [NSSortDescriptor sortDescriptorWithKey:@"self" ascending:NO];
[mutableArrayOfNumbers sortUsingDescriptors:[NSArray arrayWithObject:highestToLowest]];

Sort array of NSDictionary

NSSortDescriptor *descriptor = [[[NSSortDescriptor alloc] initWithKey:@"product_name" ascending:YES] autorelease];
NSArray *descriptors = [NSArray arrayWithObjects:descriptor, nil];

NSArray *realArray = [arrayObject sortedArrayUsingDescriptors:descriptors];