ZBar barcode QR code scanning control developed for IOS (91)

When we develop ios applications, especially e-commerce applications, we often encounter bar code scanning business needs. Fortunately, we already have open-source sdks for us-bar code sdks for ios, the following describes how to use this open-source SDK:

 

 

The specific implementation process is as follows:

Step 1: Download The zbar sdk.

Step 2: Create a project

Step 3: add the downloaded ZBarSDK to the project.

Step 4: Add. framework to the project.

 

 

Fifth, add the header file referenced by the Library

 

Sixth, add a button to control the scan function.

 

Code implementation:

1) Add the ZBarReaderDelegate protocol to the. h file.

2) In the. m implementation file, implement the following code:

// Enable scanning and call the iphone camera

 

-(IBAction) scanButtonTapped

{

ZBarReaderViewController * reader = [ZBarReaderViewController new];

Reader. readerDelegate = self;

Zbarimageworkflow * reader. Category = reader. category;

 

[Export setSymbology: ZBAR_I25

Config: zbar_assist_enable

To: 0];

 

[Self presentModalViewController: reader animated: YES];

[Reader release];

}

 

 

// Proxy method

 

-(Void) imagePickerController: (UIImagePickerController *) reader

DidFinishPickingMediaWithInfo: (NSDictionary *) info

{

 

NSLog (@ "info = % @", info );

// Obtain the bar code result

Id <NSFastEnumeration> results =

[Info objectForKey: ZBarReaderControllerResults];

ZBarSymbol * symbol = nil;

For (symbol in results)

// EXAMPLE: just grab the first barcode

Break;

 

// Display the obtained barcode to our interface

ResultText. text = symbol. data;

 

// The scanned image is displayed on our interface.

ResultImage. image =

[Info objectForKey: UIImagePickerControllerOriginalImage];

 

// Exit the scan interface

[Reader dismissModalViewControllerAnimated: YES];

}