ZXing 使用

使用ZXing來解讀Barcode

加入protocol
並實現以下兩個方法：
//成功解讀Barcode時 - (void)zxingController:(ZXingWidgetController*)controller didScanResult:(NSString *)result;
//Cancel 按鈕按下時 - (void)zxingControllerDidCancel:(ZXingWidgetController*)controller;

再來就是畫面的建立

//建立掃描畫面
ZXingWidgetController *widController = [[ZXingWidgetController alloc] initWithDelegate:self showCancel:YES OneDMode:NO];
[widController.overlayView setDisplayedMessage:@"請將條碼圖示置於框線內"];

//Barcode Reader
QRCodeReader* qrcodeReader = [[QRCodeReader alloc] init];
NSSet *readers = [[NSSet alloc ] initWithObjects:qrcodeReader,nil];
[qrcodeReader release];
widController.readers = readers;
[readers release];

//掃瞄完成時，聲音提示
NSBundle *mainBundle = [NSBundle mainBundle];
widController.soundToPlay =[NSURL fileURLWithPath:[mainBundle pathForResource:@"beep-beep" ofType:@"aiff"] isDirectory:NO];

//將描畫面加入主畫面
[self presentModalViewController:widController animated:YES];
[widController release];