我想要做的是能够扫描二维码然后自动加载相关网页。 我已经下载了Redlaser SDK，并且在我有的时候尽可能多地检查它，而我不明白的一件事是SDK的实际方法。在我进入ZBar之前，我真的很想知道如何实现这个简单的任务。
这是SDK.h文件：
/*******************************************************************************
RedLaserSDK.h
(c) 2009-2011 eBay Inc.
This is the public API for the RedLaser SDK.
*/
#ifdef __cplusplus
extern "C" {
#endif
// Barcode Symbologies
#define kBarcodeTypeEAN13 0x1
#define kBarcodeTypeUPCE 0x2
#define kBarcodeTypeEAN8 0x4
#define kBarcodeTypeSTICKY 0x8
#define kBarcodeTypeQRCODE 0x10
#define kBarcodeTypeCODE128 0x20
#define kBarcodeTypeCODE39 0x40
#define kBarcodeTypeDATAMATRIX 0x80
#define kBarcodeTypeITF 0x100
#define kBarcodeTypeEAN5 0x200
#define kBarcodeTypeEAN2 0x400
#define kBarcodeTypeCodabar 0x800
typedef enum
{
RLState_EvalModeReady = 1,
RLState_LicensedModeReady = 2,
RLState_MissingOSLibraries = -1,
RLState_NoCamera = -2,
RLState_BadLicense = -3,
RLState_ScanLimitReached = -4,
} RedLaserStatus;
#if TARGET_OS_MAC
/*******************************************************************************
RL_GetRedLaserSDKVersion()
This function returns the version of the RedLaser SDK, as a NSString.
The primary purpose of this function is checking which SDK version you're
linking against, to compare that version against the most recent version
on redlaser.com.
*/
NSString *RL_GetRedLaserSDKVersion();
/*******************************************************************************
RL_CheckReadyStatus()
This function returns information about whether the SDK can be used. It
doesn't give dynamic state information about what the SDK is currently doing.
Generally, positive values mean you can scan, negative values mean you
can't. The returned value *can* change from one call to the next.
If this function returns a negative value, it's usually best to design your
app so that it won't attempt to scan at all. If this function returns
MissingOSLibraries this is especially important, as the SDK will probably
crash if used. See the documentation.
*/
RedLaserStatus RL_CheckReadyStatus();
#import <Foundation/Foundation.h>
@class BarcodePickerController;
/*******************************************************************************
BarcodeResult
The return type of the recognizer is a NSSet of Barcode objects.
*/
@interface BarcodeResult : NSObject <NSCoding> { }
@property (readonly) int barcodeType;
@property (readonly, retain) NSString *barcodeString;
@property (readonly, copy) NSString *extendedBarcodeString;
@property (readonly) BarcodeResult *associatedBarcode;
@property (readonly, retain) NSDate *firstScanTime;
@property (readonly, retain) NSDate *mostRecentScanTime;
@property (readonly, retain) NSMutableArray *barcodeLocation;
@end
/*******************************************************************************
BarcodePickerControllerDelegate
The delegate receives messages about the results of a scan. This method
gets called when a scan session completes.
*/
@protocol BarcodePickerControllerDelegate <NSObject>
@optional
- (void) barcodePickerController:(BarcodePickerController*)picker
returnResults:(NSSet *)results;
@end
#if TARGET_OS_IPHONE
/*******************************************************************************
FindBarcodesInUIImage
Searches the given image for barcodes, and returns information on all barcodes
that it finds. This performs an exhaustive search, which can take several
seconds to perform. This method searches for all barcode types. The intent
of this method is to allow for barcode searching in photos from the photo library.
*/
NSSet *FindBarcodesInUIImage(UIImage *inputImage);
/*******************************************************************************
CameraOverlayViewController
An optional overlay view that is placed on top of the camera view.
This view controller receives status updates about the scanning state, and
can update the user interface.
*/
@interface CameraOverlayViewController : UIViewController { }
@property (readonly, assign) BarcodePickerController *parentPicker;
- (void)barcodePickerController:(BarcodePickerController*)picker
statusUpdated:(NSDictionary*)status;
@end
/*******************************************************************************
BarcodePickerController
This ViewController subclass runs the RedLaser scanner, detects barcodes, and
notifies its delegate of what it found.
*/
@interface BarcodePickerController : UIViewController { }
- (void) pauseScanning;
- (void) resumeScanning;
- (void) prepareToScan;
- (void) clearResultsSet;
- (void) doneScanning;
- (BOOL) hasFlash;
- (void) turnFlash:(BOOL)value;
- (void) requestCameraSnapshot;
@property (nonatomic, retain) CameraOverlayViewController *overlay;
@property (nonatomic, assign) id <BarcodePickerControllerDelegate> delegate;
@property (nonatomic, assign) BOOL scanUPCE;
@property (nonatomic, assign) BOOL scanEAN8;
@property (nonatomic, assign) BOOL scanEAN13;
@property (nonatomic, assign) BOOL scanSTICKY;
@property (nonatomic, assign) BOOL scanQRCODE;
@property (nonatomic, assign) BOOL scanCODE128;
@property (nonatomic, assign) BOOL scanCODE39;
@property (nonatomic, assign) BOOL scanDATAMATRIX;
@property (nonatomic, assign) BOOL scanITF;
@property (nonatomic, assign) BOOL scanEAN5;
@property (nonatomic, assign) BOOL scanEAN2;
@property (nonatomic, assign) BOOL scanCODABAR;
@property (nonatomic, assign) CGRect activeRegion;
@property (nonatomic, assign) UIImageOrientation orientation;
@property (nonatomic, assign) BOOL torchState;
@property (readonly, assign) BOOL isFocusing;
@property (nonatomic, assign) BOOL useFrontCamera;
@end
#endif
#endif
#ifdef __cplusplus
}
#endif
有问题的方法是doneScanning方法 - 找到的方法的实际主体在哪里？从我所知道的SDK中没有源文件，这是我需要在自己的应用程序中编辑的方法。
答案 0 :(得分：0)
SDK的实际方法被编译成静态库。该库位于“RedLaser SDK Files / libRedLaserSDK.a”的SDK存档中。您需要在应用程序中包含此库。我们不会将资源发送到RedLaser SDK。您不需要编辑doneScanning或任何其他SDK方法。
SDK附带的Sample应用程序有一个很好的基本用法示例。为了扫描QR码并打开网页，您所要做的就是编写一个覆盖statusUpdated：方法的CameraOverlayViewController类。此方法应查看通过状态字典传入的扫描QR码，查看QR码是否确实包含URL作为其文本（许多QR码是URL，但规范不要求它;它们可以是任何文本字符串），并在找到有效代码时调用doneScanning（）以退出扫描会话。据推测，您可以使用URL打开WebView。
示例应用程序中的文件“OverlayController.m”有一个很好的例子来说明如何设置它。