Use Zbar to scan QR codes and barcodes in iOS

Recently did a outsourcing project, which used the QR code scanning and payment! Is familiar with is zxing, but in Xcode7.1 inside found unexpectedly inexplicable not support, wood has method, from on-line check also has a support QR code scan of thing, right is next I want to say of East, QR Code scan of sharp weapon zbarsdk. Gossip less ramble, to come!

1, download ZBARSDK official website Https://github.com/bmorton/ZBarSDK

2. Import the following frame

3. #import "ZBarSDK.h" in Appdelegetem file

And in

-(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (nsdictionary *) launchOptions

Add the following code inside

Two-dimensional code reading

[Zbarreaderviewclass];

4, in the QR Code scanning interface began #import "ZBarSDK.h", add

<ZBarReaderDelegate,ZBarReaderViewDelegate> Commission

Here's how to start the scanning process:
1. Get pictures from the camera
2. Identify images with Zbar's internal processing method
3. Process the information and display

Code implementation:

1. Create a View

-(void) creatview{    //For responding to scan events, click Start Scan    button = [UIButton buttonwithtype:uibuttontyperoundedrect];    [Button Setframe:cgrectmake (max, Max, Max)];    [Button settitle:@ "Scan" forstate:uicontrolstatenormal];    [Button addtarget:self action: @selector (scanbuttonpressed:) forcontrolevents:uicontroleventtouchupinside];    [Self.view Addsubview:button];    Used to display scanned images    ImageView = [[Uiimageview alloc]initwithframe:cgrectmake (280, 280)];    [Self.view Addsubview:imageview];    Used to display the scanned information    label = [[UILabel alloc]initwithframe:cgrectmake (356, 280, and)];    [Self.view Addsubview:label];}

2. Scan QR code

Method One: Directly invoke the Zbarreaderviewcontroller provided by Zbar to open a scanning interface

Step1: Scan QR code operation

-(void) scanbuttonpressed: (ID) sender{    zbarreaderviewcontroller *reader = [[Zbarreaderviewcontroller alloc]init] ;          Reader.readerdelegate = self;    Reader.supportedorientationsmask = Zbarorientationmaskall;    Zbarimagescanner *scanner = Reader.scanner;    [Scanner setsymbology:zbar_i25 config:zbar_cfg_enable to:0];    [Self Presentviewcontroller:reader animated:yes completion:nil];}

Step2: The corresponding method of zbarreaderdelegate is executed when the QR code callback is found.

-(void) Imagepickercontroller: (uiimagepickercontroller*) Reader didfinishpickingmediawithinfo: (nsdictionary*) Info {    //Get results via info    id<nsfastenumeration> results =    [info objectforkey:zbarreadercontrollerresults];    Zbarsymbol *symbol = nil;    for (symbol in results) break        ;  <span style= "White-space:pre" ></span>    imageview.image =    [info objectforkey: Uiimagepickercontrolleroriginalimage];    Scan interface Exit    [reader Dismissviewcontrolleranimated:yes completion:nil];}

Method Two: Use Zbar to provide a zbarreaderview that can be embedded in other views

Step1: Scan QR code operation

-(void) scanbuttonpressed: (ID) sender{    zbarreaderview *readerview = [[Zbarreaderview alloc]init];    Readerview.frame = CGRectMake (ten, +, +);    Readerview.readerdelegate = self;    Scanning area    CGRect scanmaskrect = CGRectMake (Cgrectgetmidy (readerview.frame)-126, (+);    Processing simulator    if (target_iphone_simulator) {        zbarcamerasimulator *camerasimulator        = [[Zbarcamerasimulator Alloc]initwithviewcontroller:self];        Camerasimulator.readerview = Readerview;    }    [Self.view Addsubview:readerview];    Scan area calculation    Readerview.scancrop = [self getscancrop:scanmaskrect readerViewBounds:readerView.bounds];    Call the Start method of Zbarreaderview to start scanning    [Readerview start];}

Step2: Scan area calculation

-(CGRect) Getscancrop: (cgrect) rect readerviewbounds: (cgrect) readerviewbounds{cgfloat x,y,width,height    ;        x = rect.origin.x/readerviewbounds.size.width;    y = rect.origin.y/readerviewbounds.size.height;    width = rect.size.width/readerviewbounds.size.width;    Height = rect.size.height/readerviewbounds.size.height;        return CGRectMake (x, y, width, height);}

Step3: The corresponding method of zbarreaderviewdelegate is executed when scanning to the QR code callback

-(void) Readerview: (Zbarreaderview *) Readerview didreadsymbols: (Zbarsymbolset *) symbols FromImage: (UIImage *) image
{   
For (Zbarsymbol *symbol in symbols)
{        NSLog (@ "%@", symbol.data);        
To display information on the lable         
Label.text =  Symbol.data;  
      Break   
}   

   [Readerview stop];
}

There is another point to note, QR Code scan page and other pages of the jump as far as possible to use

SAOMIAOVC *saomiao = [[[SAOMIAOVC alloc]init]autorelease];

Saomiao.hidesbottombarwhenpushed=yes;

saomiao.delegate=self;

Uinavigationcontroller *nav= [[[[Uinavigationcontroller alloc] Initwithrootviewcontroller:saomiao] autorelease];

[Self Presentviewcontroller:nav animated:yes completion:nil]; This way, because it is easy to use push to quit or destroy a variety of problems!

Use Zbar to scan QR codes and barcodes in iOS