IOS開發---菜鳥學習之路--（二十）-二維碼掃描功能的實現

本章將講解如何實現二維碼掃描的功能

首先在github上下載ZBar SDK
地址https://github.com/bmorton/ZBarSDK

然后將如下的相關類庫添加進去

AVFoundation.framwork, CoreMedia.framework, CoreVideo.framework, libiconv.dylib 和libzbar.a

接下來首先在.h文件中引用

#import "ZBarSDK.h"

同時添加代理

ZBarReaderDelegate

然后在.m文件中添加如下代碼

-(void)sysbutbuttonclick{
    
    ZBarReaderViewController *reader = [ZBarReaderViewController new];
    reader.readerDelegate = self;
    ZBarImageScanner *scanner = reader.scanner;
    
    [scanner setSymbology: ZBAR_I25
                   config: ZBAR_CFG_ENABLE
                       to: 0];
    [self presentModalViewController: reader    animated: YES];
}

- (void) imagePickerController: (UIImagePickerController*) reader
 didFinishPickingMediaWithInfo: (NSDictionary*) info
{
    
    NSLog(@"info=%@",info);
    // 得到條形碼結果
    id<NSFastEnumeration> results =[info objectForKey: ZBarReaderControllerResults];
    ZBarSymbol *symbol = nil;
    for(symbol in results)
        // EXAMPLE: just grab the first barcode
        break;
    
    
    UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"信息提示!" message:symbol.data delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"確定", nil];
    [alert show];
    // 將獲得到條形碼顯示到我們的界面上
    // resultText.text = symbol.data;
    NSLog(@"%@",symbol.data);
    // 掃描時的圖片顯示到我們的界面上
    //  resultImage.image =
    // [info objectForKey: UIImagePickerControllerOriginalImage];
    
    // 掃描界面退出
    //[reader dismissModalViewControllerAnimated: YES];
}

然后需要觸發掃描事件的時候 就調用

sysbutbuttonclick 就可以 了