將ZXing集成到我的應用程序中

Question

我需要構建一個應用程序來識別QR碼，而不會強制用戶安裝其他應用程序。將來，我還需要在識別代碼之前操作掃描的圖像（由我掃描的代碼將具有反轉的顏色）。

試圖按照提示和教程從這些鏈接：
Integrating the ZXing library directly into my Android application
Embedding ZXing in android app
http://karanbalkar.com/2013/12/tutorial-65-implement-barcode-scanner-using-zxing-in-android/

創造一些基本的代碼並運行該應用程序後，我點擊我的掃描按鈕，並得到一個錯誤No Activity found to handle Intent { act=com.google.zxing.client.android.SCAN (has extras) }

我所做的：
創建新項目
Copy core-3.2.1.ja R鍵庫/
添加調用的意圖和結果處理由我添加

意圖/結果代碼：

private Button scan; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    scan= (Button)findViewById(R.id.btnScan); 

    scan.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      // TODO Auto-generated method stub 
      Intent intent = new Intent("com.google.zxing.client.android.SCAN"); 
      intent.putExtra("SCAN_MODE", "QR_CODE_MODE"); 
      startActivityForResult(intent, 0); 
     } 
    }); 
} 

public void onActivityResult(int requestCode, int resultCode, Intent intent) { 
    if (requestCode == 0) { 
     if (resultCode == RESULT_OK) { 

      String contents = intent.getStringExtra("SCAN_RESULT"); 
      String format = intent.getStringExtra("SCAN_RESULT_FORMAT"); 

      // Handle successful scan 
      MultiFormatWriter writer = new MultiFormatWriter(); 


     } else if (resultCode == RESULT_CANCELED) { 
      // Handle cancel 
      Log.i("App","Scan unsuccessful"); 
     } 
    } 
} 

如何啓動意圖是什麼？我究竟做錯了什麼？

Answer 1

應啓動掃描這樣的：

@Override 
    public void onClick(View v) { 
     IntentIntegrator integrator = new IntentIntegrator(MainActivity.this); 
     integrator.setDesiredBarcodeFormats(IntentIntegrator.ALL_CODE_TYPES); 
     //in case you want to customize a bit. 
     integrator.setPrompt("Scan a QR/Bar code"); 
     integrator.setCameraId(0); 
     integrator.setBeepEnabled(false); 
     integrator.initiateScan(); 
    } 

接收結果是這樣的：

@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    switch (requestCode) { 
     case IntentIntegrator.REQUEST_CODE: { 
      if (resultCode != RESULT_CANCELED) { 
       IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, data); 
       String data = scanResult.getContents(); 
       // use this data 
      } else { 
       // error 
      } 
      break; 
     } 
    } 
} 

編輯1：

這對你的應用程序的build.gradle添加爲dependencies：

compile 'com.journeyapps:zxing-android-embedded:3.0.2@aar' 
compile 'com.google.zxing:core:3.2.0' 

Answer 2

嘗試下面的鏈接它的工作對我來說：

https://github.com/dlazaro66/QRCodeReaderView