2014-11-02 121 views
0
@Override 
public void onClick(View v) { 
    if (v.getId() == R.id.scan_button) { 
     Log.i("result", "START SCAN"); 
     IntentIntegrator scanIntegrator = new IntentIntegrator(
       BarcodeScan.this); 
     scanIntegrator.initiateScan(); 

    } 
} 

@Override 
public void onActivityResult(int requestCode, int resultCode, Intent intent) { 
    super.startActivityForResult(intent, resultCode); 
    Log.i("result", "Result Out"); 
    if (requestCode == 0) { 
     IntentResult scanningResult = IntentIntegrator.parseActivityResult(
       requestCode, resultCode, intent); 
     if (resultCode == RESULT_OK) { 
      if (scanningResult != null) { 
       String scanContent = scanningResult.getContents(); 
       DatabaseAdapter mDbHelper = new DatabaseAdapter(this); 
       mDbHelper.createDatabase(); 
       mDbHelper.open(); 
       BookController bc = new BookController(mDbHelper.open()); 
       Log.i("result", scanContent); 
       String bookID = bc.getBookIDByBarcode(scanContent); 
       System.out.println(bookID); 
       intent = new Intent(context, ReserveBook.class); 
       intent.putExtra("BookID", bookID); 
       startActivity(intent); 
       this.finish(); 
      } else { 
       Toast toast = Toast.makeText(getApplicationContext(), 
         "No scan data received!", Toast.LENGTH_SHORT); 
       toast.show(); 
      } 
     } else if (resultCode == RESULT_CANCELED) { 
      // Handle cancel 
      Log.i("App", "Scan unsuccessful"); 
     } 
    } 
} 

我正在執行Zxing條碼掃描到我的應用程序中,我可以掃描條形碼,但掃描後應用程序停止。在LogCat中,開始掃描打印出來。之後,該應用程序關閉。Zxing android掃描條形碼,onActivityResult不會調用

回答

0

不要調用super.startActivityForResult(intent,resultCode);刪除這一行。

+0

同樣的結果,掃描應用程序關閉後。 – user3687053 2014-11-02 06:41:49

+0

刪除該行後,您是否至少會看到Log.i(「result」,「Result Out」);打印在您的調試控制檯上? – 2014-11-02 13:27:27

+0

刪除除了Log.i(「result」,scanContent)之外的所有內容if(scanningResult!= null){}聲明。可能是您的ReserveBook活動沒有像您那樣開始,或者數據庫未打開。反正,如果你能看到Log.i(「result」,「Result Out」);和Log.i(「result」,scanContent);打印出來,那麼你可以聲稱onActivityResult()被正確調用。 – 2014-11-02 13:32:47