비트 맵이 대화 상자에 표시되지 않습니다

Question

경고 대화 상자에서 비트 맵을 설정하는 데 문제가 있습니다. 나는 다른 클래스의 바코드를 만들었고 바코드를 대화 상자에 표시하려고합니다. 오류가 계속 표시됩니다. 로그에서 바코드가 성공적으로 생성됩니다. 문제는 계속 qrCodeImageView.setImageBitmap(bitmap); 행을 가리키고 있습니다. 도와주세요.

이것은 활동의 메소드입니다.

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setImageBitmap(android.graphics.Bitmap)' on a null object reference 
10-22 08:51:36.491 10948-10948/newgbacard.gbacard.com.gbacard W/System.err:  at newgbacard.gbacard.com.gbacard.activities.ContactDetailActivity$10.run(ContactDetailActivity.java:336) 
10-22 08:51:36.491 10948-10948/newgbacard.gbacard.com.gbacard W/System.err:  at android.app.Activity.runOnUiThread(Activity.java:5575) 
10-22 08:51:36.491 10948-10948/newgbacard.gbacard.com.gbacard W/System.err:  at newgbacard.gbacard.com.gbacard.activities.ContactDetailActivity.showQRCode(ContactDetailActivity.java:316) 
10-22 08:51:36.491 10948-10948/newgbacard.gbacard.com.gbacard W/System.err:  at newgbacard.gbacard.com.gbacard.activities.ContactDetailActivity$5.onClick(ContactDetailActivity.java:168) 
10-22 08:51:36.491 10948-10948/newgbacard.gbacard.com.gbacard W/System.err:  at android.view.View.performClick(View.java:5184) 
10-22 08:51:36.491 10948-10948/newgbacard.gbacard.com.gbacard W/System.err:  at android.view.View$PerformClick.run(View.java:20910) 
10-22 08:51:36.491 10948-10948/newgbacard.gbacard.com.gbacard W/System.err:  at android.os.Handler.handleCallback(Handler.java:739) 
10-22 08:51:36.491 10948-10948/newgbacard.gbacard.com.gbacard W/System.err:  at android.os.Handler.dispatchMessage(Handler.java:95) 
10-22 08:51:36.491 10948-10948/newgbacard.gbacard.com.gbacard W/System.err:  at android.os.Looper.loop(Looper.java:145) 
10-22 08:51:36.491 10948-10948/newgbacard.gbacard.com.gbacard W/System.err:  at android.app.ActivityThread.main(ActivityThread.java:5942) 
10-22 08:51:36.491 10948-10948/newgbacard.gbacard.com.gbacard W/System.err:  at java.lang.reflect.Method.invoke(Native Method) 
10-22 08:51:36.491 10948-10948/newgbacard.gbacard.com.gbacard W/System.err:  at java.lang.reflect.Method.invoke(Method.java:372) 
10-22 08:51:36.491 10948-10948/newgbacard.gbacard.com.gbacard W/System.err:  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1400) 
10-22 08:51:36.491 10948-10948/newgbacard.gbacard.com.gbacard W/System.err:  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1195) 

이 제발 도와주세요 :

public void showQRCode(final Bundle bundle){ 
    runOnUiThread(new Runnable() { 
     @Override 
     public void run() { 
      try { 
       barcodeUtil = new BarcodeUtil(); 

       Bitmap bitmap = barcodeUtil.createQRCcode(ContactDetailActivity.this, bundle); 

       AlertDialog.Builder builder = new AlertDialog.Builder(ContactDetailActivity.this); 
       Log.i(Constants.TAG_GBACARD, "Bmp in Dialog: " + bitmap); 

       LayoutInflater inflater = getLayoutInflater(); 
       View dialogLayout = inflater.inflate(R.layout.custom_dialog, null); 
       builder.setView(dialogLayout); 


       final ImageView qrCodeImageView = (ImageView) findViewById(R.id.qrCode); 



       qrCodeImageView.setImageBitmap(bitmap); 

       builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() { 
        @Override 
        public void onClick(DialogInterface dialog, int which) { 
         dialog.dismiss(); 
        } 
       }); 

       AlertDialog b = builder.create(); 
       b.show(); 

      } catch (Exception e){ 
       e.printStackTrace(); 
      } 
     } 
    }); 
} 

이

이 오류 인 바코드를

public Bitmap createQRCcode(final Context context, final Bundle bundle) { 
    Bitmap bitmap = null; 
    try { 
     //Find screen size 
     WindowManager manager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); 
     Display display = manager.getDefaultDisplay(); 
     Point point = new Point(); 
     display.getSize(point); 
     int width = point.x; 
     int height = point.y; 
     int smallerDimension = width < height ? width : height; 
     smallerDimension = smallerDimension * 3/4; 

     //Encode with a QR Code image 
     qrCodeEncoder = new QRCodeEncoder(null, 
       bundle, 
       Contents.Type.CONTACT, 
       BarcodeFormat.QR_CODE.toString(), 
       smallerDimension); 

      bitmap = qrCodeEncoder.encodeAsBitmap(); 

      Log.i(Constants.TAG_GBACARD, "QR Encoded"); 

      Log.i(Constants.TAG_GBACARD, "Bitmap: " + bitmap); 



    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
    return bitmap; 
} 

를 생성하는 방법이다. 감사합니다

Answer 1

는 지금 작동이

final ImageView qrCodeImageView = (ImageView) dialogLayout.findViewById(R.id.qrCode);