圖像像素進行處理，誤差：java.lang.IllegalArgumentException異常

我試圖操縱的圖像的像素，但它給出了一個錯誤：圖像像素進行處理，誤差：java.lang.IllegalArgumentException異常

java.lang.IllegalArgumentException: x must be < bitmap.width()

這是我的代碼..

   Uri selectedImg = data.getData(); 
       String[] filePathColumn = {MediaStore.Images.Media.DATA}; 
       Cursor cursor = getContentResolver().query(selectedImg, filePathColumn, null, null, null); 
       cursor.moveToFirst(); 
       int columnIndex = cursor.getColumnIndex(filePathColumn[0]); 
       String picturePath = cursor.getString(columnIndex); 
       cursor.close(); 

       Toast.makeText(this, "Successfull!", Toast.LENGTH_LONG); 
       image = (ImageView)findViewById(R.id.imageView); 
       image.setImageBitmap(BitmapFactory.decodeFile(picturePath)); 
       BitmapDrawable abmp = (BitmapDrawable) image.getDrawable(); 
       bmp = abmp.getBitmap(); 
       image.setImageBitmap(bmp); 

       brightBtn.setOnClickListener(new View.OnClickListener() { 

        @Override 
        public void onClick(View v) { 
         operation = Bitmap.createBitmap(bmp.getWidth(), bmp.getHeight(), bmp.getConfig()); 

         for (int i = 0; i < bmp.getWidth(); i++) { 
          for (int j = 0; j < bmp.getHeight(); i++) { 
           int p = bmp.getPixel(i, j); 
           int r = Color.red(p); 
           int b = Color.blue(p); 
           int g = Color.green(p); 
           int alpha = Color.alpha(p); 

           r = r + 100; 
           g = g + 100; 
           b = b = 100; 
           alpha = alpha + 100; 

           operation.setPixel(i, j, Color.argb(alpha, r, g, b)); 
          } 
         } 
         image.setImageBitmap(operation); 
        } 

       }); 


      } 
     }

這是logcat的錯誤：

04 20:11:11.076 19366-19366/com.example..photoeditingapp E/AndroidRuntime: FATAL EXCEPTION: main 
03-04 20:11:11.076 19366-19366/com.example..photoeditingapp E/AndroidRuntime: Process: com.example.zohair.photoeditingapp, PID: 19366 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime: java.lang.IllegalArgumentException: x must be < bitmap.width() 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime:  at android.graphics.Bitmap.checkPixelAccess(Bitmap.java:1449) 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime:  at android.graphics.Bitmap.getPixel(Bitmap.java:1401) 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime:  at com.example.zohair.photoeditingapp.MainActivity$3.onClick(MainActivity.java:95) 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime:  at android.view.View.performClick(View.java:4640) 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime:  at android.view.View$PerformClick.run(View.java:19425) 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime:  at android.os.Handler.handleCallback(Handler.java:733) 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime:  at android.os.Handler.dispatchMessage(Handler.java:95) 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime:  at android.os.Looper.loop(Looper.java:146) 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime:  at android.app.ActivityThread.main(ActivityThread.java:5593) 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime:  at java.lang.reflect.Method.invokeNative(Native Method) 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime:  at java.lang.reflect.Method.invoke(Method.java:515) 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime:  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283) 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime:  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099) 
03-04 20:11:11.076 19366-19366/com.example.zohair.photoeditingapp E/AndroidRuntime:  at dalvik.system.NativeStart.main(Native Method) 
03-04 20:11:12.676 19366-19366/com.example.zohair.photoeditingapp I/Process: Sending signal. PID: 19366 SIG: 9

來源

2016-03-04 Zohair Suleman

添加您在logcat中發生的錯誤。 – RominaV

請爲您的錯誤發佈堆棧跟蹤 –

對不起，我新來的Stackoverflow，所以我可能不會把東西放在他們的位置 –

你正在創建相同的位圖對象多次並設置爲imageview。

您可以多次使用位圖對象。不需要重新創建對象。

Toast.makeText(this, "Successfull!", Toast.LENGTH_LONG); 
image = (ImageView)findViewById(R.id.imageView); 
bmp = BitmapFactory.decodeFile(picturePath); 
// image.setImageBitmap(BitmapFactory.decodeFile(picturePath)); 
// BitmapDrawable abmp = (BitmapDrawable) image.getDrawable(); 
// bmp = abmp.getBitmap(); 
image.setImageBitmap(bmp);

沒有必要從Imageview獲得BitmapDrawable或Bitmap再次因爲你已經在bmp原始位。

來源

2016-03-04 19:29:14

您通過這條線增加i兩次......

for (int j = 0; j < bmp.getHeight(); i++) {

它應該是...

for (int j = 0; j < bmp.getHeight(); j++) {

來源

2016-03-04 19:33:36 ManoDestra

檢查您的循環......第二循環已經增加i，但你初始化並使用j的值。我認爲這會造成問題。

來源

2016-03-05 19:38:16

圖像像素進行處理，誤差：java.lang.IllegalArgumentException異常

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