Correct way to handle NumberFormatException

Question

Possible Duplicate:
how to handle number format exception

i want to enter digit in format like $22,000,420 everything is fine but when i erase number it shows number formatting exception.

my xml file is as follows:-

<EditText
        android:id="@+id/editAmountFinanced"
        style="@style/EditTextInputFinance"
        android:layout_below="@+id/txtCreateNewAccount"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="8dp"
        android:ems="10"
        android:hint="AMOUNT FINANCED"
         android:digits="0123456789.,$"
        android:padding="10dp" />

and my android java code is as follows:-

 editAmountFinanced = (EditText)findViewById(R.id.editAmountFinanced);

 editAmountFinanced.addTextChangedListener(new TextWatcher() {

        boolean isEdiging;
        @Override
        public void onTextChanged(CharSequence s, int start, int before,  int count) {
            // TODO Auto-generated method stub

        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
            // TODO Auto-generated method stub

        }

        @Override
        public void afterTextChanged(Editable s) {
            // TODO Auto-generated method stub
            if(isEdiging) return;
            isEdiging = true;

            String str = s.toString().replaceAll( "[^\\d]", "" );
            double s1 = Double.parseDouble(str);

            NumberFormat nf2 = NumberFormat.getInstance(Locale.ENGLISH);
            ((DecimalFormat)nf2).applyPattern("$ ###,###.###");
            try {

                s.replace(0, s.length(), nf2.format(s1));

                isEdiging = false;
            } catch(NumberFormatException e) {

            }

        }
    });

thanks

Answer 1

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in your case just put the try above double s1 =, like this

    double s1 = 0.0;
      try {
           s1 = Double.parseDouble(str);
     } catch(NumberFormatException e) {}
        NumberFormat nf2 = NumberFormat.getInstance(Locale.ENGLISH);
        ((DecimalFormat)nf2).applyPattern("$ ###,###.###");
         s.replace(0, s.length(), nf2.format(s1));

         isEdiging = false;