Good use of a try-catch

best_catch_ever.java

try
{
   // Some code that can fail 
}
catch(NumberFormatException e)
{
    Log.v(TAG, "User entered invalid data: carbs - " + carbsString + " fiberString - " + fiberString);

    // I feel dirty for this hack
    mCarbsAmountEditText.removeTextChangedListener(mCarbsTextWatcher);
    mCarbsAmountEditText.setText("");
    mCarbsAmountEditText.addTextChangedListener(mCarbsTextWatcher);

    mFiberAmountEditText.removeTextChangedListener(mFiberTextWatcher);
    mFiberAmountEditText.setText("");
    mFiberAmountEditText.addTextChangedListener(mFiberTextWatcher);

    updateNetCarbs();

    View toastLayout = getLayoutInflater().inflate(R.layout.toast_layout,
            (ViewGroup) findViewById(R.id.toast_layout_root));
    TextView text = (TextView)toastLayout.findViewById(R.id.toastTextView);
    text.setText(R.string.toastErrorMessage);

    Toast errorToast = new Toast(getApplicationContext());
    errorToas t.setGravity(Gravity.TOP, 0, 0);
    errorToast.setDuration(Toast.LENGTH_LONG);
    errorToast.setView(toastLayout);
    errorToast.show();
}