How to force two digit after decimal

Question

I have the following TextView which displays $0.00 all the time unless any calculation is done after a button click and saved to this TextView.

        <TextView
            android:id="@+id/tvTotalAmount"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="$0.00"
            android:textStyle="bold"
            android:paddingTop="10dp"
            android:textColor="#00A21E"
            android:textSize="25dp"
            android:paddingLeft="30dp"
            android:layout_below="@id/tvTotal" />
            <EditText
                android:id="@+id/etToll"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:ems="10"
                android:inputType="numberDecimal" />
            <Button
                android:id="@+id/btnCalculate"
                android:background="@drawable/calcbutton"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Calculate"
                android:layout_gravity="right"
                android:textStyle="bold"
                android:textColor="#FFFFFF"
                android:shadowColor="#000000"
                android:shadowDx="1"
                android:shadowDy="1"
                android:shadowRadius="2"
                android:layout_alignParentRight="true" />

When I run the app, it displays $0.0 (this would work, except I am working with dollars and cents and I would like it to show two digit after decimal unless both digits are 00)

I am using SharedPreferences and here are my code within the app:

onCreate()

float totalTollAmount = 0;
    tollAmount = (EditText) mFrame2.findViewById(R.id.etToll); //where the amount is entered
    tollAmount.setFilters(new InputFilter[] {new DecimalFilter(6, 2)});
    tvTotalAmountLabel = (TextView) mFrame2.findViewById(R.id.tvTotalAmount); //holding total amount
    if (Float.toString(prefs.getFloat("dblTollAmount", 0)) != "0.0") {
        tollAmount.setText(Float.toString(prefs.getFloat("dblTollAmount", 0)));
    }
    tvTotalAmountLabel.setText("$" + Float.toString(prefs.getFloat("totalTollAmount", 0))); //retrieves the total toll amount and displays

btnCalc.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v) {
        strTollAmount = tollAmount.getText().toString();
        strInfName = nameOfInf.getText().toString();
        String k = "";
        if (strTollAmount.length() != 0 && strInfName.length() != 0) {
            float dblTollAmount = Float.parseFloat(strTollAmount);
            submitInfo(dblTollAmount);
        }
        Toast.makeText(getActivity(), k, Toast.LENGTH_SHORT).show();
    }
});

    private void submitInfo(float toll) {
        y = "TEST";
        if (y != null) {
            editor.putString("someId", y);
            totalTollAmount = round(toll + prefs.getFloat("totalTollAmount", 0));
            tvTotalAmountLabel.setText("$" + Float.toString(totalTollAmount));
            }
              else {
            editor.putString("someId", "");
        }
        editor.putString("previous-trip", y);
        editor.putFloat("totalTollAmount", round(totalTollAmount));
        //editor.commit(); removed on 8/3
        if (nameOfInf != null && nameOfInf.length() > 0) { // added on 8/3...
            //Clear out this value from Enter Data tab ONLY if Calculate happens
        }
        if (tollAmount != null && tollAmount.length() > 0) {
            //Clear out this value from the Enter Data tab ONLY if Calculate happens
        }
        editor.commit(); //added on 8/3
    }

private float round(float amount){
    return Float.parseFloat(new DecimalFormat("###.##").format(amount));
}

onDestroy method:

@Override
public void onDestroy(){
    super.onDestroy();
    Log.i("OnDestroy", "Logged");
    if(nameOfInf != null && nameOfInf.length() > 0) {
        editor.putString("strInfName", nameOfInf.getText().toString());
    }
    if(tollAmount != null && tollAmount.length() > 0) {
        editor.putFloat("dblTollAmount", Float.parseFloat(tollAmount.getText().toString()));
    }

    editor.commit();
}

What it's suppose to do: Each time I hit the calculate button the app should take what's on the EditText etToll and add to the value thats already on the TextView tvTotalAmount and it will continue to do so everytime.

Although the original value for the TextView is $0.00, it only shows $0.0. I would like to show two digit after the decimal on the EditText and TextView because I will be working with dollar and cent.

How can I fix the issue I am facing?

If the full code is needed, please let me know.

You've shown a lot of unnecessary code. Just google stuff like "decimal format TextView" or something. You'll find stuff like [this](http://stackoverflow.com/a/8590737/645270). And **never** use floats with currencies. Use BigDecimal or integer. See my link for more info on all of this. — keyser, Aug 08 '13 at 14:20
possible duplicate of [Format Float to n decimal places](http://stackoverflow.com/questions/5195837/format-float-to-n-decimal-places) — PW Kad, Aug 08 '13 at 14:25

kalyan pvs · Accepted Answer · 2014-04-09T10:22:40.317

4

use this in your code

DecimalFormat form = new DecimalFormat("0.00");
String FormattedText=form.format(your value);

set it to Edittext..it will work

edited Apr 09 '14 at 10:22

answered Aug 08 '13 at 14:30

kalyan pvs

14,486
4
41
59

My app FC with that code. I am guessing I have to redo the entire codes to match what I am looking to achieve. – Zahid H Aug 08 '13 at 14:48

How to force two digit after decimal

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