Rounds to 2 decimal places and via TextView… here is a solution to the problem.
Rounds to 2 decimal places and via TextView
Wanted to make a generic division app just to test something because I’m new to everything. I get the final number, I just don’t know how or where to apply NumberFormat or DecimalFormat or how to use Math.Round correctly, so I only get 2 decimal places. I would want to spit any number back into the TextView.
final Button button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
thing1 = (EditText) findViewById(R.id.thing1);
if (TextUtils.isEmpty(thing1.getText().toString())) {
n1 = 0; }
else {
n1 = Integer.parseInt(thing1.getText().toString());
}
thing2 = (EditText) findViewById(R.id.thing2);
if (TextUtils.isEmpty(thing2.getText().toString())) {
n2 = 0; }
else {
n2 = Integer.parseInt(thing2.getText().toString());
}
if (n2 !=0){
total = (n1 / n2); }
final double total = ((double)n1/(double)n2);
final TextView result= (TextView) findViewById(R.id.result);
result.setText(Double.toString(total));
}
});
}
Solution
Try using the String.format() method, which creates a string and rounds that number (up or down) to two decimal places.
String foo = String.format("%.2f", total);
result.setText(foo);