It is great to see that there is a group for Android beginners.
I am trying to get some experience with Android.
One of the things I have tried doing most of the day is call a class.
Currently, the program is doing fine with only one class, but it will
be great to move the calculation part to a separate class and then
return the results. This means that the lines from the code below
should be moved to a separate class;
// calculate the result
Time_from_start = 20;
Time_to_arrival = 2;
Arrival_time = Time_from_start+Tiime_to_arrival;
The working code looks like this:
package ti.igts.greenwave;
import android.app.Activity;
import android.os.Bundle;
import java.text.NumberFormat;
import ti.igts.greenwave.R;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class GreenWave extends Activity {
/** Called when the activity is first created. */
public float Time_from_start;
public float Time_to_arrival;
public float Arrival_time;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.welcomemain);
final TextView answerfield = (TextView)
findViewById(R.id.answer);
String answer = "";
NumberFormat nf = java.text.NumberFormat.getNumberInstance();
// calculate the result
Time_from_start = 20;
Time_to_arrival = 2;
Arrival_time = Time_from_start+Time_to_arrival;
answer = "Time of Arrival " + nf.format(Arrival_time);
// display the answer
answerfield.setText(answer);
}
}
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