mvc
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model:save resource
view:
controller
package com.demo.android.bmi;
import java.text.DecimalFormat;
import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.view.View.OnClickListener;
import android.view.View;
public class bmi extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViews();
setListeners();
}
private Button button_calc;
private EditText field_height;
private EditText field_weight;
private TextView view_result;
private TextView view_suggest;
private void findViews()
{
button_calc=(Button)findViewById(R.id.submit);
field_height=(EditText)findViewById(R.id.height);
field_weight=(EditText)findViewById(R.id.weight);
view_result =(TextView)findViewById(R.id.result);
view_suggest =(TextView)findViewById(R.id.suggest);
}
private void setListeners()
{
button_calc.setOnClickListener(calcBMI);
}
private OnClickListener calcBMI=new OnClickListener()
{
public void onClick(View v)
{
DecimalFormat nf=new DecimalFormat("0.00");
double height=Double.parseDouble(field_height.getText().toString())/100;
double weight=Double.parseDouble(field_weight.getText().toString());
double bmi=weight/(height*height);
view_result.setText("Your bmi is "+nf.format(bmi));
if(bmi>25)
view_suggest.setText(R.string.advice_heavy);
else if(bmi<20)
view_suggest.setText(R.string.advice_light);
else view_suggest.setText(R.string.advice_average);
}
};
}