Android-TQC102電費計算機

課程學習筆記

關於spinner運用

程式碼參考如下

package COM.TQC.GDD01;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Adapter;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.SpinnerAdapter;
import android.widget.TextView;
import android.widget.Toast;

public class GDD01 extends Activity
{
 protected TextView MyOutcome;
 protected int volt;
 protected int inputv = 110;
 
     
 @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        spinner();
        button();
        
    }
 
 
 private void spinner() {
  // TODO Auto-generated method stub
  
  Spinner Sp=(Spinner)findViewById(R.id.input_v);
  Sp.setOnItemSelectedListener(new
   Spinner.OnItemSelectedListener()
  {

   @Override
   public void onItemSelected(AdapterView arg0, View arg1,
     int arg2, long arg3) {
    // TODO Auto-generated method stub
    volt=arg0.getSelectedItemPosition();
    
    if(volt ==0) 
    {
     inputv=110;
    }
    else
    {
     inputv=220;
    }
   }

   @Override
   public void onNothingSelected(AdapterView arg0) {
    // TODO Auto-generated method stub
    
   }
   
  });
  
 }

 private void button() {
  // TODO Auto-generated method stub
  Button btn=(Button)findViewById(R.id.submit);
  btn.setOnClickListener(new Button.OnClickListener()
  {

   @Override
   public void onClick(View arg0) {
    // TODO Auto-generated method stub
    EditText fill_a=(EditText)findViewById(R.id.input_a);
    EditText fill_hr=(EditText)findViewById(R.id.input_hr);
    EditText fill_m=(EditText)findViewById(R.id.input_m);
    
    double inputa=Double.parseDouble(fill_a.getText().toString());
    double inputhr=Double.parseDouble(fill_hr.getText().toString());
    double inputm=Double.parseDouble(fill_m.getText().toString());
    
    double total_w= inputv * inputa;
    
    int total_m=(int) Math.round((total_w/1000)*(inputhr*30)*inputm);
    
    MyOutcome=(TextView)findViewById(R.id.respond);
    MyOutcome.setText("$"+total_m);
   }
   
  });
 }
}