Android添加双号

-2

我想添加talkPrice，textPrice和dataPrice，并将总数显示在页面上的一个字段中，但我不知所措。任何帮助都会很棒。差不多基于什么选择它改变了双<name>Price匹配我只需要它加起来这里是我迄今为止Android添加双号

package com.bestbuymobile; 

import android.app.Activity; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemSelectedListener; 
import android.widget.ArrayAdapter; 
import android.widget.Spinner; 
import android.widget.TextView; 

public class att_ind extends Activity{ 
String debug = "ATT_IND"; 
Double talkPrice = 0.00; 
Double textPrice = 0.00; 
Double dataPrice = 0.00; 
Double totalPrice = 0.00; 

public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.att_ind_layout); 
     Log.d(debug,"Calling Talk_Plans Function"); 
     Talk_Plans(); 
     Log.d(debug,"Calling Text_Plans Function"); 
     Text_Plans(); 
     Log.d(debug,"Calling Data_Plans Function"); 
     Data_Plans(); 
} 
public void Talk_Plans() { 
    Log.d(debug,""); 
    Spinner talk = (Spinner) findViewById(R.id.att_ind_talk_spinner); 
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.att_ind_talk_plans, android.R.layout.simple_spinner_item); 
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
    talk.setAdapter(adapter); 
    talk.setOnItemSelectedListener(new Talk()); 
} 
public void Text_Plans() { 
    Log.d(debug,""); 
    Spinner text = (Spinner) findViewById(R.id.att_ind_text_spinner); 
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.att_ind_text_plans, android.R.layout.simple_spinner_item); 
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
    text.setAdapter(adapter); 
    text.setOnItemSelectedListener(new Text()); 
} 
public void Data_Plans() { 
    Log.d(debug,""); 
    Spinner data = (Spinner) findViewById(R.id.att_ind_data_spinner); 
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.att_ind_data_plans, android.R.layout.simple_spinner_item); 
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
    data.setAdapter(adapter); 
    data.setOnItemSelectedListener(new Data()); 
} 

class Talk implements OnItemSelectedListener { 
    public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) { 

     Log.d(debug,"Listening for Talk packages"); 
     if(parent.getItemAtPosition(pos).toString().equals("None")) { 
      Log.d(debug,"No talk package selected"); 
      textPrice = 0.00; 
     } 
     if(parent.getItemAtPosition(pos).toString().equals("450 Minutes")) { 
      Log.d(debug,"450 Minute package selected"); 
      textPrice = 39.99; 
     } 
     if(parent.getItemAtPosition(pos).toString().equals("900 Minutes")) { 
      Log.d(debug,"900 Minute package selected"); 
      textPrice = 59.99; 
     } 
     if(parent.getItemAtPosition(pos).toString().equals("Unlimited Minutes")) { 
      Log.d(debug,"Unlimited Minute package selected"); 
      textPrice = 69.99; 
     } 
    } 
    public void onNothingSelected(AdapterView<?> parent) { 

    } 
} 
class Text implements OnItemSelectedListener { 
    public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) { 
     Log.d(debug,"Listening for Text packages"); 
     if(parent.getItemAtPosition(pos).toString().equals("None")) { 
      Log.d(debug,"No messaging package selected"); 
      textPrice = 0.00; 
     } 
     if(parent.getItemAtPosition(pos).toString().equals("Unlimited")) { 
      Log.d(debug,"Unlimited Messaging package selected"); 
      textPrice = 20.00; 
     } 
    } 
    public void onNothingSelected(AdapterView<?> parent) { 

    } 
} 
class Data implements OnItemSelectedListener { 
    public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) { 
     Log.d(debug,"Listening for Data packages"); 
     if(parent.getItemAtPosition(pos).toString().equals("None")) { 
      Log.d(debug,"No data package selected"); 
      dataPrice = 0.00; 
     } 
     if(parent.getItemAtPosition(pos).toString().equals("300 MB")) { 
      Log.d(debug,"300MB data package selected"); 
      dataPrice = 20.00; 
     } 
     if(parent.getItemAtPosition(pos).toString().equals("3 GB")) { 
      Log.d(debug,"3GB data package selected"); 
      dataPrice = 30.00; 
     } 
     if(parent.getItemAtPosition(pos).toString().equals("5 GB")) { 
      Log.d(debug,"5GB data package selected"); 
      dataPrice = 50.00; 
     } 
    } 
    public void onNothingSelected(AdapterView<?> parent) { 

    } 
} 
}

来源

2012-02-15 ondrovic

* _DO not_ *使用双打金融工具。请。由奥丁的胡子。 – 2012-02-15 02:09:25

你有什么建议我使用？双原始？ – ondrovic 2012-02-15 02:17:15

使用['BigDecimal']（http://docs.oracle.com/javase/7/docs/api/java/math/BigDecimal.html）。请。 – 2012-02-15 02:33:50

你需要做一个TextView来显示它，并得到一个参考到你的TextView。

然后，你可以做这样的事情：

textView.setText(String.valueOf(var1 + var2 + var3 + etc...));

来源

2012-02-15 02:06:05 FoamyGuy

Android添加双号

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