如何整数值分配给基于项变量对Android微调选择？ [英] How to assign Integer Value to variable based on ITEM selected on the Android Spinner.?

问题描述

我已经设置了数组适配器为我的微调来显示成绩的下拉列表（A +，A，...等）。
所有我需要的是当用户选择，A +，对myApp应该把它理解为浮点值10，从而使A +（= 10）的值可以在一级方程式需要整数计算总成绩中。
对于例如，如果用户选择B +，我的应用程序应该理解成8.5，可在公式中使用。

I have set a Array Adapter for my Spinner to display a drop-down list of Grades (A+, A, ...etc). All I need is when the user selects, A+, myApp should understand it as float value 10, so that the Value of A+ (=10) can be used in Formula that needs integer to calculate the overall grade. for eg, if user select B+, my APP should understand as 8.5, which can be used in the formula.

基本上，我希望用户看到在纺纱的成绩，但我需要它的实际值进行计算。

Basically, I want the USERS to see the Grades on the spinners but I need the Actual values of it for Calculation.

我可以利用的纱厂项目的位置吗？
请显示一个例子，如何找回它。

Can I make use of POSITION of Items on the Spinners? Kindly show an example how to retrieve it.

我的字符串资源：

<?xml version="1.0" encoding="utf-8"?>
      <resources>
         </string-array>
          <string-array name="grade_list">
           <item>A+</item>
           <item>A</item>
          <item>A-</item>
          <item>B+</item>
          <item>B</item>
          <item>B-</item>
          <item>C+</item>
          <item>C</item>
          <item>C-</item>
          <item>D</item>
          <item>E</item>
          <item>U</item>
      </resources>

我的Java code

MY JAVA CODE

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;

public class CSEsem1 extends Activity implements OnClickListener{

Spinner cs1spin1;
Spinner cs1spin2;
Spinner cs1spin3;
Spinner cs1spin4;
Spinner cs1spin5;
Spinner cs1spin6;
Spinner cs1spin7;



protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);


    setContentView(R.layout.laycsesem1);
        ArrayAdapter<CharSequence> grade = ArrayAdapter.createFromResource(this,
    R.array.grade_list, android.R.layout.simple_spinner_item);
    grade.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    cs1spin1.setAdapter(sem_adapter);

            cs1spin1.setOnItemSelectedListener(this);

            @Override
      public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
        long arg3) {

          // Completely blank after this.

        }

我需要申请相同的所有纺纱厂。我有7个总在我的XML文件中。

I need to apply the same for all the spinners. I have 7 in total in my XML file.

这是我想到的是，由于我对纱厂项目可以被转换成字符串，我可以用一个开关（字符串），但Android是Java的1.5,1.6 ..和开关（串）下编译的方法是刊登在的Java 1.7。所以不能用这个。

A method which I thought of was, Since my ITEMS on the Spinners can be converted to String, I could have used a switch (String) but Android is compiled under Java 1.5,1.6 ..and switch(String) is a featured in Java 1.7. So cannot use this.

推荐答案

我建议你创建包含对象，如

I suggest you to create a custom adapter that holds objects like

public class Grade{
    String mLabel;
    Float mValue;
.......
}

看那个<一个href=\"http://stackoverflow.com/questions/6497871/create-adapter-to-fill-spinner-with-objects\">answer这<一个href=\"http://androidexample.com/Spinner_Basics_-_Android_Example/index.php?view=article_discription&aid=82&aaid=105\"相对=nofollow>例如。

所以定义对象的名单中的一员你的 Acticity / 片段。

之后，在 onItemSelected 带你通过一个给定的位置对象。

Look at that answer and this example.
So define that list of objects as a member of your Acticity/ Fragment.
After that in onItemSelected take you object by a given position.

这篇关于如何整数值分配给基于项变量对Android微调选择？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！