android - 具有键值对的微调器

Question

我正在研究多语言用户界面。我的要求是在微调器中我想用印地语显示数据但是当它被选中时它应该返回英语显示它可以与进一步的决策进行比较。就像带标签的标签一样。

我的java代码是这样的

    HashMap<String,String> options=new HashMap<String,String>();
    String optionsEnglish [] = getResources().getStringArray(R.array.option_array);
    String optinsHindi[]= getResources().getStringArray(R.array.option_array_hindi);

    for(int i=0;i<optionsEnglish.length;i++)
    {
        options.put(optionsEnglish[i], optinsHindi[i]);
    }
    Spinner optionSpinner = (Spinner) findViewById(R.id.optionPicker);


    ArrayAdapter<HashMap<String, String>> dataAdapter = new ArrayAdapter<HashMap<String,String>>(this, android.R.layout.simple_spinner_item);
    dataAdapter.add(options);


    dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    optionSpinner.setAdapter(dataAdapter);

在 xml 中

    <resource>       
            <string-array name="option_array">
                  <item>Market</item>
                  <item>Commodity</item>
            </string-array>

            <string-array name="option_array_hindi">
                  <item>बाजार</item>
                  <item>वस्तु</item>


            </string-array>

     </resources>

Answer 1

第 1 步:创建将处理键和值的 POJO 类

  public class Country {
      private String id;
      private String name;
      public Country(String id, String name) {
      this.id = id;
      this.name = name;
     }


    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }


    //to display object as a string in spinner
    @Override
    public String toString() {
        return name;
    }

    @Override
    public boolean equals(Object obj) {
        if(obj instanceof Country){
            Country c = (Country )obj;
            if(c.getName().equals(name) && c.getId()==id ) return true;
        }

        return false;
    }

  }

第 2 步:准备要在微调器中加载的数据

private void setData() {

        ArrayList<Country> countryList = new ArrayList<>();
        //Add countries

        countryList.add(new Country("1", "India"));
        countryList.add(new Country("2", "USA"));
        countryList.add(new Country("3", "China"));
        countryList.add(new Country("4", "UK"));

        //fill data in spinner 
        ArrayAdapter<Country> adapter = new ArrayAdapter<Country>(context, android.R.layout.simple_spinner_dropdown_item, countryList);
        sp_country.setAdapter(adapter);
        sp_country.setSelection(adapter.getPosition(myItem));//Optional to set the selected item.    
    }

第三步:最后在spinner的onitemselected监听器方法中获取选中item的key和value

sp_country.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

                 Country country = (Country) parent.getSelectedItem();
                 Toast.makeText(context, "Country ID: "+country.getId()+",  Country Name : "+country.getName(), Toast.LENGTH_SHORT).show();    
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {    
            }
        });