更改微調器基於另一個微調器選擇

Question

我有字符串數組，其中包含所有國家名稱和另一個字符串數組與各自的國家代碼。 我將國家名字符串設置爲微調。 當我從微調框中選擇項目時，其相應的國家代碼應該設置爲微調框。而且該項目也應該更改爲代碼。 同樣，如果我選擇另一個項目，它的代碼應該設置爲spinner和item。但我選擇的第一個應改爲原來的國名。 我該怎麼做？

XML

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:paddingBottom="@dimen/activity_vertical_margin" 
android:paddingLeft="@dimen/activity_horizontal_margin" 
android:paddingRight="@dimen/activity_horizontal_margin" 
android:paddingTop="@dimen/activity_vertical_margin" 
tools:context="com.example.temp.MainActivity" > 

<Spinner 
    android:id="@+id/spinnerCountry" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentTop="true" 
    android:layout_centerHorizontal="true" 
    android:layout_marginTop="124dp" /> 

    </RelativeLayout> 

Java代碼的

package com.example.temp; 

import android.app.Activity; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.widget.ArrayAdapter; 
import android.widget.Spinner; 

public class MainActivity extends Activity { 

    final String[] countries = new String[] {"Afghanistan(AF)", "Albania(AX)", 
               "Algeria(AL)", "American Samoa(DZ)", 
               "Andorra(AS)"}; 

    final String[] countrycodes = new String[]{"AF","AX","AL","DZ","AS"}; 

    Spinner spinnerCountry; 

    ArrayAdapter<String> arrayAdapter; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     spinnerCountry=(Spinner)findViewById(R.id.spinnerCountry); 

     arrayAdapter = new ArrayAdapter<String>(getApplicationContext(), 
             android.R.layout.simple_list_item_1,countries); 
     spinnerCountry.setAdapter(arrayAdapter); 
    } 
} 

我不能，因爲我在我的應用程序使用它分享我的原創。 但是，我分享與我原來的代碼相同的代碼。 我想在從微調器中選擇國家時設置相應的代碼。

Answer 1

String[] countries = {"INDIA","DUBAI","KSA"}; 
     String[] country_code = {"91","971","966"}; 

     final Spinner spinnerCountry = (Spinner)findViewById (R.id.spinnerCountry); 
     final Spinner spinnerCountryCode = (Spinner) findViewById (R.id.spinnerCountryCode); 

     ArrayAdapter<String> countryAdapter = new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1,countries); 

     ArrayAdapter<String> countryCodeAdapter = new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1,country_code); 

     spinnerCountry.setAdapter(countryAdapter); 
     spinnerCountryCode.setAdapter(countryCodeAdapter); 

     spinnerCountry.setOnItemSelectedListener(new OnItemSelectedListener() { 

      @Override 
      public void onItemSelected(AdapterView<?> arg0, View arg1,int position, long arg3) { 
       spinnerCountryCode.setSelection(position); 
      } 

      @Override 
      public void onNothingSelected(AdapterView<?> arg0) { 

      } 

     }); 

     spinnerCountryCode.setOnItemSelectedListener(new OnItemSelectedListener() { 

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

       spinnerCountry.setSelection(position); 
      } 

      @Override 
      public void onNothingSelected(AdapterView<?> arg0) { 

      } 

     }); 

下面是一些可能會解決您的問題的代碼。

說明：

假設你有兩個微調R.id.spinnerCountry和R.id.spinnerCountryCode。

正如你所看到的，我創建了兩個數組，分別包含countryName和countryCode。

工作流程： -

當我在微調中選擇一個項目，然後其他的微調負載與對應位置的其他項目。

該代碼是自解釋！

Answer 2

String businesstype_array [] = {「Retail」，「Vendor」，「Agriculture」};

public static final String JSON_STRING = "{\"Retail\":[\"General Stores\",\"Clothing\",\"Electronics\",\"Mobile Phones\"],\"Vendor\":[\"Gas agency\",\"newspaper\",\"vendor\",\"milk vendor\",\"laundry\"],\"Agriculture\":[\"lGas agency\",\"lnewspaper\",\"lvendor\",\"lmilk vendor\",\"llaundry\"]}"; 

ArrayAdapter adapter_business =新ArrayAdapter（getActivity（），R.layout.singlerow_businesstype_spinner，businesstype_array）; businesstype.setAdapter（adapter_business）; businesstype.setAdapter（adapter_business）;

businesstype.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 
     @Override 
     public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) { 

      Log.d("jsonntring", "out tryy"); 
      try { 
       Log.d("jsonntring", "in tryy"); 


       jsonObject = new JSONObject(JSON_STRING); 
       Log.d("jsonntring", jsonObject.toString() + "length==" + jsonObject.length()); 


       JSONArray jsonarray = jsonObject.getJSONArray(businesstype.getSelectedItem().toString()); 

       Log.d("jsonarray&", jsonarray.toString()); 

       businesstype__subtype.clear(); 
       for (int j = 0; j < jsonarray.length(); j++) { 
        String s = jsonarray.getString(j); 

        businesstype__subtype.add(s); 

        Log.d("jsonarray&", jsonarray.toString()); 

       } 

       ArrayAdapter adapter_sub_business = new ArrayAdapter(getActivity(), R.layout.singlerow_businesstype_spinner, businesstype__subtype); 
       business_subtype.setAdapter(adapter_sub_business); 

      } catch (JSONException e) 
      { 
       Log.d("jsonntring_exce", e.toString()); 

      } 


     } 

     @Override 
     public void onNothingSelected(AdapterView<?> adapterView) { 

     } 
    });