动态从下拉列表中更改基本 URL。

huangapple
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英文:

Change base url dynamically from spinner

问题

我在登录活动中有一个旋转器，其中包含URL列表。我想根据所选的URL动态更改基本URL。我该如何做呢？以下是我的Retrofit客户端：

  1. public class RetrofitClient {
  3.     private static Retrofit retrofit;
  5.     private static final String BASE_URL="Dynamically_URL";
  7.     public static Retrofit getRetrofitInstance(){
  9.         if(retrofit==null){
  11.             OkHttpClient okHttpClient = new OkHttpClient().newBuilder()
  12.                     .connectTimeout(25, TimeUnit.SECONDS)
  13.                     .readTimeout(25, TimeUnit.SECONDS)
  14.                     .writeTimeout(25, TimeUnit.SECONDS)
  15.                     .build();
  16.             retrofit= new retrofit2.Retrofit.Builder()
  17.                     .baseUrl(BASE_URL)
  18.                     .client(okHttpClient)
  19.                     .addConverterFactory(GsonConverterFactory.create())
  20.                     .build();
  21.         }
  22.         return retrofit;
  23.     }
  24. }
英文:

I've got spinner in my login activity with url list. I would like to change base url dynamically, based on selected url. How can i do it? Below is my Retrofit client:

  1. public class RetrofitClient {
  3. private static Retrofit retrofit;
  5. private static final String BASE_URL="Dynamically_URL";
  8. public static Retrofit getRetrofitInstance(){
  10.     if(retrofit==null){
  12.         OkHttpClient okHttpClient = new OkHttpClient().newBuilder()
  13.                 .connectTimeout(25, TimeUnit.SECONDS)
  14.                 .readTimeout(25, TimeUnit.SECONDS)
  15.                 .writeTimeout(25, TimeUnit.SECONDS)
  16.                 .build();
  17.         retrofit= new retrofit2.Retrofit.Builder()
  18.                 .baseUrl(BASE_URL)
  19.                 .client(okHttpClient)
  20.                 .addConverterFactory(GsonConverterFactory.create())
  21.                 .build();
  22.     }
  23.     return retrofit;
  24. }
  26. }

答案1

得分: 1

  1. 首先，将您选择的旋转器项目保存到共享首选项中。
  3. spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
  4.     @Override
  5.     public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
  6.         SharedPreferences sharedPreferences = getSharedPreferences(Cons.PRIVATE_PREF, Context.MODE_PRIVATE);
  7.         sharedPreferences.edit().putString("url_selected", spinner.getSelectedItem().toString()).apply();
  8.     }
  9.     
  10.     @Override
  11.     public void onNothingSelected(AdapterView<?> parent) {}
  12. });
  14. 然后，在您的 Retrofit 客户端上调用保存在共享首选项中的 URL。
  16. public static Retrofit getRetrofitInstance(Context context) {
  17.     SharedPreferences sharedPreferences = context.getSharedPreferences(Cons.PRIVATE_PREF, Context.MODE_PRIVATE);
  18.     baseurl = sharedPreferences.getString("url_selected", "");
  20.     OkHttpClient okHttpClient = new OkHttpClient().newBuilder()
  21.             .connectTimeout(25, TimeUnit.SECONDS)
  22.             .readTimeout(25, TimeUnit.SECONDS)
  23.             .writeTimeout(25, TimeUnit.SECONDS)
  24.             .build();
  25.             
  26.     retrofit = new retrofit2.Retrofit.Builder()
  27.             .baseUrl(baseurl)
  28.             .client(okHttpClient)
  29.             .addConverterFactory(GsonConverterFactory.create())
  30.             .build();
  31.     
  32.     return retrofit;
  33. }
英文:

First save your selected spinner item to Shared Preferences

  1.   spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {           
  2.                @Override
  3.                public void onItemSelected(AdapterView&lt;?&gt; parent, View view, int position, long id) {
  4.                     SharedPreferences sharedPreferences = getSharedPreferences(Cons.PRIVATE_PREF, Context.MODE_PRIVATE);
  6.             sharedPreferences.edit().putString(&quot;url_selected&quot;, spinner.getSelectedItem().toString()).apply();
  7. }
  8.            @Override
  9.            public void onNothingSelected(AdapterView&lt;?&gt; parent){}
  11. });

Then call saved url on shared Preferences on your retrofit Client

  1. public static Retrofit getRetrofitInstance(Context context) {
  3. SharedPreferences sharedPreferences = context.getSharedPreferences(Cons.PRIVATE_PREF, Context.MODE_PRIVATE);
  5.   baseurl = sharedPreferences.getString(&quot;url_selected&quot;, &quot;&quot;);  
  7.         OkHttpClient okHttpClient = new OkHttpClient().newBuilder()
  8.                 .connectTimeout(25, TimeUnit.SECONDS)
  9.                 .readTimeout(25, TimeUnit.SECONDS)
  10.                 .writeTimeout(25, TimeUnit.SECONDS)
  11.                 .build();
  12.         retrofit= new retrofit2.Retrofit.Builder()
  13.                 .baseUrl(baseurl)
  14.                 .client(okHttpClient)
  15.                 .addConverterFactory(GsonConverterFactory.create())
  16.                 .build();
  17.     }
  18.     return retrofit;

huangapple
  • 本文由 发表于 2020年9月30日 18:01:23
  • 转载请务必保留本文链接：https://go.coder-hub.com/64135204.html
  • android
  • java
  • retrofit2
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