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我正在尝试使用Retrofit调用来从头中检索某个字段的值,以便将其用于发送回服务器。我成功地获得了try块中的值,并立即在try块中将其返回。但是当我在呼叫实例外尝试相同的时候,abc(这是我分配响应头的值的地方)的值会丢失。我已经将String abc声明为全局变量。如何保存字符串的值?如何在Retrofit调用中保存变量的值?
public class MainActivity extends AppCompatActivity {
private static final String LOG_TAG = "MainActivityClass";
String abc;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ApiInterface apiService = ApiClient.getClient().create(ApiInterface.class);
Call<List<TrendingModel>> call = apiService.getAllTodos();
call.enqueue(new Callback<List<TrendingModel>>() {
@Override
public void onResponse(Call<List<TrendingModel>> call, Response<List<TrendingModel>> response) {
try {
List<TrendingModel> todoModels = response.body(); // WHERE WE GET THE RESPONSE BODY
abc = response.headers().get("Tanand"); // WHERE WE GET THE RESPONSE HEADER AND ASSIGN IT TO abc, WHICH WE DECLARED GLOBALLY
ApiClient.getClient(abc).create(ApiInterface.class); // PASSING THE abc VARIABLE TO THE GETCLIENT(TOKEN) METHOD WITHIN
// THE SAME TRY BLOCK WHICH WORKDS
} catch (Exception e) {
Log.d("onResponse", "There is an error");
e.printStackTrace();
}
}
@Override
public void onFailure(Call<List<TrendingModel>> call, Throwable t) {
Log.d("onFailure", t.toString());
}
});
ApiClient.getClient(abc).create(ApiInterface.class); // VALUE OF abc IS NOT PERSISTED HERE (abc IS NULL) ALTHOUGH WE DECLARED IT GLOBALLY
}
}