如何使用GSON/REVERFIT获得对象数组？

Question

{
    items:[
        {"name":"foo"},
        {"name":"bar"}
    ]
}

public class AnItem {
    String name;
}

public class MyItems {
    List<AnItem> items;
}

public interface MyApi {
    @GET("/itemlist")
    Call<MyItems> loadItems();
}

public boolean onOptionsItemSelected(MenuItem item) {
    Retrofit retrofit = new Retrofit.Builder()
            .baseUrl("https://someurl.com/api")
            .addConverterFactory(GsonConverterFactory.create())
            .build();
    MyApi myApi = retrofit.create(MyApi.class);
    Call<MyApi> call = myApi.loadItems();
    call.enqueue(this);
    return true;
}

@Override
public void onResponse(Response<MyItems> response, Retrofit retrofit) {
    ArrayAdapter<AnItem> adapter = (ArrayAdapter<AnItem>) getListAdapter();
    adapter.clear();
    adapter.addAll(response.body().items);
}

[
    {"name":"foo"},
    {"name":"bar"}
]

我知道如何在不使用parsejson的情况下使用reverfit和迭代数组来获取对象，但我不能这样做，因为这部分是用reverfit和gson自动完成的。

我在这个问题上已经困了一段时间了，如果你能给我指点，我会非常感激的。

更新：

below are the parts i have changed MyItems to List<AnItem>:



public class AllTemplatesRetroActivity extends ListActivity implements Callback<List<AnItem>> {

protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
    requestWindowFeature(Window.FEATURE_PROGRESS);
    ArrayAdapter<AnItem> arrayAdapter =
            new ArrayAdapter<AnItem>(this,
                    android.R.layout.simple_list_item_1,
                    android.R.id.text1,
                    new ArrayList<AnItem>());
    setListAdapter(arrayAdapter);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    Retrofit retrofit = new Retrofit.Builder()
        .baseUrl("https://someurl.com/api")
        .addConverterFactory(GsonConverterFactory.create())
        .build();

    MyApi myApi = retrofit.create(MyApi.class);

    Call<List<AnItem>> call = myApi.loadItems();
    call.enqueue(this);
    return true;
}

@Override
public void onResponse(Response<List<AnItem>> response, Retrofit retrofit) {
    ArrayAdapter<AnItem> adapter = (ArrayAdapter<AnItem>) getListAdapter();
    adapter.clear();
    Log.i("##MYLOG###", "## response:"+ response.message());
    adapter.addAll(response.body());
}

Answer 1

要像这样处理json响应：

[
    {"name":"foo"},
    {"name":"bar"}
]

使用调用 >

在Reverfit2中，httpurl.resolve()用于解析baseUrl和带注释的路径。

.baseUrl("http://someurl.com")

@GET("/api/itemlist")    --> resolved to http://someurl.com/api/itemlist

.baseUrl("http://someurl.com/api/")

@GET("itemlist")    --->  resolved to http://someurl.com/api/itemlist

.baseUrl("http://someurl.com/api")

 @GET("/itemlist")   ---> resolved to http://someurl.com/itemlist