具有 JSON 的自动完成文本视图

Question

我正在尝试将 AutoCompleteTextView 与 Json 一起使用，我正在使用本教程：this

我尝试向列表添加数据时遇到问题：foreach 不适用于类型 'com.example.program.model.Result'。下面是 AutoCompleteTextView 的模型数据和代码，我为示例模型添加了代码。

 private void DownloadGames() {

    final AlertDialog alertDialog = new SpotsDialog.Builder()
            .setContext(MainActivity.this)
            .setTheme(R.style.CustomDialog)
            .build();
    alertDialog.setMessage("Loading Data... Please wait...");
    alertDialog.setCancelable(true);
    alertDialog.show();

    Retrofit retrofit = GamesClient.getRetrofitClient();

    GamesInterface gamesInterface = retrofit.create(GamesInterface.class);

    Call call = gamesInterface.getGamesbyName(gameTitle.getText().toString(), SPINNER_POSITION);

    call.enqueue(new Callback() {
        @Override
        public void onResponse(Call call, Response response) {

            if (response.isSuccessful()) {
                alertDialog.dismiss();

                if (response.body() != null) {

                    Example example = (Example) response.body();

                   List<String> strings= new ArrayList<String>();

                    for(Result result: ((Example) response.body()).getResult()){
                        strings.add(result.getTitle());
                    }
                    ArrayAdapter<String> adapteo = new ArrayAdapter<String>(getBaseContext(),
                            android.R.layout.simple_dropdown_item_1line, strings.toArray(new String[0]));
                    storeTV.setAdapter(adapteo);


                    contentTitle.setText(example.getResult().getReleaseDate());

                  ...
}

型号

public class Result {

    @SerializedName("title")
    @Expose
    private String title;

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }
}

public class Example {

@SerializedName("result")
@Expose
private Result result;


public Result getResult() {
    return result;
}

public void setResult(Result result) {
    this.result = result;
}

}

Answer 1

您期望对象列表，但在 示例 class 中观察到单个对象。如果您的 API 抛出结果列表，则将示例 class 更改为

public class Example {

     @SerializedName("result")
      @Expose
      private List<Result> result;

      public List<Result> getResult() {
        return result;
      } 

      public void setResult(List<Result> result) {
        this.result = result;
      }

     }

并更改此行

for(Result result: ((Example) response.body()).getResult()){
                        strings.add(result.getTitle());
                    }

和

 for(Result result: example.getResult()){
                        strings.add(result.getTitle());
                    }

具有 JSON 的自动完成文本视图

AutoCompleteTextView with JSON

android

autocompletetextview