Question

我现在正试图用离子（https://github.com/koush/ion）获取json数组但我收到错误：未处理的异常：org.json.JSONException：（

我的json：

[{"title":"Hello world","text":"This is the text"}]

我的代码：

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

        Ion.with(MyActivity.this)
                .load(getString(R.string.json_url))
                .asJsonArray()
                .setCallback(new FutureCallback<JSONArray>() {
                    @Override
                    public void onCompleted(Exception e, JSONArray result) {
                        if (e != null) {
                            Toast.makeText(MyJson.this, "Error loading strings", Toast.LENGTH_LONG).show();
                            return;
                        }
                        JSONObject c = result.getJSONObject(0);
                        if (c.has("title")) title = c.getString("title");
                        if (c.has("text")) text = c.getString("text");


                    }
                });

    }

有人可以告诉我，我做错了吗？：（

修改

Error:(48, 17) error: method setCallback in interface Future<T> cannot be applied to given types;
required: FutureCallback<JsonArray>
found: <anonymous FutureCallback<JSONArray>>
reason: actual argument <anonymous FutureCallback<JSONArray>> cannot be converted to FutureCallback<JsonArray> by method invocation conversion
where T is a type-variable:
T extends Object declared in interface Future

Answer 1

我解决了问题：）

我将 JSONArray （org.json.JSONArray）更改为： JsonArray （com.google.gson.JsonArray）

我补充说：

JsonObject c = result.get(0).getAsJsonObject();

这是现在的代码：

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

        Ion.with(MyActivity.this)
                .load(getString(R.string.json_url))
                .asJsonArray()
                .setCallback(new FutureCallback<JsonArray>() {
                    @Override
                    public void onCompleted(Exception e, JsonArray result) {
                        if (e != null) {
                            Toast.makeText(MyJson.this, "Error loading strings", Toast.LENGTH_LONG).show();
                            return;
                        }
                        JsonObject c = result.get(0).getAsJsonObject();
                        if (c.has("title")) title = c.get("title").getAsString();
                        if (c.has("text")) text = c.get("text").getAsString();


                    }
                });

    }

这解决了这个问题！

Android Unhandled异常：带有ion的org.json.JSONException

1 个答案: