Question

抱歉，这个问题可能很愚蠢，我是Java，Android Studio和所有相关工具的新手。我正在尝试使用DarkSkyApi在Android Studio 3.2.1上为Android实现一个简单的天气预报应用程序。我设法通过HttpsURLConnection，StringBuilder从DarkSky的服务器获取数据和BufferedReader。但是，当我尝试创建新的JSONObject（.toString（））时，它仅返回null。进一步的调查使我找到了.toString（）-> JSONObject.java-> JSONStringer，其中Android Studio“无法访问org.json.JSONStringer.Scope”，这似乎是导致.toString（）失败的原因。我确实添加了JSON-Library，除了JSONStringer之外，所有与JSON相关的功能似乎都可以使用。进口货对我来说也不错。这是故障代码：

public class JSONStringer {

/** The output data, containing at most one top-level array or object. */
final StringBuilder out = new StringBuilder();

/**
 * Lexical scoping elements within this stringer, necessary to insert the
 * appropriate separator characters (ie. commas and colons) and to detect
 * nesting errors.
 */

枚举范围{

    /**
     * An array with no elements requires no separators or newlines before
     * it is closed.
     */
    EMPTY_ARRAY,

    /**
     * A array with at least one value requires a comma and newline before
     * the next element.
     */
    NONEMPTY_ARRAY,

    /**
     * An object with no keys or values requires no separators or newlines
     * before it is closed.
     */
    EMPTY_OBJECT,

    /**
     * An object whose most recent element is a key. The next element must
     * be a value.
     */
    DANGLING_KEY,

    /**
     * An object with at least one name/value pair requires a comma and
     * newline before the next element.
     */
    NONEMPTY_OBJECT,

    /**
     * A special bracketless array needed by JSONStringer.join() and
     * JSONObject.quote() only. Not used for JSON encoding.
     */
    NULL,
}

由于我没有在JSONStringer.java中进行任何更改，因此我怀疑该错误可能是由于缺少依赖项或导入或其他内容引起的，但我无法弄清楚。

这是我得到空对象的地方

if (responceCode == HttpURLConnection.HTTP_OK)
        {
            Log.i(TAG, "CONNECTION:::" + connection.getInputStream());

            BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));

            Log.i(TAG, "url:::");
            StringBuilder arg = new StringBuilder(1024);
            String tmp="1";
            while(tmp !=null) {
                tmp = reader.readLine();
                arg.append(tmp).append("\n");
            }
            reader.close();
            Log.i(TAG, "Data: " + arg.toString());


            return new JSONObject(arg.toString());
        }
        else{
            return null;
        }

Log.i（TAG，“ Data：” + arg.toString（））;可以正常工作，并记录数据字符串。您是否需要其他解决方案？预先感谢

Answer 1

尝试一下：

JsonObject output = Json.createObjectBuilder()
     .add("data", arg.toString())
     .build();

return output;

Android Studio 3.2.1上的“无法访问org.json.JSONStringer.Scope”

1 个答案: