Question

我正在尝试使用从JSON网址读取的数据填充对象。

    public JSONHandler(final ImageButton canli, final ImageButton indie, final ImageButton easy, final ImageButton karisik, final ImageButton rock) {
    request = new JsonObjectRequest(Request.Method.GET, url, null,
            new Response.Listener<JSONObject>() {
                @Override
                public void onResponse(JSONObject response) {
                    try {
                        channelObject = response.getJSONObject("channel0");
                        song = channelObject.getString("song");
                        artist = channelObject.getString("artist");
                        duration = channelObject.getInt("duration");
                        playedAt = channelObject.getInt("playedat");
                        channelImg = channelObject.getString("image_extralarge");
                        channel0 = new Channel(song, artist, duration, playedAt, channelImg);
                        Picasso.get().load(channel1.getImg()).fit().into(indie);

我正在使用此结构填充ImageButton和其他东西。如您所见，我只能在方法内部填充按钮等。是否可以在我的方法中使用channel1对象并保存以供以后使用？

Answer 1

您可以将每个字段保存到sharedPreference，也可以：

将此添加到gradle文件中，

实现'com.google.code.gson：gson：2.8.5'

放置数据：

SharedPreferences prefs = getSharedPreferences("myPrefs", MODE_PRIVATE);
SharedPreferences.Editor editor = prefs.edit();
Gson gson = new Gson();
String res = gson.toJson(channel0);
editor.putString("data", res);
editor.apply();

获取数据：

SharedPreferences prefs = getSharedPreferences("myPrefs", MODE_PRIVATE);
Gson gson = new Gson();
String data = prefs.getString("data", "");
Channel obj = gson.fromJson(data, Channel.class);

JSONObjectRequest无法用数据填充对象

1 个答案: