android - 如何从一个 Activity 向另一个 Activity 发送和接收 json 对象？

Question

我在从一个 Activity 向另一个 Activity 发送和接收 google json 对象时遇到了问题。

 List<Integer> selectedScamMediumIds = scamMediumHorizontalAdapter.getSelectedScamMediumIds();
 JsonObject scamData = new JsonObject();
 JsonArray scamMediumJsonArray = new JsonArray();

 for (Integer scamMediumId:selectedScamMediumIds) {
     JsonPrimitive jsonPrimitive = new JsonPrimitive(scamMediumId);
     scamMediumJsonArray.add(jsonPrimitive);
 }
 scamData.add("scam_medium_id",scamMediumJsonArray);
 scamData.addProperty("scam_category_id", scamCategoryId);
 scamData.addProperty("scam_sub_category_id", scamSubCategoryId + "");
 scamData.addProperty("scammer_phone", phoneNumber.getText().toString());
 scamData.addProperty("scammer_location", scammerLocation.getText().toString());
 scamData.addProperty("lat", lattitude);
 scamData.addProperty("lng", longitude);

 Intent intent = new Intent(ScamLookUpActivity.this, ScamSearchActivity.class);
 intent.putExtra("scamDatas", scamData.toString());
 intent.putExtra("scamSubCategoryText", subCategoryTitle);
 startActivity(intent);

上面的方法我试过了，不知道对不对。请帮助我如何从一个 Activity 向另一个 Activity 发送和接收 json 对象。

Answer 1

你的做法是正确的。要在另一个 Activity 中获取它，您可以按照以下步骤进行

if (getIntent().getExtras() != null) {
                String scamDatas = getIntent().getStringExtra("scamDatas");
                String scamSubCategoryText  = getIntent().getStringExtra("scamSubCategoryText");
                try {
                  JsonParser parser = new JsonParser(); 
                  JsonObject scamDataJsonObject = parser.parse(scamDatas).getAsJsonObject(); 
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }