How to send array of Hashmap from one activity to another activity in android

Question

I have a list view in Main activity, I have fill some values in it by using Array Adapter

String[] arr = new String[]{"Android ListView Item 1", "Android ListView Item 2",
        "Simple List View In Android", "List View onClick Event","Android List View OnItemClickListener",
        "Open New Activity When ListView item Clicked", "List View onClick Source Code", "List View Array Adapter Item Click",
};

Now I want to set onclickListener to each item of the list. I am requesting an api which gives me jsonresponse and I want to iterate over jsonresponse and send required data to another activity when click item of the list.

I tried with following:

ArrayAdapter<String> arrayadapter = new ArrayAdapter<String>(this, 
R.layout.activity_main2, R.id.textview, arr);

    listview.setAdapter(arrayadapter);

    listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View view,
                                int position, long id) {
            String textToPass = "hello";
            if (position == 0) {
                Bundle passData = new Bundle();
                passData.putString("data",textToPass);
                Intent myIntent = new Intent(view.getContext(), Main2Activity.class);

                myIntent.putExtras(passData);
                startActivity(myIntent);
              }
         }
    });
}

private String jsonParse(){

    String url = "//testing/api.php"; //get json response locally
    RequestQueue requestQueue = Volley.newRequestQueue(this);
    JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(url, null, new Response.Listener<JSONObject>() {
        @Override
        public void onResponse(JSONObject response) {
            JSONArray jsonArray = null;
            try {
                jsonArray = response.getJSONArray("Item");

                for(int i=0; i<=jsonArray.length();i++){

                    HashMap<String,String> dict = new HashMap<String,String>();

                    JSONObject tv = jsonArray.getJSONObject(i);
                    String sid;

                    dict.put("cid", tv.getString("sid") );

                   // String cid = tv.getString("sid");
                    String categoryName =tv.getString("category_name");
                    String baseUrl = "//testing/";
                    String imageUrl = baseUrl + tv.getString("category_image");


                    //textView.append(cid + "," + categoryName + "," + imageUrl + "\n\n");

                }

            } catch (JSONException e) {
                e.printStackTrace();
            }
            assert jsonArray != null;
            Log.d("Main",jsonArray.toString());

        }
    }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            Log.d(error.getMessage(), "utf-8");
        }
    });



    requestQueue.add(jsonObjectRequest);

Please help

You can use Event Bus for this. https://github.com/greenrobot/EventBus#eventbus-in-3-steps — Varad Mondkar, Aug 01 '18 at 08:21
@sontruongit, Yes want to create list of hashmaps then iterate over it and when user click on each element of listview then each element of list that is hashmap should display. — Pradeep, Aug 01 '18 at 08:30
Hi buddy you must change it to hashmap and then [Check this...](https://stackoverflow.com/a/11155142/9022125) — amirhosein, Aug 01 '18 at 08:40

score 1 · Answer 1 · answered Aug 01 '18 at 09:17

1

If I understood properly then I think you want to send HashMap dic to another activity. HashMap are serializable this means you can easily pass it in intent, moreover both key and value are string which are also serializable

intent.putExtra("dic.key", dic);

And in your next activity retrieve it with typecasting.. simple

HashMap<String, String> hashMap = (HashMap<String, String>) intent.getSerializableExtra("hashMap");

answered Aug 01 '18 at 09:17

Abubakar

1,022
10
20

Thanks to serializable ...dic not so dic :D – Abubakar Aug 01 '18 at 09:18

How to send array of Hashmap from one activity to another activity in android

1 Answers1