Retrieve data from server and send it to next activity

Question

I retrieve the data from server using php, I want send it to next activity

I already retrieve the id and name, How can I store it and send to next activity

This is my list view

private void loadIntoListView(String json) throws JSONException {
        JSONArray jsonArray = new JSONArray(json);
        String[] viewstudent= new String[jsonArray.length()];
        for (int i = 0; i < jsonArray.length(); i++) {
            JSONObject obj = jsonArray.getJSONObject(i);
            viewstudent[i] = obj.getString("id") + " " + obj.getString("name");

           //is here store it for send to next activity?

        }
        ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, viewstudent);
        lv.setAdapter(arrayAdapter);

lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {


               //I think here maybe send data to next activity
                
            }


        });

Have any simple way? Can give me some example?

Answer 1

You can parse data json by use Gson and create Java class from jsonschema2pojo.org.

To send data to next activiy, you can use Bundle.

Answer 2

You should use SharedPreferences to save simple data types like

String, Integer, Boolean, Long, Short, ...

To send data to another activity you use bundle.

• Shared Preferences To Store Data

1. To get shared preferences:

SharedPreferences prefs = this.getSharedPreferences("com.example.app", Context.MODE_PRIVATE);

2. Store data to Shared Preferences:

prefs.edit().putLong("Id_KEY", myUserId).apply();

3. To read data from Shared Preferences

int userId = prefs.getInt("Id_KEY", -1);

• Bundles to send data to another activity

1. Send data to SecondActivity from FirstActivity

Intent intent = new Intent(getApplicationContext(), SecondActivity.class);
        intent.putExtra("ACTIVITY_ID_KEY", myUserId);
        startActivity(intent
    );

2. Receive Data from FirstActivity:

overide void onCreate(...) {
   ...
   Intent intent = getIntent();
   String userId = intent.getStringExtra("ACTIVITY_ID_KEY", -1);
   ...
}