Live community .. I was trying to develop an android application that receives JSON data, and wanted to re-take advantage of some of that specific JSON data to add to an Android listView.
I started by creating a layout called activity_list_services.xml. And I created a listview and a textview that I used just for testing ..
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.obscu.gestrepair5.ListServices">
<ListView
android:id="@+id/lstService"
android:layout_width="368dp"
android:layout_height="495dp"
tools:layout_editor_absoluteX="-190dp"
tools:layout_editor_absoluteY="-21dp" />
<TextView
android:id="@+id/typeService2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"
tools:layout_editor_absoluteX="197dp"
tools:layout_editor_absoluteY="270dp" />
</android.support.constraint.ConstraintLayout>
In the corresponding Activity I have the ListServices where I have an IP that can fetch the content without problems.
Even the arraylist service data is storing all the content I want successfully. But I'm not able to present this content in the Android ListView.
public class ListServices extends AppCompatActivity {
RequestQueue rq;
String name;
TextView typeService;
Ip ip = new Ip();
String url= ip.stIp()+"/service";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list_services);
rq = Volley.newRequestQueue(this);
//sendjsonrequest();
populateListView();
typeService = (TextView) findViewById(R.id.typeService2);
}
private void populateListView(){
final ArrayList<String> servicedata = new ArrayList<String>();
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
JSONArray jsonArray = null;
try {
jsonArray = response.getJSONArray("data");
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = (JSONObject) jsonArray.get(i);
name = jsonObject.getString("nameService");
typeService.setText(name);
servicedata.add(name);
Log.i(String.valueOf(servicedata), "onResponse: ");
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
typeService.setText("Ups, ocorreu um erro");
}
});
rq.add(jsonObjectRequest);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.activity_list_services, servicedata);
ListView list = (ListView) findViewById(R.id.lstService);
list.setAdapter(adapter);
}
}
Any tips? Cumps ..