I am new in Android development, I want to bind a Json array to android AutocompleteTextView in Form (Registration form).
the Json array is showed in below
{"Status":true,"errorType":null,"InstituteList":[{"InstituteID":"1","InstituteName":"Demo Institute"},{"InstituteID":"16","InstituteName":"Sheridan College"},{"InstituteID":"17","InstituteName":"iCent Prosp"},{"InstituteID":"18","InstituteName":"Seneca College"}]}
here the Type Institution Name is the auto completeTextView. The main requirement is that, I can bind the values like in the Json response InstituteName on the front end and When click on the Submit Button it needs to take the InstituteID Object.
Currently I can bind the InstituteName Object to AutocompleteTextView and Working fine.
But the Submit Action was not performing perfectly.
I cant getting the InstituteID in my codes for performing
Here is my code.
Getting response from web service as json array and binding in asyncTask.
@Override
protected void onPostExecute(String res) {
try
{
Log.i("Intitute List",res);
JSONObject responseObject = new JSONObject(res);
String status=responseObject.getString("Status");
ArrayList<String> listInstituteNames = new ArrayList<>();
JSONArray detailsArray = responseObject.getJSONArray("InstituteList");
for (int i = 0; i <detailsArray.length() ; i++) {
JSONObject obj = detailsArray.getJSONObject(i);
listInstituteNames.add(obj.getString("InstituteName"));
}
//Log.i("InstituteName", String.valueOf(listInstituteNames));
myStringArray = listInstituteNames;
AutoCompleteAdapter adapter = new AutoCompleteAdapter(SignUpActivity.this, android.R.layout.simple_dropdown_item_1line, android.R.id.text1, listInstituteNames);
autoTextView.setThreshold(1);
autoTextView.setAdapter(adapter);
}
catch (JSONException e1) {
e1.printStackTrace();
}
AutoCompleteAdapter.java
package Adapter;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Filter;
import android.widget.Filterable;
public class AutoCompleteAdapter extends ArrayAdapter<String> implements Filterable {
private ArrayList<String> fullList;
private ArrayList<String> mOriginalValues;
private ArrayFilter mFilter;
public AutoCompleteAdapter(Context context, int resource, int textViewResourceId, List<String> objects) {
super(context, resource, textViewResourceId, objects);
fullList = (ArrayList<String>) objects;
mOriginalValues = new ArrayList<String>(fullList);
}
@Override
public int getCount() {
return fullList.size();
}
@Override
public String getItem(int position) {
return fullList.get(position);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
return super.getView(position, convertView, parent);
}
@Override
public Filter getFilter() {
if (mFilter == null) {
mFilter = new ArrayFilter();
}
return mFilter;
}
private class ArrayFilter extends Filter {
private Object lock;
@Override
protected FilterResults performFiltering(CharSequence prefix) {
FilterResults results = new FilterResults();
if (mOriginalValues == null) {
synchronized (lock) {
mOriginalValues = new ArrayList<String>(fullList);
}
}
if (prefix == null || prefix.length() == 0) {
synchronized (lock) {
ArrayList<String> list = new ArrayList<String>(mOriginalValues);
results.values = list;
results.count = list.size();
}
} else {
final String prefixString = prefix.toString().toLowerCase();
ArrayList<String> values = mOriginalValues;
int count = values.size();
ArrayList<String> newValues = new ArrayList<String>(count);
for (int i = 0; i < count; i++) {
String item = values.get(i);
if (item.toLowerCase().contains(prefixString)) {
newValues.add(item);
}
}
results.values = newValues;
results.count = newValues.size();
}
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
if(results.values!=null){
fullList = (ArrayList<String>) results.values;
}else{
fullList = new ArrayList<String>();
}
if (results.count > 0) {
notifyDataSetChanged();
} else {
notifyDataSetInvalidated();
}
}
}
}
AutoCompleteTextView Section in XML File..
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:id="@+id/autoCompt"
android:orientation="vertical">
<AutoCompleteTextView
android:id="@+id/instname_field"
android:layout_width="match_parent"
android:hint="Type Institution Name"
android:paddingLeft="10dp"
android:textColor="#fff"
android:background="#b8d1e5"
android:layout_height="40dp"
android:textSize="20dp"
android:ems="10"/>
</LinearLayout>
How can I solve this Issue. Thanks.
You can see @blackBelt comment that is the right way to do that.
But here i am explain you another method which is easy to understand using Hashmap instead of Object class .
Then while clicking the item.
Do this: