How to update text from recyclerview adapter to other layout xml

Question

I have ActivityCheckout.java an adapter AdapterServiceCourier inside activity. The adapter class is for showing radio-button price. How can I update textview with the view that is in ActivityCheckout. like

public TextView getTextViewPriceOngkir()
{

    TextView txtView = (TextView)findViewById(R.id.price_ongkir);
    return txtView;
}

when I used in adapter AdapterServiceCourier:

ActivityCheckout ac = new ActivityCheckout();
            TextView tv = ac.getTextViewPriceOngkir();
            tv.setText("8");

its error like:

E/UncaughtException: android.view.InflateException: Binary XML file line #9: Binary XML file line #9: Error inflating class <unknown>

AdapterServiceCourier.java :

@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
    SharedPreferences sharedPreferences = context.getSharedPreferences(AppConfig.APP_PUPUKKUJANG_MART, Context.MODE_PRIVATE);
    final String whois = sharedPreferences.getString(AppConfig.USER_WHOIS,null);
    row_index = -1;
    holder.itemView.setTag(service.get(position));
    final ServiceCourier p = service.get(position);
    holder.service.setText(p.getService());
    holder.desc.setText(p.getDescription());
    holder.cost.setText(p.getCost());
    holder.etd.setText(p.getEtd());
    holder.itemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

        }
    });
    View.OnClickListener rbClick = new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            RadioButton checked_rb = (RadioButton) v;
            if(lastCheckedRB != null){
                lastCheckedRB.setChecked(false);
            }
            lastCheckedRB = checked_rb;
            SharedPreferences sharedPreferences = context.getSharedPreferences(AppConfig.APP_PUPUKKUJANG_MART, Context.MODE_PRIVATE);
            SharedPreferences.Editor editor = sharedPreferences.edit();
            editor.putString("ongkir_service", p.getService());
            editor.putString("ongkir_description", p.getDescription());
            editor.putString("ongkir_cost", p.getCost());
            editor.putString("ongkir_etd", p.getEtd());
            editor.apply();

            ActivityCheckout ac = new ActivityCheckout();
            TextView tv = ac.getTextViewPriceOngkir();
            tv.setText("8");
        }
    };
    holder.radiobutton.setOnClickListener(rbClick);
}

Display: image click radio button, price must set to ongkir price enter image description here

[You cannot just create objects of Activities by using:](https://stackoverflow.com/questions/14956018/can-i-create-the-object-of-a-activity-in-other-class)`ActivityCheckout ac = new ActivityCheckout();` — AskNilesh, Sep 10 '18 at 04:23
You are setting text into TextView class which is not attached in your xml layout. — aslamhossin, Sep 10 '18 at 04:23
You can not new activity like this, the OS will create each activity. you should pass a reference of your activity to your adapter and put text in that textview — Shayan Tabatabaee, Sep 10 '18 at 04:24
specify that when u want to update textView i mean when radio button selected — Ashvin solanki, Sep 10 '18 at 04:39
@this where u initialized the adapter i mean in Activity checkout ? — Ashvin solanki, Sep 10 '18 at 05:03
@Ashvinsolanki yes i initialize the adapter in avtivity checkout — willy, Sep 10 '18 at 06:42
@willy and textView which u want to update is in this activity — Ashvin solanki, Sep 10 '18 at 06:42

score 1 · Answer 1 · edited Sep 10 '18 at 05:13

1

this is observable design pattern :

your activity should implements Observer interface
your adapter should extend Observable class
you should add your activity to your adapter
with notiftyObserver method you can update your activity

please note with this design pattern you can notify multiple activity.

edited Sep 10 '18 at 05:13

devgun

1,003
13
33

answered Sep 10 '18 at 04:34

Shayan Tabatabaee

448
4
14

PRATEEK BHARDWAJ · Answer 2 · 2018-09-10T04:40:19.507

0

YourAdapter instance = new YourAdapter(context,arrayList,textView);

Now in constructor of adapter you can get access to that textview.

YourAdpater.java

TextView textView;
YourAdapter(Context context,Arraylist<ModelClass> arraylist,TextView textView)
{
this.textView = textView;
}

Now in adapter you can update textview values.

edited Sep 10 '18 at 04:40

answered Sep 10 '18 at 04:24

PRATEEK BHARDWAJ

2,364
2
21
35

score 0 · Accepted Answer · answered Sep 10 '18 at 06:50

In Your Adapter Class OnClick RadioButton

View.OnClickListener rbClick = new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        RadioButton checked_rb = (RadioButton) v;
        if(lastCheckedRB != null){
            lastCheckedRB.setChecked(false);
        }
        .....
        .....
        //Create Statis Mathod in ActivityCheckout and Access Hear
         ActivityCheckout.updateTextView(String DataUWantToAdd);
    }
};

And In Yout ActivityCheckout Class

add static Mathod Dont miss That

class ActivityCheckout
{
 .....
  //on create and etc
  public static void updateTextView(String DataUWantToUpadate)
  {
    yourTextViewObject.setText(DataUWantToUpdate);
  }

}

score 0 · Answer 4 · answered Sep 10 '18 at 07:02

0

You can access Activity's method into adapter using context.Make one method with string parameter in activity which set string to your textview and call that method in your adapter when you want to change the text.

answered Sep 10 '18 at 07:02

vishva kapadia

104
5

How to update text from recyclerview adapter to other layout xml

4 Answers4