try to display button with toast function in my ListView

Question

How to and where to add button with Toast function in my application.

I know many time this question is asked but still, I am confused so can anyone help.

[Text]

[Button 1] [Button 2]

[Text]

[Button 1][Button 2]

Here is my code :

public class EngineerRecycler extends AppCompatActivity {
String service_id,type, jsonStr;
String compticketid;
private String TAG = MainActivity.class.getSimpleName();
private ListView lv;

// URL to get contacts JSON
private static String urlpending = "http://localhost/players.php";

ArrayList<HashMap<String, String>> contactList;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate( savedInstanceState );
    setContentView( R.layout.activity_engineer_recycler );
    Bundle bundle = getIntent().getExtras();
    service_id = bundle.getString( "empid" );
    type = bundle.getString( "type" );
    contactList = new ArrayList<>();
    lv = (ListView) findViewById(R.id.list);
    new GetContacts().execute();
}

private class GetContacts extends AsyncTask<Void, Void, Void> {
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
    }
    @Override
    protected Void doInBackground(Void... arg0) {
        HttpHandler sh = new HttpHandler();

        // Making a request to URL and getting a response

            jsonStr = sh.makeServiceCall( urlpending, service_id );

        if (jsonStr != null) {
            try {
                JSONObject jsonObj = new JSONObject(jsonStr);

                // Getting JSON Array node
                JSONArray contacts = jsonObj.getJSONArray("contacts");

                // looping through All Contacts
                for (int i = 0; i < contacts.length(); i++) {
                    JSONObject c = contacts.getJSONObject(i);

                    String name = c.getString("ClientName");
                    String email = c.getString("comp_desc");


                    // tmp hash map for single contact
                    HashMap<String, String> contact = new HashMap<>();

                    // adding each child node to HashMap key => value
                    contact.put("ClientName", name);
                    contact.put("comp_desc", email);

                    // adding contact to contact list
                    contactList.add(contact);
                }
            } catch (final JSONException e) {
                Log.e(TAG, "Json parsing error: " + e.getMessage());
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(getApplicationContext(),
                                "Json parsing error: " + e.getMessage(),
                                Toast.LENGTH_LONG)
                                .show();
                    }
                });

            }
        } else {
            Log.e(TAG, "Couldn't get json from server.");
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    Toast.makeText(getApplicationContext(),
                            "Couldn't get json from server. Check LogCat for possible errors!",
                            Toast.LENGTH_LONG)
                            .show();
                }
            });

        }

        return null;
    }

    @Override
    protected void onPostExecute(Void result) {
        super.onPostExecute(result);



            ListAdapter adapter = new SimpleAdapter(
                    EngineerRecycler.this, contactList,
                    R.layout.list_pending, new String[]{"ClientName", "comp_desc"}, new int[]{R.id.name,
                    R.id.email);

            lv.setAdapter( adapter );

        }
    }
    }
}

I am able to display the items in listview but when now I want to add button to it.

that too whenever I click on it toast message should pop.

Here is XML file

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
    android:id="@+id/name"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" />
  <LinearLayout
    android:layout_width="351dp"
    android:layout_height="match_parent"
    android:orientation="horizontal">
    <Button
        android:id="@+id/getenter"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="Reached" />
</LinearLayout>

You want a button as separate item. Or you want button make visible in existing item? — Khemraj Sharma, Sep 10 '18 at 07:18
you need to create a custom row (xml file) and design it as you like (Text + Button) and apply it to your Listview... there are many examples in the internet on how to do that. — user 007, Sep 10 '18 at 07:22
You can create CustomAdapter for it and use RecyclerView intsead of ListView. — Paras Verma, Sep 10 '18 at 07:22
On internet i am not getting it exactly what should i do and I am new to android studio so that a problem - @user007 — nikhil lohar, Sep 10 '18 at 07:24
Can you tell what exact changes should i make in current code - @ParasVerma — nikhil lohar, Sep 10 '18 at 07:25
Already you have the button in layout so buttons not visible or you need click functionality for buttons. — Mohamed Mohaideen AH, Sep 10 '18 at 07:53
Exactly i need click function for buttons - @MohamedMohaideenAH — nikhil lohar, Sep 10 '18 at 07:53
Is my own class and can you please tell me what exactly I have to do - @MohamedMohaideenAH — nikhil lohar, Sep 10 '18 at 07:56
You see i am new to coding so can you tell how to do it - @MohamedMohaideenAH — nikhil lohar, Sep 10 '18 at 07:59
Thats my updated code only In this file i have done all this things except the connection part - @MohamedMohaideenAH — nikhil lohar, Sep 10 '18 at 08:02
This is what am asking SimpleAdapter is android class. So you can override listview setonitemclicklistener method. Check my answer. — Mohamed Mohaideen AH, Sep 10 '18 at 08:03

score 0 · Answer 1 · answered Sep 10 '18 at 07:28

welcome to Stackoverflow.

After knowing about your requirement. Here is the solution.

First take a boolean in your model class.

class Model {
  boolean buttonVisible;
  // settter getter
}

Now attach this boolean value to your button visibility in your adapter getView().

holder.button.setVisibility(model.isButtonVisible() ? View.VISIBLE : View.GONE);

Now when you want to change a button visible. Just change this boolean and notify list for data change.

yourList.get(2).setButtonVisible(true);
((BaseAdapter) listView.getAdapter()).notifyDataSetChanged();

This will make the 2 index button visible. If you are confused anywhere, please ask me.

This answer is related to your question. Just the difference is- In this answer this guy is attaching CheckBox to Model. And you will attach visibility to Mode.

Suggestion

Use RecyclerView, because that has lot of performance considering feature.

Like notifyItemDataChanged() to notify only item which is changed, whether in ListView all the items would be nofified.

Mohamed Mohaideen AH · Accepted Answer · 2018-09-10T08:11:01.093

0

Add this method

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

            //You can find your button here
           if(view instanceof Button)
            {
                if(view.getId() == R.id.getenter)
                {
                    Toast.makeText(getApplicationContext(),"toast_msg",Toast.LENGTH_LONG).show();
                }
            }


        }
    });

after adapter code.

lv.setadapter(adpater);

edited Sep 10 '18 at 08:11

answered Sep 10 '18 at 08:04

Mohamed Mohaideen AH

2,527
1
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After as in after lv.setadapter(adpater); i have to write setonItemClickListerner(); - @Mohamed Mohaideen – nikhil lohar Sep 10 '18 at 08:06
Yes you have to add this method after setadapter and find anyviews inside that method from the class `list_pending`.. and perform action. – Mohamed Mohaideen AH Sep 10 '18 at 08:12
I have copy paste the same code but no toast message shown – nikhil lohar Sep 10 '18 at 08:54
You can put breakpoints & check the condtions of if loop are ok. – Mohamed Mohaideen AH Sep 10 '18 at 09:00
Actually the button is not working only I tried putting something else – nikhil lohar Sep 10 '18 at 09:05
`button is not working` - i can't get you.. Without the if loop you can able to show toast or not? Check with that.. – Mohamed Mohaideen AH Sep 10 '18 at 09:07
I am saying that i guess the IF cases are not working – nikhil lohar Sep 10 '18 at 09:10

try to display button with toast function in my ListView

2 Answers2

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