How to display toast when click on list item

Question

Trying to display toast when click on list items but showing many errors in Visual studio. The codes are working fine in android studio and i remake it for C# using RemobjectC#. Below are my mainactivity codes

using System;
using java.util;
using android.app;
using android.content;
using android.os;
using android.util;
using android.view;

using android.widget;

namespace org.me.androidapplication8
{

public class MainActivity: Activity {

    protected override void onCreate(Bundle savedInstanceState) {
        base.onCreate(savedInstanceState);
        ContentView = R.layout.main;

        // Simple array with a list of my favorite TV shows
        String[] favoriteTVShows = {"Pushing Daisies", "Better Off Ted",
                "Twin Peaks", "Freaks and Geeks", "Orphan Black", "Walking Dead",
                "Breaking Bad", "The 400", "Alphas", "Life on Mars"};
        ListAdapter theAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_expandable_list_item_1, favoriteTVShows);
        ListView theListView = (ListView)findViewById(R.id.theListView);
        theListView.setAdapter(theAdapter);
        /*ERROR part 
        theListView.setOnItemClickListener(new
                    AdapterView.OnItemClickListener() {

                          public override void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
                             String tvShowPicked = "You selected" +
                                     String.valueOf(adapterView.getItemAtPosition(position));
                              Toast.makeText(MainActivity.this, tvShowPicked, Toast.LENGTH_SHORT).show();
                           }
                    });
        */ 
    }
}
}

codes of main layout xml file

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal" >

      <ListView
       android:layout_width="match_parent"
       android:layout_height="match_parent"
       android:id="@+id/theListView"></ListView>

</LinearLayout>

i don't have much knowledge of C#. Please suggest me how to remake it on C# and why i am getting this errors

These are the errors

theListView.setOnItemClickListener(new  //Error:- cannot instantiate interface type
 public override void onItemClick(AdapterView<?> adapterView, View view, int position, long id) { //Syntax error Syntax error
    String tvShowPicked = "You selected " + favoriteTVShows[position];//Unknown identifier (position)
    Toast.makeText(MainActivity.this, tvShowPicked, Toast.LENGTH_SHORT).show(); //identifier expected(this)
            }
                    });//Type expected
//(E374) opening parenthesis or less expected, got closing brace
//(E1) semicolon expected, got "public"


...

@ManuZi, i have edited my question mentioning some error part. — user3909370, Nov 06 '14 at 08:42

score 0 · Answer 1 · answered Nov 06 '14 at 08:13

theListView.setOnItemClickListener(new
                    AdapterView.OnItemClickListener() {

                          public override void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
                             String tvShowPicked = "You selected " + favoriteTVShows[position];
                              Toast.makeText(MainActivity.this, tvShowPicked, Toast.LENGTH_SHORT).show();
                           }
                    });

Replace this with your code.

score 0 · Answer 2 · answered Nov 06 '14 at 08:14

Try

String tvShowPicked = "You selected"+String.valueOf(theAdapter.getItemAtPosition(position));

instead of

String tvShowPicked = "You selected"+String.valueOf(adapterView.getItemAtPosition(position));

by making your adapter Global or setting it to final

score 0 · Answer 3 · answered Nov 06 '14 at 18:54

0

The problem is that in C# anonymous types cannot implement methods. In this case you need to use a lambda or implement the methods in the main class.

answered Nov 06 '14 at 18:54

SteveF

116
2

score 0 · Answer 4 · edited May 09 '15 at 15:54

I used @AnujSharma's answer and changed the code a bit:

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

            String tvShowPicked = "You selected " + favouriteTVShows[position];
            Toast.makeText(MainActivity.this, tvShowPicked, Toast.LENGTH_SHORT).show();

        }
    });

Instead of:

theListView.setOnItemClickListener(new
                AdapterView.OnItemClickListener() {

                      public override void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
                         String tvShowPicked = "You selected " + favoriteTVShows[position];
                          Toast.makeText(MainActivity.this, tvShowPicked, Toast.LENGTH_SHORT).show();
                       }
                });

How to display toast when click on list item

4 Answers4