Question

I write an Android Application and I use a ListView and it works fine, but if I want to click on an Item then I want to start a second Activity with the selected Item. For this I want to use OnItemClick but it doesn’t work 🙁

MainActivity.java

package de.linde.listview;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View; 
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.AdapterView.OnItemClickListener;

public class MainActivity<T> extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        List valueList = new ArrayList<String>(); 

        for(int i=0;i<10;i++)
        {
            valueList.add("value" + i); 
        }

        ListAdapter adapter = new ArrayAdapter<String>(getApplicationContext(),android.R.layout.simple_list_item_1,valueList); 

        final ListView lv = (ListView)findViewById(R.id.listview1);
        lv.setAdapter(adapter); 

        lv.setOnItemClickListener(new OnItemClickListener() {   //<-- Error1

            @Override
            public void OnItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3){  //<-- Error 2

                Intent intent = new Intent();
                intent.setClassName(getPackageName(), getPackageName() + ".Show_Activity"); 
                intent.putExtra("selected",lv.getAdapter().getItem(arg2).toString()); 
                startActivity(intent); 

            }

        });


    }

}

Here my Show_Activity.java

package de.linde.listview;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.widget.TextView;

public class Show_Activity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.anzeige);

        Intent intent = getIntent();

        ((TextView)(findViewById(R.id.textView1))).setText("Es wurde" + intent.getStringExtra("selected") + " gewählt!"); 
    }

}

I get the Error 1:

The type new AdapterView.OnItemClickListener(){} must implement the
inherited abstract method
AdapterView.OnItemClickListener.onItemClick(AdapterView, View, int,
long)

I get the Error 2:

The method OnItemClick(AdapterView, View, int, long) of type new
AdapterView.OnItemClickListener(){} must override a superclass method

What did I make wrong?

Answer 1

Try to remove @override before onItemClick method:

lv.setOnItemClickListener(new OnItemClickListener() {   //<-- Error1

       // @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3){  //<-- Error 2

            Intent intent = new Intent();
            intent.setClassName(getPackageName(), getPackageName() + ".Show_Activity"); 
            intent.putExtra("selected",lv.getAdapter().getItem(arg2).toString()); 
            startActivity(intent); 

        }

    });