Wants to fetch data in my listview on other activity

Question

I have a listview in my activity. I want to show the data of it when clicked on it on second activity. But is not able to do so. Help. This is the code. What to do so that my data is fetched from listview and is shown in next activity?

ListActivity.java

package com.example.task;

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

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

public class ListActivity extends Activity implements OnItemClickListener{

    ListView list1;

    LoginDataBaseAdapter loginDataBaseAdapter;
ArrayList<HashMap<String, String>> datalist;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_list);

    loginDataBaseAdapter=new LoginDataBaseAdapter(this);
    loginDataBaseAdapter=loginDataBaseAdapter.open();

    list1=(ListView)findViewById(R.id.list);

     datalist=loginDataBaseAdapter.getAllAnimals();
    ArrayAdapter<HashMap<String, String>> adapter=new         ArrayAdapter<HashMap<String,String>>(getApplicationContext(),    android.R.layout.simple_dropdown_item_1line,datalist);
        list1.setAdapter(adapter);
        list1.setOnItemClickListener(this);
    }

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.list, menu);
    return true;
}

@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
    // TODO Auto-generated method stub

}

}

Pass list item selected data via Intent on Override public void onItemClick(AdapterView> arg0, View arg1, int arg2, long arg3) { // TODO Auto-generated method stub } — Md Abdul Gafur, Jan 21 '14 at 07:55
You should use local receiver, and broadcast your update to other activities. Also you can populate your Listview on the other activity directly from the DB — Michael A, Jan 21 '14 at 07:58

score 1 · Answer 1 · answered Jan 21 '14 at 08:16

you can simple use this:

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

        String mydata= datalist.get(arg2).toString();
        // pass this data to your second activity
        Intent n = new Intent(YourActivityName.this ,SecondActivity.class);
        n.putExtra("key", mydata);
        startActivity(intent);
    }

Now retrieve in your SecondActivity on oncreate() method:

Intent n= getIntent();
String data = intent.getStringExtras("key");

score 0 · Answer 2 · answered Jan 21 '14 at 07:57

String yourdata;
@Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                long arg3) {

            yourdata= list1.getItemAtPosition(arg2).toString();
            // pass this data to your second activity

        }

score 0 · Answer 3 · answered Jan 21 '14 at 08:00

0

I think you are trying to achieve like this..

String DATA;
@Override
public void onItemClick(AdapterView<?> arg0, View view, int pos,
            long arg3) {
    DATA= YOUR_LIST.getItemAtPosition(pos).toString();
    Intent intent = new Intent(getApplicationContext(),SECOND_ACTIVITY.class);
    intent.putExtra("DATA",DATA);
    startActivity(intent);
}

Hope it will help you..!!

answered Jan 21 '14 at 08:00

Rushabh Patel

3,052
4
26
58

I tried it. But now my app is getting closed on its own.When i check the logcat it shows error where i assign the value to textview. – Aditya Prabhakar Jan 21 '14 at 09:25

A.Wie · Answer 4 · 2014-01-22T04:51:13.217

0

MainActivity

String data;
    @Override
    public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
        // TODO Auto-generated method stub

    data = adapter.getItem(position);
    Intent intent = new Intnet(MainActivity.this, NextActivity.class);
    i.putExtra("data", data);
    startActivity(intent);
    }

to open your data on NextActivity

Intent intent = getIntent();
        String passData= intent.getExtras().getString("data");

edited Jan 22 '14 at 04:51

answered Jan 21 '14 at 08:11

A.Wie

489
3
6

Oh sorry, change `list1` with `adapter` and then try again. This code work to me – A.Wie Jan 22 '14 at 04:54

score 0 · Answer 5 · edited May 23 '17 at 12:03

Well apart from passing data by intents, you can also use Global Variables.

You can check out an example here.

You can set your global variable/s to the value that is applicable when list item is selected (using your onItemClick listner) and then access it in other activity.

Eg:

CLASS MyApp

class MyApp extends Application 
{ public String whatever;}

CODE: ACTIVITY 1

@Override
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
    // TODO Auto-generated method stub

MyApp as = ((MyApp)getApplicationContext());
as.whatever = position + "Clicked";
}

CODE: ACTIVITY 2

class Blah extends Activity
{

  @Override
  public void onCreate(Bundle b){
  ...
  MyApp as = ((MyApp)getApplicationContext());      
  Log.d(as.whatever);
  ...}

}

Generally it is discouraged to use globals for various reasons. But technically this does work. — Jon Adams, Feb 21 '14 at 04:09

Wants to fetch data in my listview on other activity

5 Answers5