In this article we are creating an application in which user inputs items to a ListView via an EditText widget. An extension to this article is available in the article titled “Deleting Selected Items from ListView in Android“, where deleting a listview item is discussed.
1. Create an Android project namely “AddItemsDynamically”
Figure 1: New Android Project
2. Select build target for the application
Figure 2: Select Android Build Target
3. Enter application details
Figure 3: Enter application details
4. Open and update the file res/values/strings.xml with the highlighted text given below
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="hello">Hello World, MainActivity!</string>
<string name="app_name">AddItemsDynamically</string>
<string name="hintTxtItem">Enter an item here ...</string>
<string name="lblBtnAdd">Add Item</string>
<string name="txtEmpty">List is empty</string>
</resources>
5. Open and update the file res/layout/main.xml with the given below code
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<EditText
android:id="@+id/txtItem"
android:layout_width="240dp"
android:layout_height="wrap_content"
android:inputType="text"
android:hint="@string/hintTxtItem"
/>
<Button
android:id="@+id/btnAdd"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/lblBtnAdd"
android:layout_toRightOf="@id/txtItem"
/>
<ListView
android:id="@android:id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/txtItem"
/>
<TextView
android:id="@android:id/empty"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/txtItem"
android:text="@string/txtEmpty"
android:gravity="center_horizontal"
/>
</RelativeLayout>
6. Open and update the file src/in/wptrafficanalyzer/additemsdynamically/MainActivity.java with the given below code
package in.wptrafficanalyzer.additemsdynamically;
import java.util.ArrayList;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
/** Note that here we are inheriting ListActivity class instead of Activity class **/
public class MainActivity extends ListActivity {
/** Items entered by the user is stored in this ArrayList variable */
ArrayList<String> list = new ArrayList<String>();
/** Declaring an ArrayAdapter to set items to ListView */
ArrayAdapter<String> adapter;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/** Setting a custom layout for the list activity */
setContentView(R.layout.main);
/** Reference to the button of the layout main.xml */
Button btn = (Button) findViewById(R.id.btnAdd);
/** Defining the ArrayAdapter to set items to ListView */
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, list);
/** Defining a click event listener for the button "Add" */
OnClickListener listener = new OnClickListener() {
@Override
public void onClick(View v) {
EditText edit = (EditText) findViewById(R.id.txtItem);
list.add(edit.getText().toString());
edit.setText("");
adapter.notifyDataSetChanged();
}
};
/** Setting the event listener for the add button */
btn.setOnClickListener(listener);
/** Setting the adapter to the ListView */
setListAdapter(adapter);
}
}
7. Execute the application
Figure 4: Application in execution
8. Download the source
9. References
http://developer.android.com/guide/index.html
I am George Mathew, working as software architect and Android app developer at wptrafficanalyzer.in
You can hire me on hourly basis or on project basis for Android applications development.
For hiring me, please mail your requirements to info@wptrafficanalyzer.in.
My other blogs
store4js.blogspot.com
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Hi,
I am new to this dynamic list view, I want to do long press action in this dynamic list view, How can i achieve this?.Thanks in advace.
append the given below code to onCreate() method
OnItemLongClickListener itemLongClickListener = new OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView arg0, View arg1,
int arg2, long arg3) {
Toast.makeText(getBaseContext(), "Long Clicked:" + adapter.getItem(arg2) , Toast.LENGTH_SHORT).show();
return false;
}
};
ListView lv = getListView();
lv.setOnItemLongClickListener(itemLongClickListener);
hi
how can i add items from edittext to spinner in my app?
thanx a lot
Please see the article titled “Dynamically adding items to Spinner Widget in Android“
Hey George!!..
awesome tutorial, but there’s a question in mind that whenever am running my application again, the items i’ve added have been removed and then i again have to insert new items, is this the reason you have used notifyDataSetchanged(), as i am also not getting the proper use of this method, i’ve googled it also, but still no result.. pls explain..
thanx in advance!!..
this sample is very very good! Clear, and easy.
Is it possible if i add an item here and be able to save it even if i restart the app? when i open the app and be able to see the items i already added?
Use shared preference to store data then add them to the listview,so that your data still saved even if you leave the app, this a link to how to use “shared preference” http://developer.android.com/training/basics/data-storage/shared-preferences.html
wish that could help
thank you it was very use full to me…
and how to delete that item please send code to my mail id
Hi,
Please refer the article Deleting Selected Items from ListView in Android
How can I allow users to add image & text to a listview??? I hope you can help.
How can I add the EditText input in 1 Activity to a ListView in a different Activity?
error
The type new DialogInterface.OnClickListener(){} must implement the inherited abstract method DialogInterface.OnClickListener.onClick(DialogInterface, int)
how to fix it?
Hi
Thanks for this blog.
I want to know how i can create a listview where each row having edit and delete button .
if i want to edit the row i can edit by pressing rdit button.
pls give one example using mysql database.
Hi, I want to be able to add another EditText to create ‘Item Details’, just below the Item. Then put in a checkbox to select the Item and its details, and bring it forward to the next page. Any idea how I could do that?
How to save and load the Listview items Dynamically , do you know of any way?,Great tutorials love to see an example
Really very simple to understand!
Can we retrieve the Input/Output stream of UsbDevice?
Hi, thanks for your example.
I want to change the color of the row when it have a specific text, something like when the text have numbers it change to red color. any idea how I could do that?
hi George Mathew i am new to android. i am try to when user click on imagebutton to call second activity.then second activity content a form value for example student name,mark1,mark2,mark3 input from user on submit button and send back their value to main activity to display listview. but i can’t find a way to store student name and there percentage to view in listview in dynamic.
Hi Thank you for the example.
If we have a listview in one activity and edittext in another activity how to append the values like a todo list. Here you are using the same activity.
Please do reply.
Thanks in advance.
Hi thanks for your example
I want to know how to align left and right alignment rows inside Listview
HI,
thank you for wonderful post. Could you help me with this please ?
I have a custom listview with the item,price,image with the checkbox. HOw can I send the selected items and price of listview (the items are selected via the checkbox) to the next activity when the button is clicked.
setListAdapter(adapter);
this line showing error
showing this message
“The method setListAdapter(ArrayAdapter) is undefined for the type grid”
How to add relativelayout dynamically to list view as an item ??
how can I add switch button instate of adding text?
Hi I want to add radio button with two spinners dynamically in listview.plz help
How would you save this list items to a text file ?
how can I add Image view and Delete Button on each row of the listview.?