How to take data that was typed in EditText and by clicking "submit" in that window should add it to previous activity listview items? What I need to do is:
I saw this similar question here:add items to listview dynamically android
But i couldn't understand the answer.Somebody please explain how to do this.
You just do the following : Prepare your xml like this :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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" >
<EditText
android:id="@+id/editText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_toLeftOf="@+id/addItem"
android:hint="Add a new item to List View" />
<Button
android:id="@+id/addItem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:text="Add" />
<ListView
android:id="@+id/listView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/editText" >
</ListView>
</RelativeLayout>
Activity looks like following :
public class MainActivity extends Activity {
EditText editText;
Button addButton;
ListView listView;
ArrayList<String> listItems;
ArrayAdapter<String> adapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editText = (EditText) findViewById(R.id.editText);
addButton = (Button) findViewById(R.id.addItem);
listView = (ListView) findViewById(R.id.listView);
listItems = new ArrayList<String>();
listItems.add("First Item - added on Activity Create");
adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, listItems);
listView.setAdapter(adapter);
addButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
listItems.add(editText.getText().toString());
adapter.notifyDataSetChanged();
}
});
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> a, View v, int position,
long id) {
Toast.makeText(MainActivity.this, "Clicked", Toast.LENGTH_LONG)
.show();
}
});
}
}
Create String Arraylist and initialize it
ArrayList<String> str1 = new ArrayList<String>();
Add some values on it
str1.add("First Row");
str1.add("Second Row");
str1.add("Third Row");
str1.add("Fourth Row");
str1.add("Fifth Row");
Then set Adapter to ListView
adapter=new ListAdapter(this,str1);
list.setAdapter(adapter);
then add your EditText text into str1 and then called adapter.notifyDataSetChanged(); like
str1.add(edit_message.getText().toString());
adapter.notifyDataSetChanged();
Try to add this code into Button onclick()
Demo Output:
Suppose you have an arraylist
ArrayList<String> dataList = new Arraylist ();
So On clicking of button, you need to add the new data item into your data arraylist.
For this first take the value entered in edittext and store in a string.
String editedValue = yourEditText.getText.toString();
Then we need to add this in our datalist.
Like
dataList.add(editedValue);
And then just call adapter.notifyDataSetChanged()
yourAdapter.notifyDataSetChanged();
It will work.
