AutoCompleteTextView:
Android AutoCompleteTextView is an
editable text field, it displays a list of suggestions in a drop down menu automatically
while the user is entering the characters from which
user can select only one suggestion.
To use AutoCompleteTextView you have to first create an AutoCompleteTextView field in the xml file. its syntax is given below.
To use AutoCompleteTextView you have to first create an AutoCompleteTextView field in the xml file. its syntax is given below.
<AutoCompleteTextView
android:layout_width="match_parent"
android:layout_height="70dp"
android:id="@+id/actv"
android:completionThreshold="1"/>
android:layout_width="match_parent"
android:layout_height="70dp"
android:id="@+id/actv"
android:completionThreshold="1"/>
After this now get the reference of AutoComepleteTextView as below.
AutoCompleteTextView actv=(AutoCompleteTextView)findViewById(R.id.actv);
The next thing you need to do is to specify the
list of suggestions items to be displayed. You can specify the list items as an
ArrayList in java. Syntax is given below.
final ArrayList<String> list=new ArrayList<String>();
list.clear();
list.add("India");
list.add("Pakistan");
list.add("china");
list.add("US");
ArrayAdapter<String> adp=new ArrayAdapter<String>(getApplicationContext(),android.R.layout.simple_list_item_1,list); actv.setAdapter(adp);
The array adapter class is responsible for
displaying the data as list in the suggestion box of the text field. The setAdapter method is used to
set the adapter of the autoCompleteTextView. Apart from these methods, the
other methods of Auto Complete are listed below.
Sr.No
|
Method &
description
|
1
|
getAdapter()
This method returns a filterable list adapter
used for auto completion
|
2
|
getCompletionHint()
This method returns optional hint text
displayed at the bottom of the the matching list
|
3
|
getDropDownAnchor()
This method returns returns the id for the
view that the auto-complete drop down list is anchored to.
|
4
|
getListSelection()
This method returns the position of the
dropdown view selection, if there is one
|
5
|
isPopupShowing()
This method indicates whether the popup menu
is showing
|
6
|
setText(CharSequence text, boolean filter)
This method sets text except that it can
disable filtering
|
7
|
showDropDown()
This method displays the drop down on screen.
|
Android AutoCompleteTextView
Example:
Step1) In
order to use AutoCompleteTextView you have to first create an
AutoCompletTextView Field in the xml. Its syntax is given below. Create
activity.xml file in layout folder and write the below code.
activity.xml
<?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"
<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" android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="home.actvtest.MainActivity">
<AutoCompleteTextView
android:layout_width="match_parent"
android:layout_height="70dp"
android:id="@+id/actv"
android:completionThreshold="1"/>
</RelativeLayout>
</RelativeLayout>
Step
2)
Create MainActivity.java in java folder and write the below code.
MainActivity.java
package
home.actvtest;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import java.util.ArrayList;
public class MainActivity extends Activity
{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
AutoCompleteTextView actv=(AutoCompleteTextView)findViewById(R.id.actv);
final ArrayList<String> list=new ArrayList<String>();
list.clear();
list.add("India");
list.add("Pakistan");
list.add("china");
list.add("US");
list.add("Banglaedesh");
list.add("Barma");
list.add("Rashya");
list.add("Iran");
list.add("Iraq");
list.add("Itali");
list.add("Brezil");
list.add("Srilanka");
ArrayAdapter<String> adp=new ArrayAdapter<String>(getApplicationContext(),android.R.layout.simple_list_item_1,list);
actv.setAdapter(adp);
}
}
import android.app.Activity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import java.util.ArrayList;
public class MainActivity extends Activity
{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
AutoCompleteTextView actv=(AutoCompleteTextView)findViewById(R.id.actv);
final ArrayList<String> list=new ArrayList<String>();
list.clear();
list.add("India");
list.add("Pakistan");
list.add("china");
list.add("US");
list.add("Banglaedesh");
list.add("Barma");
list.add("Rashya");
list.add("Iran");
list.add("Iraq");
list.add("Itali");
list.add("Brezil");
list.add("Srilanka");
ArrayAdapter<String> adp=new ArrayAdapter<String>(getApplicationContext(),android.R.layout.simple_list_item_1,list);
actv.setAdapter(adp);
}
}
Step3) write the below code in AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="home.actvtest">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Output:
