Android AutoCompleteTextView SetOnFocusChangeListener Example

Android AutoCompleteTextView SetOnFocusChangeListener Example

In this Article today learn Android AutoCompleteTextView SetOnFocusChangeListener Example. Android Provide an AutoCompleteTextView . for the lean visit the android developer google 

There is the AutoCompleteTextView method on Android.

 autoCompleteTextView1.addTextChangedListener(new TextWatcher() {

            @Override

            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override

            public void onTextChanged(CharSequence s, int start, int before, int count) {

                Toast.makeText(MainActivity.this,"Text Changed",Toast.LENGTH_SHORT).show();

            }

            @Override

            public void afterTextChanged(Editable s) {

            }

        });

    }

For the in this Method Usually used add exchangedListener, the context changed, and context changed in the method used on the AutoCompleteTextView in android. so follow the full source code.

1.MainActivity.java:

package com.akash.textchanged;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.text.Editable;

import android.text.TextWatcher;

import android.widget.AutoCompleteTextView;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

AutoCompleteTextView autoCompleteTextView1;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        autoCompleteTextView1=(AutoCompleteTextView)findViewById(R.id.autoCompleteTextView1);

        autoCompleteTextView1.addTextChangedListener(new TextWatcher() {

            @Override

            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override

            public void onTextChanged(CharSequence s, int start, int before, int count) {

                Toast.makeText(MainActivity.this,"Text Changed",Toast.LENGTH_SHORT).show();

            }

            @Override

            public void afterTextChanged(Editable s) {

            }

        });

    }

}

2.activity_main.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"

    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=".MainActivity" >

    <TextView

        android:id="@+id/textView2"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="25dp"

        android:text="@string/example_autocompletetextview" />

    <AutoCompleteTextView

        android:id="@+id/autoCompleteTextView1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_alignLeft="@+id/textView2"

        android:layout_below="@+id/textView2"

        android:layout_marginTop="54dp"

        android:ems="10" />

</RelativeLayout>

3.dimens.xml:

<resources>

    <!-- Default screen margins, per the Android Design guidelines. -->

    <dimen name="activity_horizontal_margin">16dp</dimen>

    <dimen name="activity_vertical_margin">16dp</dimen>

    </resources>

4.strings.xml:

<resources>

    <string name="app_name">TextChanged</string>

    <string name="example_autocompletetextview">example_autocompletetextview</string>

</resources>

5.AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.akash.textchanged">

    <application

        android:allowBackup="true"

        android:icon="@mipmap/ic_launcher"

        android:label="@string/app_name"

        android:roundIcon="@mipmap/ic_launcher_round"

        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>

6.Output: