TextSwitcher and ImageSwitcher in Android

Introduction

 

This article explains TextSwitcher and ImageSwitcher in Android. Android Studio is used to create the sample.

 

TextSwitcher and ImageSwitcher are used for simple animated transitions. TextSwitcher and ImageSwitcher are used for smooth transition animation in Android. For example, changing a number in a DatePicker, CountDown timer in a clock. Text Switcher and ImageSwittcher are the classes in Android.

 

Step 1

 

Create a project like this:

 

 

Step 2

 

Create an XML file and with the following.

 

In this, you will use a TextSwitcher and an ImageSwitcher.

<?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" >

    <ImageSwitcher
        android:id="@+id/switcherImage"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_alignParentLeft="true" >
    </ImageSwitcher>

    <TextSwitcher
        android:id="@+id/switcherText"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:background="#99000000"
        android:padding="10dp" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="10dp"
        android:onClick="onSwitch"
        android:text="Next Image >>" />

</RelativeLayout>

Step 3

 

Create a Java class file with the following.

 

In a Java class file, you will create the id of the TextSwitcher and ImageSwitcher. Now call the setFactory method and the view as an argument.

package com.textswitcher;

import android.app.Activity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.TextSwitcher;
import android.widget.TextView;
import android.widget.ViewSwitcher.ViewFactory;

public class MainActivity extends Activity
{

 private static final String[] TEXT =
 {
  "Image 1",
  "Image 2",
  "Image 3"
 };
 private static final int[] IMAGES =
 {
  R.drawable.image1,
  R.drawable.images2,
  R.drawable.images3
 };
 private int Position = 0;
 private TextSwitcher switcherText;
 private ImageSwitcher switcherImage;

 @Override
 public void onCreate(Bundle savedInstanceState)
 {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  switcherText = (TextSwitcher) findViewById(R.id.switcherText);
  switcherText.setFactory(new ViewFactory()
  {
   @Override
   public View makeView()
   {
    TextView textView = new TextView(MainActivity.this);
    textView.setGravity(Gravity.CENTER);
    return textView;
   }
  });

  switcherText.setInAnimation(this, android.R.anim.fade_in);
  switcherText.setOutAnimation(this, android.R.anim.fade_out);

  switcherImage = (ImageSwitcher) findViewById(R.id.switcherImage);
  switcherImage.setFactory(new ViewFactory()
  {
   @Override
   public View makeView()
   {
    ImageView imageView = new ImageView(MainActivity.this);
    return imageView;
   }
  });
  switcherImage.setInAnimation(this, android.R.anim.slide_in_left);
  switcherImage.setOutAnimation(this, android.R.anim.slide_out_right);

  onSwitch(null);
 }

 public void onSwitch(View view)
 {
  switcherText.setText(TEXT[Position]);
  switcherImage.setBackgroundResource(IMAGES[Position]);
  Position = (Position + 1) % TEXT.length;
 }
}

Step 4

 

Android Manifest.xml file

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.textswitcher"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="7"
        android:targetSdkVersion="16" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.textswitcher.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>

Step 5