Android View Switcher





Android View Switcher



  1. View Switcher Creation in Android
  2. View Switcher with Manual Controls in Android



View Switcher Creation in Android

Step 1 : Select File -> New -> Project -> Android Application Project (or) Android Project. Fill the forms and click "Finish" button. If you have any doubt regarding create a new project Click Here.

Step 2 : Open res -> layout -> activity_main.xml (or) main.xml and add following code :

<?xml version="1.0" encoding="utf-8"?>
<ViewSwitcher xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/ViewSwitcher"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
 
    <RelativeLayout
android:background="#0000FF"
android:layout_width="fill_parent"
android:layout_height="fill_parent"  >
 
<ProgressBar
    android:id="@+id/progressbar"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true" />
   
<TextView
    android:text="Loading..."
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:textSize="20dp"
    android:textColor="#FFFFFF"
    android:layout_centerHorizontal="true"
    android:layout_below="@+id/progressbar" />

    </RelativeLayout>

    <RelativeLayout
android:background="#FFFF00"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
 
<TextView
            android:text="Finished!"
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"
            android:textSize="20dp"
            android:textColor="#000000"
            android:layout_marginTop="10dp"
            android:layout_centerHorizontal="true" />
 
<ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
         
            android:layout_centerHorizontal="true"
            android:layout_marginTop="50dp"
            android:src="@drawable/android" />
 
    </RelativeLayout>

</ViewSwitcher>

Step 3 : Open src -> package -> MainActivity.java and add following code :


package com.gudivada.hemanthsomaraju;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.ViewSwitcher;

public class MainActivity extends Activity {
//the ViewSwitcher
private ViewSwitcher switcher;
private static final int REFRESH_SCREEN = 1;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

switcher = (ViewSwitcher) findViewById(R.id.ViewSwitcher);
startScan();
}

public void startScan() {

new Thread() {

public void run() {

try{
// This is just a tmp sleep so that we can emulate something loading
Thread.sleep(5000);
// Use this handler so than you can update the UI from a thread
Refresh.sendEmptyMessage(REFRESH_SCREEN);
} catch(Exception e){
}
}
}.start();
}

// Refresh handler, necessary for updating the UI in a/the thread
Handler Refresh = new Handler(){
public void handleMessage(Message msg) {

switch(msg.what){

case REFRESH_SCREEN:
switcher.showNext();
// To go back to the first view, use switcher.showPrevious()
break;

default:
break;
}
}
};
}

Step 4 : Open AndroidManifest.xml and add following code :

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

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.INTERNET"/>
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.gudivada.hemanthsomaraju.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 : Our output will be like this :

Note
In View Switcher we can add two childs only.

 



View Switcher with Manual Controls in Android
Step 1 : Select File -> New -> Project -> Android Application Project (or) Android Project. Fill the forms and click "Finish" button. If you have any doubt regarding create a new project Click Here.

Step 2 : Open res -> layout -> activity_main.xml (or) main.xml and add following code :

<?xml version="1.0" encoding="utf-8"?>
<ViewSwitcher xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/ViewSwitcher"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
   
    <RelativeLayout
    android:background="#0000FF"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"  >
         
    <TextView
        android:text="1st Page View"
        android:id="@+id/t1"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"
        android:textSize="20dp"
        android:layout_marginTop="50dp"
        android:textColor="#FFFFFF"
        android:layout_centerHorizontal="true"/>
   
        <Button
            android:text="Next Page"
            android:textColor="#FFFFFF"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/t1"
            android:layout_marginTop="50dp"
            android:layout_centerHorizontal="true"
            android:id="@+id/Next"/>
   
    </RelativeLayout>

    <RelativeLayout
    android:background="#FFFF00"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
   
    <TextView
            android:text="2nd Page View"
            android:id="@+id/t2"
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"
            android:textSize="20dp"
            android:layout_marginTop="50dp"
            android:textColor="#000000"
            android:layout_centerHorizontal="true"/>
   
    <Button
            android:text="Previous Page"
            android:textColor="#000000"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@+id/t2"
            android:layout_marginTop="50dp"
            android:layout_centerHorizontal="true"
            android:id="@+id/Previous"/>
   
    </RelativeLayout>

</ViewSwitcher>


Step 3 : Open src -> package -> MainActivity.java and add following code :

package com.gudivada.hemanthsomaraju;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.ViewSwitcher;

public class MainActivity extends Activity {

    ViewSwitcher switcher;
    Button Next, Previous;
   
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
       
        switcher = (ViewSwitcher) findViewById(R.id.ViewSwitcher);
       
        Next = (Button) findViewById(R.id.Next);
        Previous = (Button) findViewById(R.id.Previous);
       
        Next.setOnClickListener(new View.OnClickListener() {
           
        public void onClick(View v) {
            // TODO Auto-generated method stub
               
            new AnimationUtils();
            switcher.setAnimation(AnimationUtils.makeInAnimation
                (getBaseContext(), true));
            switcher.showNext();
        }
    });
       
        Previous.setOnClickListener(new View.OnClickListener() {
           
        public void onClick(View v) {
            // TODO Auto-generated method stub
               
            new AnimationUtils();
            switcher.setAnimation(AnimationUtils.makeInAnimation
                (getBaseContext(), true));
            switcher.showPrevious();
        }
    });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
}


Step 4 : Open AndroidManifest.xml and add following code :

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

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="19" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.gudivada.hemanthsomaraju.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 : Our output will be like this :