Android Image Switcher




Android Image Switcher



  1. Static Image Switcher Creation in Android
  2. Dynamic Image Switcher Creation in Android



Static Image 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 :

<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" >

    <Gallery
        android:id="@+id/gallery1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true" />

    <ImageSwitcher
        android:id="@+id/imageSwitcher1"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_below="@+id/gallery1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="5dp" >
    </ImageSwitcher>

</RelativeLayout>

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

package com.gudivada.hemanthsomaraju;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ViewSwitcher.ViewFactory;

public class MainActivity extends Activity implements ViewFactory {

int imgs[] =
{
R.drawable.android,
R.drawable.amazon,
R.drawable.apple,
R.drawable.ask,
R.drawable.dropbox,
R.drawable.email,
R.drawable.fb,
R.drawable.google,
R.drawable.linkedin
};

ImageSwitcher imgSwitcher;

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

imgSwitcher = (ImageSwitcher) findViewById(R.id.imageSwitcher1);
imgSwitcher.setFactory(this);
imgSwitcher.setInAnimation(AnimationUtils.loadAnimation(this,
android.R.anim.fade_in));
imgSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this,
android.R.anim.fade_out));

Gallery gallery = (Gallery) findViewById(R.id.gallery1);
gallery.setAdapter(new ImageAdapter(this));

gallery.setOnItemClickListener(new OnItemClickListener() {

public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
imgSwitcher.setImageResource(imgs[arg2]);
}
});
}

public class ImageAdapter extends BaseAdapter {

private Context ctx;

public ImageAdapter(Context c) {
ctx = c;
}

public int getCount() {

return imgs.length;
}

public Object getItem(int arg0) {

return arg0;
}

public long getItemId(int arg0) {

return arg0;
}

public View getView(int arg0, View arg1, ViewGroup arg2) {

ImageView iView = new ImageView(ctx);
iView.setImageResource(imgs[arg0]);
iView.setScaleType(ImageView.ScaleType.FIT_XY);
iView.setLayoutParams(new Gallery.LayoutParams(200, 150));
return iView;
}
}

public View makeView() {
ImageView iView = new ImageView(this);
iView.setScaleType(ImageView.ScaleType.FIT_CENTER);
iView.setLayoutParams(new ImageSwitcher.LayoutParams
(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT));
iView.setBackgroundColor(0xFF000000);
return iView;
}
}


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 :










Dynamic Image 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 :

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rl"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
 
    <Gallery
        android:id="@+id/gallery1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true" />


</RelativeLayout>

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.content.Context;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;
import android.widget.ViewSwitcher.ViewFactory;

public class MainActivity extends Activity implements ViewFactory{

RelativeLayout rl;
Gallery gal;
ImageSwitcher img;
RelativeLayout.LayoutParams params;

int imgs[] =
{
R.drawable.android,
R.drawable.amazon,
R.drawable.apple,
R.drawable.ask,
R.drawable.dropbox,
R.drawable.email,
R.drawable.fb,
R.drawable.linkedin,
R.drawable.twitter
};

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
     
        rl = (RelativeLayout) findViewById(R.id.rl);
        gal = (Gallery) findViewById(R.id.gallery1);
     
        img = new ImageSwitcher (MainActivity.this);
     
        gal.setAdapter(new ImageAdapter(this));
     
        img.setFactory(this);
     
        img.setAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_in));
     
        img.setAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out));
     
        params = new RelativeLayout.LayoutParams
         ((int) LayoutParams.WRAP_CONTENT, (int) LayoutParams.WRAP_CONTENT);
     
        params.addRule(RelativeLayout.CENTER_IN_PARENT);
     
        img.setLayoutParams(params);
     
        rl.addView(img);
     
        gal.setOnItemClickListener(new OnItemClickListener() {

@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub

img.setImageResource(imgs[arg2]);
}
});    
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
 
    public class ImageAdapter extends BaseAdapter
    {
     private Context ctx;

public ImageAdapter(Context c) {
ctx = c;
}

@Override
public int getCount() {
// TODO Auto-generated method stub
return imgs.length;
}

@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}

@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub

ImageView iView = new ImageView(ctx);
iView.setImageResource(imgs[position]);
iView.setScaleType(ImageView.ScaleType.FIT_XY);
iView.setLayoutParams(new Gallery.LayoutParams(200, 150));

return iView;
}
    }

@Override
public View makeView() {
// TODO Auto-generated method stub

ImageView iView = new ImageView(this);
iView.setScaleType(ImageView.ScaleType.FIT_CENTER);
iView.setLayoutParams(new ImageSwitcher.LayoutParams
(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT));
iView.setBackgroundColor(0xFFffffff);

return iView;
}
}

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 :