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Android's Gallery element used in this Example to show multiple
surface views in a slider/spinner mode.

There is no reason other than just some random picking up of view
elements from the Android APIs, to line up these elements so as to
slide/spin these views of different colors across left to right
and right to left by using touch from within a Gallery from Android's
API. As this example is tested using Android Emulator, so this spinner
is going to be tested only with the mouse click and move actions.

In this example I shall be creating one Gallery instance, four SurfaceView
instances, and a Customized ArrayAdapter instance with the overridden
getView method.

Four SurfaceViews will have different colors of background.
The customized ArrayAdapter is to return one of these surface view
objects based on the position argument to the getView method.

My custom adapter is as follows:















MyCustomImageAdapter.java

 

final class MyCustomImageAdapter extends ArrayAdapter {

	public MyCustomImageAdapter(Context context, 
			int textViewResourceId, List objects) {
		super(context, textViewResourceId, objects);
	}
	public View getView(int position, View convertView,
			                          ViewGroup parent) {
        return (View) getItem(position);
	}
}



The main Activity for this example is the one declared while
creating an Android project using Eclipse with DDMS and Android
plugin. I named it as DrawOnScreen, and the example code is as follows:

DrawOnScreen.java (Not showing the package name used in this
example)

 

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Bundle;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Gallery;

public class DrawOnScreen extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Gallery gallery = new Gallery(getApplicationContext());
        
        SurfaceView svPink = new SurfaceView(gallery.getContext());
        svPink.setBackgroundColor(Color.rgb(200, 100, 150));    
        
        
        SurfaceView svGreen = new SurfaceView(getApplicationContext());
        svGreen.setBackgroundColor(Color.GREEN);
        
        SurfaceView svDBlue = new SurfaceView(getApplicationContext());
        svDBlue.setBackgroundColor(Color.BLUE);
        
        SurfaceView svLBlue = new SurfaceView(getApplicationContext());
        svLBlue.setBackgroundColor(Color.GRAY);

        SurfaceView svBrown = new SurfaceView(getApplicationContext());
        svBrown.setBackgroundColor(Color.rgb(100, 100, 250));
   
        List lst = new ArrayList();
        lst.add(svPink);
        lst.add(svGreen);
        lst.add(svDBlue);
        lst.add(svLBlue);
        lst.add(svBrown);
        
        MyCustomImageAdapter arrayAdapter = 
        	        new MyCustomImageAdapter(getApplicationContext(),
        		                             R.layout.gallery,lst);
        gallery.setAdapter(arrayAdapter);
        
        setContentView(gallery);
    }
}



So gallery instance is used to set the content view for this activity.
And the adapter is the instance of my customized ArrayAdapter.

This works (as far as I know or tested using Emulator only).

Please let me know if you are having any trouble working with this
example code in some version or device that I havn't used/tested.
You can use following comment section for posting your queries
as well.


If anything missed out , please let me know at
techienjoy at yahoo . com
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References : 
Tags: TabHost and TabActivity Example on Android Platform
Tags: ListView Example on Android Platform
Tags: android sensors list
Tags: android listview example
Tags: android imageview example
Tags: Android example download any file sourcecode
Tags: android expandable list dynamically created example
Tags: android expandable list example
Tags: Android Gallery surfaceviews spinner
Tags: Android example download any file sourcecode
Tags: Android Layout Example
Tags: Android Text To Speech Example

Tags: DOJO Example Dialog
Tags: DOJO Example Tree Widget
Tags: different logger file log4j
Tags: JDBC Transaction isolation
Tags: event handling java code
Tags: example quartz scheduler
Tags: example tag library web application
Tags: Flex
Tags: index
Tags: inmemory image creation java awt
Tags: JSF Example Main
Tags: JSF Example Tags CheckBoxes
Tags: JSF Example Tags dataTable
Tags: JSF Example Tags SelectBoxes
Tags: JSF Example Tags Walkthrough
Tags: JSF Example Validation
Tags: JSF Resource Bundle
Tags: log4j example 1
Tags: log4j example
Tags: Miscellaneous
Tags: Mule ESB File Transport
Tags: Mule ESB JMS Transport
Tags: stream download batch
Tags: sychronized block wait notify
Tags: thread wait notify example
Tags: using apache commons log
Tags: web load test
Tags: Wizard Framework Idea Java




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