Comments on: How to create an option menu

By: Zohar

Zohar — Wed, 01 Feb 2012 15:19:31 +0000

Thanks, very good tutorial !

By: Martin

Martin — Mon, 23 Jan 2012 09:48:55 +0000

Without an error I can’t give a solution. Maybe you check if the icon is the correct one? If you use a new android version, try drawable.ic_launcher instead of drawable.icon…

By: Prakash

Prakash — Mon, 23 Jan 2012 09:44:58 +0000

Hi first of all thanks for your tutorial..
I have tried with your coding but i unable load the icon in menu item. Could any one please tell me the solution?

By: Palomo2

Palomo2 — Thu, 29 Dec 2011 14:04:56 +0000

Great, thanks!

By: Brandon

Brandon — Tue, 27 Dec 2011 03:01:37 +0000

hey I have been try to combine this tutorial and the 2D Tutorial Series – Part IV to make app were you use the menu from this tutorial to change the image you draw on screen in the 2D tutorial. I have run into a error on the computer that I dont know why it happening because it all makes sense in my head. the error is
12-26 21:16:51.671: E/AndroidRuntime(362): java.lang.NullPointerException
12-26 21:16:51.671: E/AndroidRuntime(362): at yantz.imageapp4.Element.
(Element.java:19)
12-26 21:16:51.671: E/AndroidRuntime(362): at yantz.imageapp4.Panel.onTouchEvent(Panel.java:56)

here the code for the Elements class

public class Element extends main{
	private int eX;
	private int eY;
 
		int location=yantz.imageapp4.R.drawable.box ;
	private Bitmap newimage;
 
	public  Element (Resources res, int x, int y) {
 
		switch (item2.getItemId()) {
 
		case yantz.imageapp4.R.id.icon2:     newimage = BitmapFactory.decodeResource(res,yantz.imageapp4.R.drawable.box);
                            break;
        case yantz.imageapp4.R.id.startupicon:   newimage = BitmapFactory.decodeResource(res, yantz.imageapp4.R.drawable.ic_launcher );
                            break;
        case yantz.imageapp4.R.id.icon:   newimage = BitmapFactory.decodeResource(res, yantz.imageapp4.R.drawable.icon );
 
    }
	Log.v("test", "item2 changed is: "+item2.getItemId());
 
		}
 
	public void doDraw2(Canvas canvas) {
		canvas.drawBitmap(newimage,eX,eY,null);
	}
	}

main

public class main extends Activity {
    /** Called when the activity is first created. */
	MenuItem item2;
 
	@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
       FrameLayout sv = new FrameLayout(this);
        LinearLayout ll = new LinearLayout(this);
        Panel test = new Panel(this);
        //ImageButton button = new ImageButton(this);
 
        ll.setOrientation(LinearLayout.VERTICAL);
        sv.addView(test);
        //ll.addView(button);
        sv.addView(ll);
 
        setContentView(sv);
 
    }
 
	public boolean onCreateOptionsMenu(Menu menu) {
		// TODO Auto-generated method stub
		MenuInflater inflater = getMenuInflater();
		inflater.inflate(R.menu.menu, menu);
		return super.onCreateOptionsMenu(menu);
	}
 
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		// TODO Auto-generated method stub
 
		item2=item;
 
		Log.v("test", "item2 change to = "+item2.getItemId());
		return super.onOptionsItemSelected(item);
		}
 
}

if anyone has any suggestions onor thought on this would be appreciated

By: Martin

Martin — Thu, 08 Dec 2011 08:33:06 +0000

You should go to stackoverflow and ask for help there. If you provide what you have so far and where you are stuck, they will help you.

By: Vasanth

Vasanth — Thu, 08 Dec 2011 08:23:47 +0000

Will you plz help me… i am doing project with Bluetooth. i can done part of coding for Bluetooth enable and discoverable but i can’t get any proper code for discovering devices and pairing with them. i search many site, they provide some coding but it is not working. will you plz send me basic bluetooth coding……plz…

By: Rajarajan

Rajarajan — Tue, 29 Nov 2011 05:15:09 +0000

Hi Martin,
Good Morning

Thanks for your Guidance. Here I realized my mistake when i saw your screen shot. Just I am changed my emulator skin option to [default (WXGA)]. Now project working fine.

Thanks a lot.
Bye..

By: Martin

Martin — Mon, 28 Nov 2011 11:49:42 +0000

In my case everything works like expected. I have tried it on the Android 3.2 emulator. Check this picture: You see the red circle, the menu button there is visible...

By: Rajarajan

Rajarajan — Mon, 28 Nov 2011 10:17:19 +0000

I am also doing the same, but the same output i got it, only the message will display like (hello world, SimpleOptionmenu)!.

Note: i just download the zip project link (SimpleOptionMenu (full eclipse project)). Extract it, and import it my eclipse IDE, and conversion it into android3.2 version through Project>>Properties>>Android. After that I Run the Project.

So Please guide me, what is the reason? If there is any technical or logical mistakes is there. And there is any possible for any other mistakes.

Please know it me.

Thanks u.