Change Icon

[goulamass]

Hi everyone.

First I know that there is several threads about it but no one helped me.

So my question is how canI simply change the application's icon when it gets focus???

Or if anyone could explain me this :

Livelink - Redirection

[Dougsg38p]

Use HomeScreen.updateIcon() to change the default icon for your applicatin.
Use HomeScreen.setRolloverIcon() to change the icon that is displayed when the cursor is rolled over your icon. Note that this is 4.2& up, doesn' work on older revs of OS.

[goulamass]

I work on 4.3 so no version problem.

But where on my code I have to put the HomeScreen.setRolloverIcon()????

If I just try this on my main:

Bitmap icon = Bitmap.getBitmapResource("Logo2.png");
HomeScreen.setRolloverIcon(icon);
Test2 theApp = new Test2();
theApp.enterEventDispatcher();

Nothing appends

[Dougsg38p]

Test "icon" and make sure it is not null - getBitmapresource() will fail if the "png" file is not located in the root of the project.

[goulamass]

No pb with because I'm sure that the logo is added to the project and not null.

And I just have to specify Logo2.png to access it as I do for the home picture.

So I check it and no pb I can add it to the screen by the following :

BitmapField picture = new BitmapField(bmp.getBitmapResource("Logo2.png"));
add(picture);

And so I look into the icon and I have this :

icone net.rim.device.api.system.Bitmap@dbe364a

So I'm sure that icon is not null

[Dougsg38p]

so, the icon should change to logo2.png when you roll over it (with the cursor) on the BB Home screen. Is this not occurring?

[hrbuckley]

Have you read the knowledge base article on this?

How To - Define a rollover icon for an application.

[goulamass]

Yes as I give the link in my first post.

But I'm not sure that I understand the way I have to following.

So if you can explain me or show an exemple, it will be helpfull

[pwaugh]

What part do you not understand? Ask a question we can answer, or post your code.

[VegetableBird]

Here is a sample:

import net.rim.blackberry.api.homescreen.HomeScreen;
import net.rim.device.api.system.Bitmap;
import net.rim.device.api.ui.UiApplication;
import net.rim.device.api.ui.component.LabelField;
import net.rim.device.api.ui.container.MainScreen;

public class HelloWorld extends UiApplication {
	public static void main(String[] args) {
		final HelloWorld theApp = new HelloWorld();
		if (HomeScreen.supportsIcons()) {
			System.out.println("supportsIcons  == true");
			Bitmap icon1 = Bitmap.getBitmapResource("icon1.png");
			Bitmap icon2 = Bitmap.getBitmapResource("icon2.png");
			HomeScreen.updateIcon(icon1);
			HomeScreen.setRolloverIcon(icon2);
		} else {
			System.out.println("supportsIcons  == false");
		}
		theApp.enterEventDispatcher();
	}

	public HelloWorld() {
		pushScreen(new HelloWorldScreen());
	}
}

class HelloWorldScreen extends MainScreen {
	public HelloWorldScreen() {
		super(DEFAULT_MENU | DEFAULT_CLOSE);

		setTitle(new LabelField("Hello world demo", LabelField.ELLIPSIS
				| LabelField.USE_ALL_WIDTH));
	}
}

Wish it's helpful.

[goulamass]

You're right it was very helpfull.

But it works only when I started the application before.

Is there anyway to do this each time????