Comments on: Playing with graphics in Android – Part I

By: don

don — Fri, 03 Feb 2012 20:53:35 +0000

hey guys
im thinking of making a game on android but my question is
WHERE DO I GET THIS SOFTWARE THAT IS USED FOR WRITING THINGS

By: Larry

Larry — Thu, 26 Jan 2012 21:51:38 +0000

For those who had problems overrading the onDraw() method, try this code instead of the onDraw():

@Override
        public void draw(android.graphics.Canvas canvas) {
          super.draw(canvas);
          Bitmap _scratch = BitmapFactory.decodeResource(getResources(), R.drawable.icon);
          canvas.drawColor(Color.DKGRAY);
          canvas.drawBitmap(_scratch, 10, 10, null);
        }

By: Martin

Martin — Mon, 09 Jan 2012 14:31:16 +0000

Try to rename “R.drawable.icon” to “R.drawable.ic_launcher”. Just check how the png file is named in your drawable folder. You can use eclipse code completion, too: remove “icon” and move your cursor to the dot behind “drawable”. Than press ctrl + spacebar and you should see a list of possible variables that you can use. One of them should be “ic_launcher”.

By: Lamont

Lamont — Mon, 09 Jan 2012 14:27:38 +0000

Im a absolute beginner to both android and Java.
I rewrote the code exactly and even copied and paste it and get the message:

Error: icon can not be resolved or is not a field.

1	Bitmap _scratch = BitmapFactory.decodeResource(getResources(), R.drawable.icon);

Thanks for any assistance.

By: Martin

Martin — Mon, 26 Dec 2011 22:34:09 +0000

Hi,
these errors appear when there is a problem with the emulator. This has nothing to do with the program. Often this kind of error means that your emulator connection somehow got interrupted or the android running inside the emulator doesnt response correctly. My advice: close the emulator and start again.

By: gulsen

gulsen — Mon, 26 Dec 2011 22:25:14 +0000

Dear Martin,
I try this codes but it gives errors like that;

Failed to install fvfv.apk on device ‘emulator-5554!
[2011-12-27 00:10:06 - fvfv] (null)
[2011-12-27 00:10:13 - fvfv] Failed to install fvfv.apk on device ‘emulator-5554′: EOF
[2011-12-27 00:10:13 - fvfv] com.android.ddmlib.InstallException: EOF
[2011-12-27 00:10:14 - fvfv] Launch canceled!
what should I do?

By: sean wolfe

sean wolfe — Fri, 28 Oct 2011 18:41:42 +0000

ah! nevermind, I think it was a just a name change between different Android versions. icon –> ic_launcher . I understand the R.java file better and, program works now!

By: Martin

Martin — Tue, 25 Oct 2011 13:48:32 +0000

I have a tutorial written for this kind of a map: http://www.droidnova.com/create-a-scrollable-map-with-cells-part-i,654.html

By: Raj

Raj — Mon, 24 Oct 2011 10:59:49 +0000

Hi,

I basically want to draw a map on the screen, this will all be done using draw on canvas (this I can do). The map will have a similar structure to a maze.

However the problem I am having is my overall map is 1000 x 1000, however I only ever want the user to see 10×10. Then every time the user moves (arrows or touch & drag) the app automatically draws the next bitmap within the 1000 x 1000 sequence until they reach the end.

I would also like to add a birdseye view where the view is zoomed in filling up 70% of the Android Screen.

Can anyone point me in the right direction to solve this?

Thanks

By: Richard Lalancette

Richard Lalancette — Fri, 02 Sep 2011 16:43:51 +0000

This might be a great addition to your graphic article.

I am providing free 9 patch PNGs for any projects, including commercial projects here: http://android9patch.blogspot.com/

Enjoy all!