Hi gents,
I'm trying to develop an animated wallpaper for Android 2.1.
My first step would be to draw a JPEG image onto the screen but it
doesn't seem to work.
Any idea?
public class RumblefishWallpaper extends WallpaperService {
@Override
public void onCreate() {
super.onCreate();
}
@Override
public void onDestroy() {
super.onDestroy();
}
@Override
public Engine onCreateEngine() {
Context c = this.getApplicationContext();
return new RumblefishWallpaperEngine(c);
}
public class RumblefishWallpaperEngine extends Engine {
private float mTouchX = -1;
private float mTouchY = -1;
private Context myContext;
RumblefishWallpaperEngine(Context c)
{
myContext = c;
drawFrame();
}
private final Runnable mDrawCube = new Runnable() {
public void run() {
drawFrame();
}
};
@Override
public void onCreate(SurfaceHolder surfaceHolder) {
super.onCreate(surfaceHolder);
// By default we don't get touch events, so enable them.
setTouchEventsEnabled(true);
}
/*
* Store the position of the touch event so we can use it for
drawing later
*/
@Override
public void onTouchEvent(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_MOVE) {
mTouchX = event.getX();
mTouchY = event.getY();
} else {
mTouchX = -1;
mTouchY = -1;
}
drawFrame();
super.onTouchEvent(event);
}
void drawFrame() {
final SurfaceHolder holder = getSurfaceHolder();
Canvas c = null;
try {
c = holder.lockCanvas();
if (c != null) {
// draw something
Resources alpha = myContext.getResources();
Drawable a =
alpha.getDrawable(R.drawable.icon);
a.draw(c);
}
} finally {
if (c != null) holder.unlockCanvasAndPost(c);
}
}
}
}
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