On Nov 2, 9:06 am, joshbeck <[EMAIL PROTECTED]> wrote:
> On Nov 2, 9:04 am, joshbeck <[EMAIL PROTECTED]> wrote:
>
> > Thanks a million. I'll try this today and report back.
>
> > I appreciate it.
>
> > When you say 'set a flag.' Do you mean like an int? 0 or 1 kind of
> > thing?
>
> > Thanks again,
> > Pros
>
> One more thing:
> If I set a flag in OnTouchEvent that is something like this
> int myflag = 1;
>
> What is the best way to make it global so that onDraw will recognize
> it?
Ok, this keeps the background and draws a circle on top of it when I
touch the screen.
Question: How do you think I might get it to keep the old circles when
I draw new ones.
Right now when I click the canvas is completely redrawn and the first
circle I created is lost.
Thanks, that helped a lot.
import android.app.Activity;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Rect;
import android.os.Bundle;
import android.util.FloatMath;
import android.view.MotionEvent;
import android.view.View;
public class BitmapMesh extends Activity {
SampleView mView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mView = new SampleView(this);
setContentView(mView);
}
private static class SampleView extends View {
private Canvas mCanvas;
private final Paint mPaint;
private Bitmap mBitmap;
public float XX;
public float YY;
public float ZZ;
public SampleView(Context context) {
super(context);
ZZ = 0;
mPaint = new Paint();
mPaint.setAntiAlias(true);
mPaint.setARGB(255, 255, 255, 255);
mBitmap = BitmapFactory.decodeResource(getResources(),
R.drawable.darkcleanlinux);
}
@Override protected void onDraw(Canvas canvas) {
mCanvas = canvas;
if(ZZ != 0){
canvas.drawBitmap(mBitmap, 0, 0, null);
canvas.drawCircle(XX, YY, 20, mPaint);
}
else
canvas.drawBitmap(mBitmap, 0, 0, null);
}
@Override public boolean onTouchEvent(MotionEvent event) {
invalidate();
XX= event.getX();
YY= event.getY();
ZZ = 1;
return true;
}
private void draw2(float X, float Y) {
mCanvas.drawCircle(X, Y, 200, mPaint);
}
}
}
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