You need to override the onTouchEvent method in CustomDrawableView
@Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
// get your x and y values from event.getX() and
event.getY()
case MotionEvent.ACTION_DOWN:
// redraw your green or red circle depending on your x,y
values.
break;
}
return true;
}
Hope this helps,
Balwinder Kaur
Open Source Development Center
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The views, opinions and statements in this email are those of the
author solely in their individual capacity, and do not necessarily
represent those of T-Mobile USA, Inc.
On Aug 4, 5:10 am, Graham <gxt...@gmail.com> wrote:
> Hi again,
>
> I am getting to grip with the android fundamentals and am curious as
> to how the onTouch and the onTouchlisteners work.
>
> To keep it simple I have used onDraw to draw two circles on a canvas,
> a green circle and a red circle (each of type ShapeDrawable - Oval
> Shape). I now wish to make it so that when I push the green circle, it
> will move to the right and if I push the red circle it will move down.
>
> I can move the circles with a timer delay so I am aware of how to do
> this but I can't capture the onTouch. Can someone please help?
>
> I have drawn my two circles with the below code (very similar to one
> of the exercises):
>
> ------------------------------------------------
>
> package com.image;
>
> import android.app.Activity;
> import android.os.Bundle;
>
> public class image extends Activity {
> /** Called when the activity is first created. */
>
> private CustomDrawableView mCustomDrawableView;
> //private CustomDrawableView mCustomDrawableView2;
>
> protected void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
>
> //last argument 1 = green, all others = red
> mCustomDrawableView = new CustomDrawableView(this, 20,20,20,20);
>
> setContentView(mCustomDrawableView);
>
> }
>
> }
>
> package com.image;
>
> import android.content.Context;
> import android.graphics.Canvas;
> import android.graphics.drawable.Drawable;
> import android.graphics.drawable.ShapeDrawable;
> import android.graphics.drawable.shapes.OvalShape;
> import android.view.View;
>
> public class CustomDrawableView extends View {
> private ShapeDrawable[] mDrawables;
>
> public CustomDrawableView(Context context, int x, int y, int
> width, int height) {
> super(context);
>
> mDrawables = new ShapeDrawable[2];
>
> mDrawables[0] = new ShapeDrawable(new OvalShape()); // green
> one
> mDrawables[1] = new ShapeDrawable(new OvalShape()); //red one
>
> mDrawables[0].getPaint().setColor(0xff74AC23);
> mDrawables[1].getPaint().setColor(0xffff0000);
>
> mDrawables[0].setBounds(x,y,x+width,y+height); //arguments
> left, top, right, bottom
> mDrawables[1].setBounds(x+30,y+30,x+width+30,y+height+30);
>
> }
>
> @Override protected void onDraw(Canvas canvas) {
>
> //mDrawables[0].draw(canvas);
> for (Drawable dr : mDrawables) {
> dr.draw(canvas);
> }
> }
>
> }
>
>
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