The onDraw() function is the phone's way of asking you "so how do you want me to draw this canvas, from scratch?" If you say "draw a circle there!", you get one circle. If you want it to draw two circles, your CustomDrawableView needs to tell it to draw two different circles every time onDraw() is called, for example with two different drawables.
Yusuf Saib Android ·T· · ·Mobile· stick together 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 3, 6:30 am, Graham <[email protected]> wrote: > Hi, > > I am new to the android developing world and have what I think is a > very simple question. I have created a circle on a canvas and drawn it > successfully. I now wish to add another circle to this already > existing canvas in a different position. I have defined my x and y as > arguments I pass to custom drawable view but when I try and get > another circle drawn it just replaces the one that was already > present. How do I keep the first circle and add on a second? > > (My code below does not show trying to add another circle, it is > simply what works with creating a single colour circle). > > Thanks > > G > > 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, 150, 40, > "green"); > setContentView(mCustomDrawableView); > } > > } > > package com.image; > > import android.content.Context; > import android.graphics.Canvas; > import android.graphics.drawable.ShapeDrawable; > import android.graphics.drawable.shapes.OvalShape; > import android.view.View; > > public class CustomDrawableView extends View { > private ShapeDrawable mDrawable; > > public CustomDrawableView(Context context, int x, int y, String > Colour) { > super(context); > > //int x = 80; > //int y = 90; > int width = 50; > int height = 50; > > mDrawable = new ShapeDrawable(new OvalShape()); > if (Colour == "green"){ > mDrawable.getPaint().setColor(0xff74AC23);//green > } else if (Colour == "red") { > mDrawable.getPaint().setColor(0xffff0000);//red > } > mDrawable.setBounds(x, y, x + width, y + height); > } > > protected void onDraw(Canvas canvas) { > mDrawable.draw(canvas); > } > > > > } --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Beginners" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~----------~----~----~----~------~----~------~--~---
