Finger Painting/Drawing

cruiz · by **cruiz** » Sat Nov 20, 2010 4:56 pm

Can someone please help me...I'm a noob in android programming, I'm still going through tutorials....I'm trying to create simple drawing program. I got it to draw dots but I cant get a constant drawing going. I just want to be able to paint freely using finger touch but when I drag my finger across the screen it just draws dots. I have it set to use canvas.drawCircle...and I know this is the reason why its drawing dots..but I just don't know what else to use.

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Using java Syntax Highlighting

package com.example;
 
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
 
public class DrawView extends View implements OnTouchListener {
 
 
    List<Point> points = new ArrayList<Point>();
    Paint paint = new Paint();
 
    public DrawView(Context context) {
        super(context);
        setFocusable(true);
        setFocusableInTouchMode(true);
        setBackgroundColor (Color.WHITE);
        this.setOnTouchListener(this);
 
 
        paint.setColor(Color.BLACK);
        paint.setAntiAlias(true);
    }
 
    @Override
    public void onDraw(Canvas canvas) {
        for (Point point : points) {
            canvas.drawCircle(point.x, point.y, 5, paint);
        }
    }
 
    public boolean onTouch(View view, MotionEvent event) {
        Point point = new Point();
        point.x = event.getX();
        point.y = event.getY();
        points.add(point);
        invalidate();
        return true;
    }
}
 
class Point {
    float x, y;
 
    @Override
    public String toString() {
        return x + ", " + y;
    }
}
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Matt M · by **Matt M** » Fri Nov 26, 2010 10:07 pm

Copy this class and then edit it to your needs:
http://developer.android.com/resources/ ... Paint.html

Finger Painting/Drawing

Finger Painting/Drawing

Re: Finger Painting/Drawing

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