comment dessiner un chemin dans la vue sous Android

Question

J'ai besoin de dessiner un chemin avec des lignes simples sur le canevas, il devrait écrire un rectangle rouge avec des lignes blanches, mais il ne dessine rien, qu'est-ce que je manque ? Mon code :

Canvas canvas = new Canvas();

       Paint paint = new Paint();

       paint.setStyle(Paint.Style.FILL);
       paint.setColor(Color.RED);
       canvas.drawPaint(paint);
       Path path = new Path();
       //canvas.drawColor(Color.CYAN);

       for (int i = 5; i < 50; i++) {

           path.moveTo(4, i-1);
           path.lineTo(4, i);

       }
       path.close();

       paint.setStrokeWidth(3);
       paint.setPathEffect(null);
       paint.setColor(Color.WHITE);
       paint.setStyle(Paint.Style.STROKE);

       canvas.drawPath(path, paint);

        for (int i = 0; i < 3; i++) {
            View iview =    inflater.inflate(R.layout.linear_layout, null);
            if(i == 0){
                iview.findViewById(R.id.imageView1).setBackgroundResource(R.drawable.distspeed);
            }
            if(i == 1){
                iview.findViewById(R.id.imageView1).setBackgroundResource(R.drawable.hxmdist);
            }
            if(i == 2){
                iview.findViewById(R.id.imageView1).setBackgroundResource(R.drawable.hxmspeeed);
            }

            iview.draw(canvas);

            realViewSwitcher.addView(iview);
        }

Answer 1

Je ne poste que le code de travail :

activité modifiée :

for (int i = 0; i < 2; i++) {

        MyView mView = new MyView(this,i);

        realViewSwitcher.addView(mView);
        }

ma vue :

public class MyView extends View {

    public MyView(Context context, int kolki) {
        super(context);

        if (kolki == 0){
            this.setBackgroundResource(R.drawable.distspeed);
        }
        if (kolki == 1){
            this.setBackgroundResource(R.drawable.hxmdist);
        }
    }

    public void setBackgroundResource (int resid){
        super.setBackgroundResource(resid);
    } 

    public void onDraw(Canvas c){
        super.onDraw(c);
        Paint paint = new Paint();
        Path path = new Path();
        paint.setStyle(Paint.Style.FILL);
        paint.setColor(Color.TRANSPARENT);
        c.drawPaint(paint);
        for (int i = 50; i < 100; i++) {
               path.moveTo(i, i-1);
               path.lineTo(i, i);  
        }
        path.close();
        paint.setStrokeWidth(3);
        paint.setPathEffect(null);
        paint.setColor(Color.BLACK);
        paint.setStyle(Paint.Style.STROKE);
        c.drawPath(path, paint);
    }

}