How to move ShapeDrawable in Canvas on touch events

Question

I am trying to implement a drawing application in Android. Where the user should be able to select and move drawn shapes.
Currently, I have statically drawn some rectangles and text on my drawing canvas:

        View mDrawingCanvas = new View(mContext) 
        {
            ShapeDrawable rectangle;
            @Override
            public boolean isFocused() {
                // TODO Auto-generated method stub
                Log.d(TAG, "View On focused is called !");
                return super.isFocused();
            }

            @Override
            public boolean onTouchEvent(MotionEvent event) {
                // TODO Auto-generated method stub

                return super.onTouchEvent(event);
            }

            @Override
            protected void onDraw(final Canvas canvas) {
                super.onDraw(canvas);
                // Work out current total scale factor
                // from source to view

                final float scale = mSourceScale*(float)getWidth()/(float)mSize.x;

                Paint paint = new Paint();
                paint.setStyle(Paint.Style.FILL);
                paint.setColor(Color.WHITE);

                //Custom View
                rectangle = new ShapeDrawable(new RectShape());
                rectangle.getPaint().setColor(Color.GRAY);
                rectangle.getPaint().setStyle(Paint.Style.FILL_AND_STROKE);
                rectangle.getPaint().setStrokeWidth(3);
                rectangle.setBounds((int)(50*scale), (int)(30*scale), (int)(200*scale), (int)(150*scale));
                rectangle.draw(canvas);

                rectangle.getPaint().setColor(Color.BLUE);
                rectangle.getPaint().setStyle(Paint.Style.FILL_AND_STROKE);
                rectangle.getPaint().setStrokeWidth(3);
                rectangle.setBounds((int)(200*scale), (int)(200*scale), (int)(400*scale), (int)(350*scale));
                rectangle.draw(canvas);
            }
        };

I want to select (draw borders on the selected shape) and move the elongated shapes to the onTouch events on the drawing canvas.
Can someone please tell me about this, any help is much appreciated.

Answer 1

, .
. :

Answer 2

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:

public class DrawTest extends View {

    private static final String TAG = "Desenho";

    private ShapeDrawable rectangle;
    private Paint paint;
    private float currX, currY;
    private Rect blue, gray;

    public DrawTest(Context context) {
        super(context);

        currX = 1;
        currY = 1;

        gray = new Rect(50,30,200,150);
        blue = new Rect(200,200,400,350);

        paint = new Paint();
        rectangle = new ShapeDrawable(new RectShape());
    }

    @Override
    public boolean isFocused() {
        Log.d(TAG, "View On focused is called !");
        return super.isFocused();
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        currX = event.getX();
        currY = event.getY();
        invalidate();
        Log.d(TAG, "View On touch is called! X= "+currX + ", Y= "+currY);
        return super.onTouchEvent(event);
    }

    @Override
    protected void onDraw(final Canvas canvas) {
        super.onDraw(canvas);

        paint.setStyle(Paint.Style.FILL);
        paint.setColor(Color.WHITE);

        //Custom View
        rectangle.getPaint().setColor(Color.GRAY);
        rectangle.getPaint().setStyle(Paint.Style.FILL_AND_STROKE);
        rectangle.getPaint().setStrokeWidth(3);
        gray.set((int)(50+currX), (int)(30+currY), (int)(200+currX), (int)(150+currY));
        rectangle.setBounds(gray);
        gray = rectangle.getBounds();
        rectangle.draw(canvas);

        rectangle.getPaint().setColor(Color.BLUE);
        rectangle.getPaint().setStyle(Paint.Style.FILL_AND_STROKE);
        rectangle.getPaint().setStrokeWidth(3);
        blue.set((int)(200+currX), (int)(200+currY), (int)(400+currX), (int)(350+currY));
        rectangle.setBounds(blue);
        blue = rectangle.getBounds();
        rectangle.draw(canvas);

    }

}