drawing_rectangle

public class DualProgressView extends View {
    private int mSize;
    private Paint mPaint;
    private RectF mRect;

    public DualProgressView(Context context) {
        super(context);
        init();
    }

    public DualProgressView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public DualProgressView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
        mPaint.setColor(Color.RED);
        mPaint.setStyle(Paint.Style.STROKE);
        mPaint.setStrokeWidth(8f);
        mPaint.setStrokeCap(Paint.Cap.BUTT);
        mRect = new RectF(200,200,800,800);

    }


    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        canvas.drawRect(mRect,mPaint);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        int xPad = getPaddingLeft() + getPaddingRight();
        int yPad = getPaddingTop() + getPaddingBottom();
        int width = getMeasuredWidth() - xPad;
        int height = getMeasuredHeight() - yPad;
        mSize = (width < height) ? width : height;
        setMeasuredDimension(mSize + xPad, mSize + yPad);
    }

    @Override
    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
        super.onLayout(changed, left, top, right, bottom);
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();
    }

    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
    }


}