package com.example.demotest;

import android.content.Context;

import android.graphics.Paint;

import android.util.AttributeSet;

import android.widget.FrameLayout;

import android.graphics.Bitmap;

import android.graphics.Canvas;

import android.graphics.PorterDuffXfermode;

import android.graphics.PorterDuff;

import android.graphics.Rect;

public class GridViewLayer extends FrameLayout {

private Paint mErasePaint;

public GridViewLayer(Context context, AttributeSet attrs) {

super(context, attrs);

// TODO Auto-generated constructor stub

mErasePaint = new Paint();

mErasePaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.MULTIPLY));

mErasePaint.setColor(0xFFFFFF);

mErasePaint.setAlpha(0);

}

@Override

protected void dispatchDraw(Canvas canvas) {

// TODO Auto-generated method stub

Bitmap b = Bitmap.createBitmap(getMeasuredWidth(), getMeasuredHeight(), Bitmap.Config.ARGB_8888);

Canvas c = new Canvas(b);

c.drawColor(0x99000000);

c.drawCircle(100, 100, 100.0f, mErasePaint);

c.setBitmap(null);

b = null;

super.dispatchDraw(canvas);

}

}