Android获取View的内容图片

1 获取当前可见的View的图片，类似于手机截屏View dView = getWindow().getDecorView();//获取DecorViewdView.setDrawingCacheEnabled(true);//生成View的副本，是一个BitmapBitmap bmp = dView.getDrawingCache();//获取View的副本，就是这个View上面所显示的任何内容2 获取任意View的内容图片

Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888);Canvas c = new Canvas(b);//使用bitmap构建一个Canvas，绘制的所有内容都是绘制在此Bitmap上的Drawable bgDrawable = v.getBackground();bgDrawable.draw(c);//绘制背景view.draw(c);//绘制前景return bitmap;如果是ListView，ScrollView，Webview等高度不固定的View，还需要手动计算出来高度来创建Bitmap，其他步骤相同

for (int i = 0; i < listView.getChildCount(); i++) {    h += listView.getChildAt(i).getHeight();}// 创建对应大小的bitmapbitmap = Bitmap.createBitmap(listView.getWidth(), h,        Bitmap.Config.ARGB_8888);

示例代码

//组合viewprivate Bitmap combineView(View topView, WebView centerView, View bottomView) {    float topWidth = topView.getWidth();    float topHeight = topView.getHeight();    float centerWidth = centerView.getWidth();    float centerHeight = centerView.getContentHeight() * centerView.getScale();    float bottomWidth = bottomView.getWidth();    float bottomHeight = bottomView.getHeight();    float width = Math.max(topWidth, Math.max(centerWidth, bottomWidth));//取最大的宽度作为最终宽度    float height = topHeight + centerHeight + bottomHeight;//计算总高度    Bitmap topBitmap = Bitmap.createBitmap((int) width, (int) topHeight, Bitmap.Config            .ARGB_8888);//顶部图片    topView.draw(new Canvas(topBitmap));    Bitmap centerBitmap = Bitmap.createBitmap((int) width, (int) centerHeight, Bitmap.Config            .ARGB_8888);//中部图片    centerView.draw(new Canvas(centerBitmap));    Bitmap bottomBitmap = Bitmap.createBitmap((int) width, (int) bottomHeight, Bitmap.Config            .ARGB_8888);//底部图片    bottomView.draw(new Canvas(bottomBitmap));    Bitmap bitmap = Bitmap.createBitmap((int) width, (int) height, Bitmap.Config.ARGB_8888);//底图    Canvas canvas = new Canvas(bitmap);//画布    Paint paint = new Paint();    canvas.drawBitmap(topBitmap, 0, 0, paint);//画顶部    canvas.drawBitmap(centerBitmap, 0, topHeight, paint);//画中间    canvas.drawBitmap(bottomBitmap, 0, topHeight + centerHeight, paint);//画底部    return bitmap;}

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