android View 转Bitmap

 /**     *  added by yangguangfu Draw the view into a bitmap.     */   private  Bitmap getViewBitmap(View v) {      Bitmap bitmap=null;    if(v!=null){     v.clearFocus();            v.setPressed(false);            boolean willNotCache = v.willNotCacheDrawing();            v.setWillNotCacheDrawing(false);            // Reset the drawing cache background color to fully transparent            // for the duration of this operation            int color = v.getDrawingCacheBackgroundColor();            v.setDrawingCacheBackgroundColor(0);            float alpha = v.getAlpha();            v.setAlpha(1.0f);            if (color != 0) {                v.destroyDrawingCache();            }            v.buildDrawingCache();            Bitmap cacheBitmap = v.getDrawingCache();            if (cacheBitmap == null) {                Log.e(TAG, "failed getViewBitmap(" + v + ")", new RuntimeException());                return null;            }             bitmap = Bitmap.createBitmap(cacheBitmap);            // Restore the view            v.destroyDrawingCache();            v.setAlpha(alpha);            v.setWillNotCacheDrawing(willNotCache);            v.setDrawingCacheBackgroundColor(color);    }               return bitmap;    }
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