Android实现将View转化为图片并保存到本地

private void viewSaveToImage(View view) {
        view.setDrawinGCacheEnabled(true);
        view.setDrawingCacheQuality(View.DRAWING_CACHE_QUALITY_HIGH);
        view.setDrawingCacheBackgroundColor(Color.WHITE);

        // 把一个View转换成图片
        Bitmap cachebmp = loadBitmapFromView(view);

        FileOutputStream fos;
        String imagePath = "";
        try {
            // 判断手机设备是否有SD卡
            boolean isHasSDCard = Environment.getExternalStorageState().equals(
                    android.os.Environment.MEDIA_MOUNTED);
            if (isHasSDCard) {
                // SD卡根目录
                File sdRoot = Environment.getExternalStorageDirectory();
                File file = new File(sdRoot, Calendar.getInstance().getTimeInMillis()+".png");
                fos = new FileOutputStream(file);
                imagePath = file.getAbsolutePath();
            } else
                throw new Exception("创建文件失败!");

            cachebmp.compress(Bitmap.CompressFORMat.PNG, 90, fos);

            fos.flush();
            fos.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
        LogUtil.e("imagePath="+imagePath);

        view.destroyDrawingCache();
    }

    private Bitmap loadBitmapFromView(View v) {
        int w = v.getWidth();
        int h = v.getHeight();

        Bitmap bmp = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
        canvas c = new Canvas(bmp);

        c.drawColor(Color.WHITE);
        

        v.layout(0, 0, w, h);
        v.draw(c);

        return bmp;
 }

DisplayMetrics metric = new DisplayMetrics();
                    getWindowManager().getDefaultDisplay().getMetrics(metric);
                    int width = metric.widthPixels;     // 屏幕宽度（像素）
                    int height = metric.heightPixels;   // 屏幕高度（像素）
                    View mingpianView = LayoutInflater.from(this).inflate(R.layout.view_team_mingpian, null, false);
                    layoutView(mingpianView, width, height);

//然后View和其内部的子View都具有了实际大小，也就是完成了布局，相当与添加到了界面上。接着就可以创建位图并在上面绘制了：
    private void layoutView(View v, int width, int height) {
        // 整个View的大小 参数是左上角 和右下角的坐标
        v.layout(0, 0, width, height);
        int measuredWidth = View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY);
        int measuredHeight = View.MeasureSpec.makeMeasureSpec(10000, View.MeasureSpec.AT_MOST);
        
        v.measure(measuredWidth, measuredHeight);
        v.layout(0, 0, v.getMeasuredWidth(), v.getMeasuredHeight());
    }