BaiduMap SDK-地图截屏功能实现

BaiduMap提供了snapshot(SnapshotReadyCallback callback)来实现截屏功能，SnapshotReadyCallback回调函数中会获得截屏的Bitmap,可以对Bitmap进行操作；

        baiduMap = mapView.getMap();
        baiduMap.snapshot(new BaiduMap.SnapshotReadyCallback() {
            @Override
            public void onSnapshotReady(Bitmap snapBitmap) {
                try {
                    String pathStr = "/mnt/sdcard/baidumap/test" + System.currentTimeMillis() + ".png";
                    File file = new File(pathStr);
                    FileOutputStream outputStream = new FileOutputStream(file);
                    if (snapBitmap.compress(Bitmap.CompressFormat.PNG, 100, outputStream)) {
                        outputStream.flush();
                        outputStream.close();
                    }
                    Toast.makeText(getApplicationContext(), "地图截屏成功,保持图片为：" + pathStr, Toast.LENGTH_SHORT).show();
                } catch (Exception e) {
                    e.printStackTrace();
                    Toast.makeText(getApplicationContext(), "截图保存失败!" , Toast.LENGTH_SHORT).show();
                }
            }
        });