关于高德地图，自定义Marker使用自己的XMl，Glide加载图片流程

因为高德地图的marker在设置自定的view时将view转换成图片，所以不能使用网络图片，这时就要我们自己处理。（ios可以android就要自己处理）大概思路就是，先读取缓存中是否有此图片，有则直接设置到marker的view中的imageview中，如果没有就要监听图片加载流程，图片加载完毕时，在设置一遍view到marker中，Glide加载图片代码如下。

 vw = LayoutInflater.from(context).inflate(R.layout.view_mark_res, null);            //判断缓存中是否存在            boolean isCacheInDisk = Fresco.getImagePipelineFactory().getMainFileCache().hasKey(new SimpleCacheKey(tu));            if (isCacheInDisk) {//如果存在直接拿出数据                BinaryResource resource = ImagePipelineFactory.getInstance()                        .getMainFileCache().getResource(new SimpleCacheKey(tu));                if (null != resource) {                    File file = ((FileBinaryResource) resource).getFile();//此处会有FileBinaryResource.getFile()' on a null object  BUG                    bitmap = BitmapFactory.decodeFile(file.getAbsolutePath());                    ((ImageView) vw.findViewById(R.id.iv_img)).setImageBitmap(bitmap);                } else {                    getFrescoCacheBitmap(Uri.parse(tu), context);                }            } else                getFrescoCacheBitmap(Uri.parse(tu), context);

 private void getFrescoCacheBitmap(Uri uri, final Context context) {        // final Bitmap frescoTepBm;        ImageRequest imageRequest = ImageRequestBuilder                .newBuilderWithSource(uri)                .setProgressiveRenderingEnabled(true)                .build();        ImagePipeline imagePipeline = Fresco.getImagePipeline();        DataSource<CloseableReference<CloseableImage>>                dataSource = imagePipeline.fetchDecodedImage(imageRequest, context);        dataSource.subscribe(new BaseBitmapDataSubscriber() {            @RequiresApi(api = Build.VERSION_CODES.KITKAT)            @Override            public void onNewResultImpl(Bitmap b) {                bitmap = b;                View vw = LayoutInflater.from(context).inflate(R.layout.view_mark_res, null);                if (null != marker) {                    ((ImageView) vw.findViewById(R.id.iv_img)).setImageBitmap(b);                    if (rt == 2)                        vw.findViewById(R.id.iv_play).setVisibility(View.VISIBLE);                    marker.setIcon(BitmapDescriptorFactory.fromView(vw));                }            }            @Override            public void onFailureImpl(DataSource dataSource) {                LogUtils.e(TAG, " onFailureImp");            }        }, CallerThreadExecutor.getInstance());    }