写了一个小脚本来输出目录树：
效果如下所示：
-[ java ]
-[ com ]
-[ nostra13 ]
-[ universalimageloader ]
-[ cache ]
-[ disc ]
|- DiskCache.java
|
-[ impl ]
|- BaseDiskCache.java
|- LimitedAgeDiskCache.java
|- UnlimitedDiskCache.java
|
-[ ext ]
|- DiskLruCache.java
|- LruDiskCache.java
|- StrictLineReader.java
|- Util.java
|
-[ naming ]
|- FileNameGenerator.java
|- HashCodeFileNameGenerator.java
|- Md5FileNameGenerator.java
|
-[ memory ]
|- BaseMemoryCache.java
|- LimitedMemoryCache.java
|- MemoryCache.java
|
-[ impl ]
|- FIFOLimitedMemoryCache.java
|- FuzzyKeyMemoryCache.java
|- LargestLimitedMemoryCache.java
|- LimitedAgeMemoryCache.java
|- LRULimitedMemoryCache.java
|- LruMemoryCache.java
|- UsingFreqLimitedMemoryCache.java
|- WeakMemoryCache.java
|
-[ core ]
|- DefaultConfigurationFactory.java
|- DisplayBitmapTask.java
|- DisplayImageOptions.java
|- ImageLoader.java
|- ImageLoaderConfiguration.java
|- ImageLoaderEngine.java
|- ImageLoadingInfo.java
|- LoadAndDisplayImageTask.java
|- ProcessAndDisplayImageTask.java
|
-[ assist ]
|- ContentLengthInputStream.java
|- FailReason.java
|- FlushedInputStream.java
|- ImageScaleType.java
|- ImageSize.java
|- LoadedFrom.java
|- QueueProcessingType.java
|- ViewScaleType.java
|
-[ deque ]
|- BlockingDeque.java
|- Deque.java
|- LIFOLinkedBlockingDeque.java
|- LinkedBlockingDeque.java
|
-[ decode ]
|- BaseImageDecoder.java
|- ImageDecoder.java
|- ImageDecodingInfo.java
|
-[ display ]
|- BitmapDisplayer.java
|- CircleBitmapDisplayer.java
|- FadeInBitmapDisplayer.java
|- RoundedBitmapDisplayer.java
|- RoundedVignetteBitmapDisplayer.java
|- SimpleBitmapDisplayer.java
|
-[ download ]
|- BaseImageDownloader.java
|- ImageDownloader.java
|
-[ imageaware ]
|- ImageAware.java
|- ImageViewAware.java
|- NonViewAware.java
|- ViewAware.java
|
-[ listener ]
|- ImageLoadingListener.java
|- ImageLoadingProgressListener.java
|- PauseOnScrollListener.java
|- SimpleImageLoadingListener.java
|
-[ process ]
|- BitmapProcessor.java
|
-[ utils ]
|- DiskCacheUtils.java
|- ImageSizeUtils.java
|- IoUtils.java
|- L.java
|- MemoryCacheUtils.java
|- StorageUtils.java