add ability to know what the file is used for file cache (FileCache.getFile())

library/pom.xml

@@ -5,7 +5,7 @@
     <groupId>com.danikula</groupId>
     <artifactId>videocache</artifactId>
     <packaging>jar</packaging>
-    <version>1.0</version>
+    <version>1.0.1</version>
     <name>VideoCache</name>
     <description>cache support for android VideoView</description>
 

library/src/main/java/com/danikula/videocache/FileCache.java

@@ -20,7 +20,7 @@ public class FileCache implements Cache {
 
     public FileCache(File file) throws ProxyCacheException {
         try {
-            Preconditions.checkNotNull(file);
+            checkNotNull(file);
             boolean partialFile = isTempFile(file);
             boolean completed = file.exists() && !partialFile;
             if (completed) {
@@ -105,6 +105,15 @@ public class FileCache implements Cache {
         return !isTempFile(file);
     }
 
+    /**
+     * Returns file to be used fo caching. It may as original file passed in constructor as some temp file for not completed cache.
+     *
+     * @return file for caching.
+     */
+    public File getFile() {
+        return file;
+    }
+
     private boolean isTempFile(File file) {
         return file.getName().endsWith(TEMP_POSTFIX);
     }