ImportKeys: Extract interface and refactoring

ImportKeys: Extract interface and refactoring

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/IteratorWithSize.java

@@ -0,0 +1,17 @@
+package org.sufficientlysecure.keychain.util;
+
+import java.util.Iterator;
+
+/**
+ * An extended iterator interface, which knows the total number of its entries beforehand.
+ */
+public interface IteratorWithSize<E> extends Iterator<E> {
+
+    /**
+     * Returns the total number of entries in this iterator.
+     *
+     * @return the number of entries in this iterator.
+     */
+    int getSize();
+
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/ParcelableFileCache.java

@@ -216,12 +216,4 @@ public class ParcelableFileCache<E extends Parcelable> {
         return tempFile.delete();
     }
 
-    /** As the name implies, this is an extended iterator interface, which
-     * knows the total number of its entries beforehand.
-     */
-    public static interface IteratorWithSize<E> extends Iterator<E> {
-        /** Returns the number of total entries in this iterator. */
-        int getSize();
-    }
-
 }