Добавлены методы для сохранения/загрузки состояний

src/com/annimon/everlastingsummer/IOUtil.java

@@ -1,11 +1,17 @@
 package com.annimon.everlastingsummer;
 
 import java.io.BufferedReader;
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
 import java.io.FileDescriptor;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.List;
+import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.os.Environment;
@@ -26,6 +32,35 @@ public final class IOUtil {
         return result;
     }
     
+    public static List<SaveInfo> listSaves(Context context) {
+        final String[] fileslist = context.fileList();
+        final List<SaveInfo> saves = new ArrayList<SaveInfo>(fileslist.length);
+        for (String filename : fileslist) {
+            try {
+                saves.add(readSaveInfo(context, filename));
+            } catch (IOException ioe) {
+                if (Logger.DEBUG) Logger.log("listSaves: " + filename, ioe);
+            }
+        }
+        return saves;
+    }
+    
+    public static SaveInfo readSaveInfo(Context context, String filename) throws IOException {
+        final InputStream is = context.openFileInput(filename);
+        final DataInputStream dis = new DataInputStream(is);
+        final SaveInfo result = SaveInfo.readFromStream(dis);
+        dis.close();
+        return result;
+    }
+    
+    public static void writeSaveInfo(Context context, String filename, SaveInfo saveInfo) throws IOException {
+        final OutputStream os = context.openFileOutput(filename, Context.MODE_PRIVATE);
+        final DataOutputStream dos = new DataOutputStream(os);
+        saveInfo.writeToStream(dos);
+        dos.flush();
+        dos.close();
+    }
+    
     private static FileInputStream streamForFD;
     public static FileDescriptor getFD(String file) throws IOException {
         if (streamForFD != null) streamForFD.close();