Stop player from playing the daily sudoku again if they have solved it already.

app/src/main/java/org/secuso/privacyfriendlysudoku/ui/GameActivity.java

@@ -454,6 +454,10 @@ public class GameActivity extends BaseActivity implements NavigationView.OnNavig
         //Save solved sudoku, if it happens to be a daily sudoku, to daily sudoku database
         if(gameController.getGameID() == GameController.DAILY_SUDOKU_ID) {
             gameController.saveDailySudoku(GameActivity.this);
+            SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(this);
+            SharedPreferences.Editor editor = sharedPref.edit();
+            editor.putBoolean("finishedForToday", true);
+            editor.apply();
         }
 
         //Show time hints new plus old best time

app/src/main/java/org/secuso/privacyfriendlysudoku/ui/view/DailySudokuActivity.java

@@ -17,6 +17,7 @@ import android.widget.ListView;
 import android.widget.TextView;
 import android.view.View;
 import android.widget.RatingBar;
+import android.widget.Toast;
 
 import org.secuso.privacyfriendlysudoku.controller.GameController;
 import org.secuso.privacyfriendlysudoku.controller.database.DatabaseHelper;
@@ -85,19 +86,23 @@ public class DailySudokuActivity<Database> extends AppCompatActivity {
                 + (currentDate.get(Calendar.MONTH) + 1) * 10000 + currentDate.get(Calendar.YEAR);
         final Intent intent = new Intent(this,GameActivity.class);
 
-        if (settings.getInt("lastPlayed", 0) == id) {
+        if (settings.getInt("lastPlayed", 0) != id) {
-            intent.putExtra("loadLevel", true);
-            intent.putExtra("loadLevelID", GameController.DAILY_SUDOKU_ID);
-        } else {
             SharedPreferences.Editor editor = settings.edit();
             editor.putInt("lastPlayed", id);
+            editor.putBoolean("finishedForToday", false);
             editor.apply();
 
             intent.putExtra("gameDifficulty", gameDifficulty.name());
             intent.putExtra("isDailySudoku", true);
-        }
-
             startActivity(intent);
+
+        } else if (!settings.getBoolean("finishedForToday", true)) {
+            intent.putExtra("loadLevel", true);
+            intent.putExtra("loadLevelID", GameController.DAILY_SUDOKU_ID);
+            startActivity(intent);
+        } else {
+            Toast.makeText(this, R.string.finished_daily_sudoku, Toast.LENGTH_LONG).show();
+        }
     }
     
     public boolean onCreateOptionsMenu(Menu menu) {

app/src/main/res/values-de/strings.xml

@@ -102,4 +102,7 @@
     <string name="skip">Skip</string>
     <string name="menu_tutorial">Tutorial</string>
 
+    <!-- ### DailySudokuActivity ###-->
+    <string name="finished_daily_sudoku">Du hast das Sudoku des Tages bereits gelöst.</string>
+
 </resources>

app/src/main/res/values/strings.xml

@@ -152,4 +152,8 @@
     <string name="next">Next</string>
     <string name="skip">Skip</string>
     <string name="menu_tutorial">Tutorial</string>
+
+    <!-- ### DailySudokuActivity ###-->
+    <string name="finished_daily_sudoku">You have already solved the sudoku of the day</string>
+
 </resources>