diff --git a/brouter-routing-app/src/main/java/btools/routingapp/BInstallerActivity.java b/brouter-routing-app/src/main/java/btools/routingapp/BInstallerActivity.java
index 1b80c6b..2c27b50 100644
--- a/brouter-routing-app/src/main/java/btools/routingapp/BInstallerActivity.java
+++ b/brouter-routing-app/src/main/java/btools/routingapp/BInstallerActivity.java
@@ -15,26 +15,31 @@ import android.os.PowerManager;
 import android.os.PowerManager.WakeLock;
 import android.os.StatFs;
 
-import java.util.HashSet;
-import java.util.Set;
-
 public class BInstallerActivity extends Activity {
 
   public static final String DOWNLOAD_ACTION = "btools.routingapp.download";
 
   private static final int DIALOG_CONFIRM_DELETE_ID = 1;
-
   private BInstallerView mBInstallerView;
   private PowerManager mPowerManager;
   private WakeLock mWakeLock;
   private DownloadReceiver myReceiver;
-  private final Set<Integer> dialogIds = new HashSet<>();
+
+  static public long getAvailableSpace(String baseDir) {
+    StatFs stat = new StatFs(baseDir);
+
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
+      return stat.getAvailableBlocksLong() * stat.getBlockSizeLong();
+    } else {
+      //noinspection deprecation
+      return (long) stat.getAvailableBlocks() * stat.getBlockSize();
+    }
+  }
 
   /**
    * Called when the activity is first created.
    */
   @Override
-  @SuppressWarnings("deprecation")
   public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
 
@@ -91,7 +96,6 @@ public class BInstallerActivity extends Activity {
   }
 
   @Override
-  @SuppressWarnings("deprecation")
   protected Dialog onCreateDialog(int id) {
     AlertDialog.Builder builder;
     switch (id) {
@@ -114,19 +118,10 @@ public class BInstallerActivity extends Activity {
     }
   }
 
-  @SuppressWarnings("deprecation")
   public void showConfirmDelete() {
     showDialog(DIALOG_CONFIRM_DELETE_ID);
   }
 
-  private void showNewDialog(int id) {
-    if (dialogIds.contains(id)) {
-      removeDialog(id);
-    }
-    dialogIds.add(id);
-    showDialog(id);
-  }
-
   public class DownloadReceiver extends BroadcastReceiver {
 
     @Override
@@ -138,15 +133,4 @@ public class BInstallerActivity extends Activity {
       }
     }
   }
-
-
-  static public long getAvailableSpace(String baseDir) {
-    StatFs stat = new StatFs(baseDir);
-
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
-      return stat.getAvailableBlocksLong() * stat.getBlockSizeLong();
-    } else {
-      return stat.getAvailableBlocks() * stat.getBlockSize();
-    }
-  }
 }
diff --git a/brouter-routing-app/src/main/java/btools/routingapp/BInstallerView.java b/brouter-routing-app/src/main/java/btools/routingapp/BInstallerView.java
index a209bf7..d3c3199 100644
--- a/brouter-routing-app/src/main/java/btools/routingapp/BInstallerView.java
+++ b/brouter-routing-app/src/main/java/btools/routingapp/BInstallerView.java
@@ -28,6 +28,13 @@ public class BInstallerView extends View {
   private static final int MASK_INSTALLED_RD5 = 4;
   private static final int MASK_CURRENT_RD5 = 8;
   public static boolean downloadCanceled = false;
+  private final int imgwOrig;
+  private final int imghOrig;
+  private final float scaleOrig;
+  private final int imgw;
+  private final int imgh;
+  private final float[] testVector = new float[2];
+  private final Matrix matText;
   Paint pnt_1 = new Paint();
   Paint pnt_2 = new Paint();
   Paint paint = new Paint();
@@ -35,16 +42,10 @@ public class BInstallerView extends View {
   int btnh = 40;
   int btnw = 160;
   float tx, ty;
-  private final int imgwOrig;
-  private final int imghOrig;
-  private final float scaleOrig;
-  private final int imgw;
-  private final int imgh;
   private float lastDownX;
   private float lastDownY;
   private Bitmap bmp;
   private float viewscale;
-  private final float[] testVector = new float[2];
   private int[] tileStatus;
   private boolean tilesVisible = false;
   private long availableSize;
@@ -57,7 +58,6 @@ public class BInstallerView extends View {
   private long rd5Tiles = 0;
   private long delTiles = 0;
   private Matrix mat;
-  private final Matrix matText;
 
   public BInstallerView(Context context) {
     super(context);