commit 9b1d062b0f1c4714883444df874e1a078764caa1
author Adam Cohen <adamcohen@google.com> Wed May 21 19:01:57 2014 -0700
committer Adam Cohen <adamcohen@google.com> Wed May 21 19:04:49 2014 -0700
tree ef409f620d7e2479892d3cdb29e38f330eb0fd5a
parent ea90f83e248086b91dbbc7969059f6887190b2a2

Make sure we can handle database downgrade (by wiping and starting fresh)

issue 15144138

Change-Id: I59aad7445d2aaaaede1cba6754e047f05a2859ae

src/com/android/launcher3/LauncherProvider.java

diff --git a/src/com/android/launcher3/LauncherProvider.java b/src/com/android/launcher3/LauncherProvider.java
index 55a0f5e..bbc75b8 100644
--- a/src/com/android/launcher3/LauncherProvider.java
+++ b/src/com/android/launcher3/LauncherProvider.java
@@ -873,6 +873,17 @@
             }
         }
 
+        @Override
+        public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+            // This shouldn't happen -- throw our hands up in the air and start over.
+            Log.w(TAG, "Database version downgrade from: " + oldVersion + " to " + newVersion +
+                    ". Wiping databse.");
+
+            db.execSQL("DROP TABLE IF EXISTS " + TABLE_FAVORITES);
+            db.execSQL("DROP TABLE IF EXISTS " + TABLE_WORKSPACE_SCREENS);
+            onCreate(db);
+        }
+
         private boolean addProfileColumn(SQLiteDatabase db) {
             db.beginTransaction();
             try {