When deleting all tracks, also disable sync to Google Drive.

MyTracks/res/values/strings.xml

@@ -2405,9 +2405,9 @@ limitations under the License.
 
   <!-- Track List -->
   <string name="track_list_delete_all_confirm_message"
-    translation_description="When deleting all the tracks, the confirmation dialog message informing
-      the user that all tracks and markers will be permanently deleted from the device.">
-    All tracks and markers will be permanently deleted from the device.
+    translation_description="When deleting all the tracks, the confirmation dialog message.">
+    All tracks and markers will be permanently deleted from the device. This will also disable
+    Google Drive sync if it is enabled.
   </string>
   <string name="track_list_empty_message"
     translation_description="When the track list is empty, the message informing the user to click

MyTracks/src/com/google/android/apps/mytracks/content/MyTracksProvider.java

@@ -208,7 +208,8 @@ public class MyTracksProvider extends ContentProvider {
           getContext(), R.string.drive_sync_key, PreferencesUtils.DRIVE_SYNC_DEFAULT);
       if (driveSync) {
         driveIds = where != null ? getDriveIds(null, where, selectionArgs)
-            : getDriveIds(new String[] { TracksColumns.DRIVEID }, SyncUtils.DRIVE_ID_TRACKS_BY_ME_QUERY, null);
+            : getDriveIds(
+                new String[] { TracksColumns.DRIVEID }, SyncUtils.DRIVE_ID_TRACKS_QUERY, null);
       }
     }
 

MyTracks/src/com/google/android/apps/mytracks/fragments/DeleteAllTrackDialogFragment.java

@@ -17,7 +17,9 @@
 package com.google.android.apps.mytracks.fragments;
 
 import com.google.android.apps.mytracks.content.MyTracksProviderUtils;
+import com.google.android.apps.mytracks.io.sync.SyncUtils;
 import com.google.android.apps.mytracks.util.DialogUtils;
+import com.google.android.apps.mytracks.util.PreferencesUtils;
 import com.google.android.maps.mytracks.R;
 
 import android.app.Dialog;
@@ -47,7 +49,16 @@ public class DeleteAllTrackDialogFragment extends DialogFragment {
             new Thread(new Runnable() {
               @Override
               public void run() {
+                PreferencesUtils.setBoolean(
+                    activity, R.string.drive_sync_key, PreferencesUtils.DRIVE_SYNC_DEFAULT);
+                SyncUtils.disableSync(activity);
                 MyTracksProviderUtils.Factory.get(activity).deleteAllTracks();
+                PreferencesUtils.setLong(activity, R.string.drive_largest_change_id_key,
+                    PreferencesUtils.DRIVE_LARGEST_CHANGE_ID_DEFAULT);
+
+                // Clear the drive_deleted_list_key last
+                PreferencesUtils.setString(activity, R.string.drive_deleted_list_key,
+                    PreferencesUtils.DRIVE_DELETED_LIST_DEFAULT);
               }
             }).start();
           }

MyTracks/src/com/google/android/apps/mytracks/io/sync/SyncUtils.java

@@ -73,10 +73,6 @@ public class SyncUtils {
   public static final String DRIVE_ID_TRACKS_QUERY = TracksColumns.DRIVEID + " IS NOT NULL AND "
       + TracksColumns.DRIVEID + "!=''";
 
-  // Get tracks with drive id that are owned by me, not tracks ashared with me.
-  public static final String DRIVE_ID_TRACKS_BY_ME_QUERY = DRIVE_ID_TRACKS_QUERY + " AND "
-      + TracksColumns.SHAREDWITHME + "!=1";
-
   // Get tracks without drive id
   public static final String NO_DRIVE_ID_TRACKS_QUERY = TracksColumns.DRIVEID + " IS NULL OR "
       + TracksColumns.DRIVEID + "=''";
@@ -224,12 +220,15 @@ public class SyncUtils {
   /**
    * Disables sync.
    * 
-   * @param account the account
+   * @param context the context
    */
-  public static void disableSync(Account account) {
-    ContentResolver.cancelSync(account, SYNC_AUTHORITY);
-    ContentResolver.setIsSyncable(account, SYNC_AUTHORITY, 0);
-    ContentResolver.setSyncAutomatically(account, SYNC_AUTHORITY, false);
+  public static void disableSync(Context context) {
+    Account[] accounts = AccountManager.get(context).getAccountsByType(Constants.ACCOUNT_TYPE);
+    for (Account account : accounts) {
+      ContentResolver.cancelSync(account, SYNC_AUTHORITY);
+      ContentResolver.setIsSyncable(account, SYNC_AUTHORITY, 0);
+      ContentResolver.setSyncAutomatically(account, SYNC_AUTHORITY, false);
+    }
   }
 
   /**

MyTracks/src/com/google/android/apps/mytracks/settings/GoogleSettingsActivity.java

@@ -245,7 +245,7 @@ public class GoogleSettingsActivity extends AbstractSettingsActivity {
     PreferencesUtils.setLong(this, R.string.drive_largest_change_id_key,
         PreferencesUtils.DRIVE_LARGEST_CHANGE_ID_DEFAULT);
     
-    // Clear the driveDeletedList last
+    // Clear the drive_deleted_list_key last
     PreferencesUtils.setString(
         this, R.string.drive_deleted_list_key, PreferencesUtils.DRIVE_DELETED_LIST_DEFAULT);
   }
@@ -259,11 +259,7 @@ public class GoogleSettingsActivity extends AbstractSettingsActivity {
     driveSyncPreference.setChecked(value);
 
     // Turn off everything
-    Account[] accounts = AccountManager.get(GoogleSettingsActivity.this)
-        .getAccountsByType(Constants.ACCOUNT_TYPE);
-    for (Account account : accounts) {
-      SyncUtils.disableSync(account);
-    }
+    SyncUtils.disableSync(this);
 
     if (value) {
 
@@ -271,8 +267,9 @@ public class GoogleSettingsActivity extends AbstractSettingsActivity {
       ContentResolver.setMasterSyncAutomatically(true);
 
       // Enable sync for account
-      String googleAccount = PreferencesUtils.getString(GoogleSettingsActivity.this,
-          R.string.google_account_key, PreferencesUtils.GOOGLE_ACCOUNT_DEFAULT);
+      String googleAccount = PreferencesUtils.getString(
+          this, R.string.google_account_key, PreferencesUtils.GOOGLE_ACCOUNT_DEFAULT);
+      Account[] accounts = AccountManager.get(this).getAccountsByType(Constants.ACCOUNT_TYPE);
       for (Account account : accounts) {
         if (account.name.equals(googleAccount)) {
           SyncUtils.enableSync(account);