Fix support for USB OTG.

Properly listen for the Broadcast with an IntentFilter that includes the
path data scheme. Reload the mounted volumes upon ACTION_MEDIA_MOUNTED AND
ACTION_MEDIA_UNMOUNTED.

Change-Id: I71d90978fef05419d912ef2398bf99c23fdefee6
(cherry picked from commit e3922e43c8988c499c85115f1f14bef8c925e1ee)

4 files changed, 25 insertions, 16 deletions

diff --git a/src/com/cyanogenmod/filemanager/activities/NavigationActivity.java b/src/com/cyanogenmod/filemanager/activities/NavigationActivity.java
index b0b5043f..c179a8f9 100644
--- a/src/com/cyanogenmod/filemanager/activities/NavigationActivity.java
+++ b/src/com/cyanogenmod/filemanager/activities/NavigationActivity.java
@@ -22,6 +22,7 @@ import android.app.AlertDialog;
 import android.app.Dialog;
 import android.app.SearchManager;
 import android.content.BroadcastReceiver;
+import android.content.ContentResolver;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
@@ -327,11 +328,9 @@ public class NavigationActivity extends Activity
                         NavigationActivity.this.getCurrentNavigationView().refresh();
                     }
                 } else if (intent.getAction().compareTo(
-                        FileManagerSettings.INTENT_MOUNT_STATUS_CHANGED) == 0) {
-                    onRequestBookmarksRefresh();
-                    removeUnmountedHistory();
-                    removeUnmountedSelection();
-                } else if(intent.getAction().equals(Intent.ACTION_MEDIA_MOUNTED)) {
+                        FileManagerSettings.INTENT_MOUNT_STATUS_CHANGED) == 0 ||
+                            intent.getAction().equals(Intent.ACTION_MEDIA_MOUNTED) ||
+                            intent.getAction().equals(Intent.ACTION_MEDIA_UNMOUNTED)) {
                     onRequestBookmarksRefresh();
                     removeUnmountedHistory();
                     removeUnmountedSelection();
@@ -510,9 +509,15 @@ public class NavigationActivity extends Activity
         filter.addAction(Intent.ACTION_TIME_CHANGED);
         filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
         filter.addAction(FileManagerSettings.INTENT_MOUNT_STATUS_CHANGED);
-        filter.addAction(Intent.ACTION_MEDIA_MOUNTED);
         registerReceiver(this.mNotificationReceiver, filter);
 
+        // This filter needs the file data scheme, so it must be defined separately.
+        IntentFilter newFilter = new IntentFilter();
+        newFilter.addAction(Intent.ACTION_MEDIA_MOUNTED);
+        newFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
+        newFilter.addDataScheme(ContentResolver.SCHEME_FILE);
+        registerReceiver(mNotificationReceiver, newFilter);
+
         // Set the theme before setContentView
         Theme theme = ThemeManager.getCurrentTheme(this);
         theme.setBaseThemeNoActionBar(this);
@@ -1308,7 +1313,7 @@ public class NavigationActivity extends Activity
         try {
             // Recovery sdcards from storage manager
             StorageVolume[] volumes = StorageHelper
-                    .getStorageVolumes(getApplication());
+                    .getStorageVolumes(getApplication(), true);
             for (StorageVolume volume: volumes) {
                 if (volume != null) {
                     String mountedState = volume.getState();
@@ -1565,7 +1570,7 @@ public class NavigationActivity extends Activity
             // Initial directory is the first external sdcard (sdcard, emmc, usb, ...)
             if (!StorageHelper.isPathInStorageVolume(initialDir)) {
                 StorageVolume[] volumes =
-                        StorageHelper.getStorageVolumes(this);
+                        StorageHelper.getStorageVolumes(this, false);
                 if (volumes != null && volumes.length > 0) {
                     initialDir = volumes[0].getPath();
                     //Ensure that initial directory is an absolute directory
diff --git a/src/com/cyanogenmod/filemanager/activities/PickerActivity.java b/src/com/cyanogenmod/filemanager/activities/PickerActivity.java
index faa82e96..2842e96a 100644
--- a/src/com/cyanogenmod/filemanager/activities/PickerActivity.java
+++ b/src/com/cyanogenmod/filemanager/activities/PickerActivity.java
@@ -596,7 +596,7 @@ public class PickerActivity extends Activity
      */
     private void showStorageVolumesPopUp(View anchor) {
         // Create a list (but not checkable)
-        final StorageVolume[] volumes = StorageHelper.getStorageVolumes(PickerActivity.this);
+        final StorageVolume[] volumes = StorageHelper.getStorageVolumes(PickerActivity.this, false);
         List<CheckableItem> descriptions = new ArrayList<CheckableItem>();
         if (volumes != null) {
             int cc = volumes.length;
diff --git a/src/com/cyanogenmod/filemanager/ui/widgets/NavigationView.java b/src/com/cyanogenmod/filemanager/ui/widgets/NavigationView.java
index 9573f682..099f0edb 100644
--- a/src/com/cyanogenmod/filemanager/ui/widgets/NavigationView.java
+++ b/src/com/cyanogenmod/filemanager/ui/widgets/NavigationView.java
@@ -1372,7 +1372,7 @@ BreadcrumbListener, OnSelectionChangedListener, OnSelectionListener, OnRequestRe
 
         //Change to first storage volume
         StorageVolume[] volumes =
-                StorageHelper.getStorageVolumes(getContext());
+                StorageHelper.getStorageVolumes(getContext(), false);
         if (volumes != null && volumes.length > 0) {
             changeCurrentDir(volumes[0].getPath(), false, true, false, null, null);
         }
@@ -1403,7 +1403,7 @@ BreadcrumbListener, OnSelectionChangedListener, OnSelectionListener, OnRequestRe
 
         // Check if the path is owned by one of the storage volumes
         if (!StorageHelper.isPathInStorageVolume(newDir)) {
-            StorageVolume[] volumes = StorageHelper.getStorageVolumes(getContext());
+            StorageVolume[] volumes = StorageHelper.getStorageVolumes(getContext(), false);
             if (volumes != null && volumes.length > 0) {
                 return volumes[0].getPath();
             }
diff --git a/src/com/cyanogenmod/filemanager/util/StorageHelper.java b/src/com/cyanogenmod/filemanager/util/StorageHelper.java
index 9b04a6b3..ed07fd5e 100644
--- a/src/com/cyanogenmod/filemanager/util/StorageHelper.java
+++ b/src/com/cyanogenmod/filemanager/util/StorageHelper.java
@@ -41,11 +41,12 @@ public final class StorageHelper {
      * as first parameter, that AOSP hasn't.
      *
      * @param ctx The current context
+     * @param reload If true, re-query the volumes and do not return the already cached list.
      * @return StorageVolume[] The storage volumes defined in the system
      */
     @SuppressWarnings("boxing")
-    public static synchronized StorageVolume[] getStorageVolumes(Context ctx) {
-        if (sStorageVolumes == null) {
+    public static synchronized StorageVolume[] getStorageVolumes(Context ctx, boolean reload) {
+        if (sStorageVolumes == null || reload) {
             //IMP!! Android SDK doesn't have a "getVolumeList" but is supported by CM10.
             //Use reflect to get this value (if possible)
             try {
@@ -129,7 +130,8 @@ public final class StorageHelper {
     public static boolean isPathInStorageVolume(String path) {
         String fso = FileHelper.getAbsPath(path);
         StorageVolume[] volumes =
-                getStorageVolumes(FileManagerApplication.getInstance().getApplicationContext());
+                getStorageVolumes(FileManagerApplication.getInstance().getApplicationContext(),
+                                  false);
         int cc = volumes.length;
         for (int i = 0; i < cc; i++) {
             StorageVolume vol = volumes[i];
@@ -148,7 +150,8 @@ public final class StorageHelper {
      */
     public static boolean isStorageVolume(String path) {
         StorageVolume[] volumes =
-                getStorageVolumes(FileManagerApplication.getInstance().getApplicationContext());
+                getStorageVolumes(FileManagerApplication.getInstance().getApplicationContext(),
+                                  false);
         int cc = volumes.length;
         for (int i = 0; i < cc; i++) {
             StorageVolume vol = volumes[i];
@@ -169,7 +172,8 @@ public final class StorageHelper {
      */
     public static String getChrootedPath(String path) {
         StorageVolume[] volumes =
-                getStorageVolumes(FileManagerApplication.getInstance().getApplicationContext());
+                getStorageVolumes(FileManagerApplication.getInstance().getApplicationContext(),
+                                  false);
         int cc = volumes.length;
         for (int i = 0; i < cc; i++) {
             StorageVolume vol = volumes[i];