Bluetooth: Check for mPanService before changing tethering state

Checking for mPanService before changing OR checking tethering state,
otherwise it will lead to application crash while checking isTetheringOn
OR changing tethering state.

Change-Id: I00844c03cdb8616118c1d50d7d31c75e51f0ef9b

1 files changed, 14 insertions, 8 deletions

diff --git a/core/java/android/bluetooth/BluetoothPan.java b/core/java/android/bluetooth/BluetoothPan.java
index 4f81f9863c54..eb6166acee30 100644
--- a/core/java/android/bluetooth/BluetoothPan.java
+++ b/core/java/android/bluetooth/BluetoothPan.java
@@ -333,19 +333,25 @@ public final class BluetoothPan implements BluetoothProfile {
 
     public void setBluetoothTethering(boolean value) {
         if (DBG) log("setBluetoothTethering(" + value + ")");
-        try {
-            mPanService.setBluetoothTethering(value);
-        } catch (RemoteException e) {
-            Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
+
+        if (mPanService != null && isEnabled()) {
+            try {
+                mPanService.setBluetoothTethering(value);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
+            }
         }
     }
 
     public boolean isTetheringOn() {
         if (VDBG) log("isTetheringOn()");
-        try {
-            return mPanService.isTetheringOn();
-        } catch (RemoteException e) {
-            Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
+
+        if (mPanService != null && isEnabled()) {
+            try {
+                return mPanService.isTetheringOn();
+            } catch (RemoteException e) {
+                Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable()));
+            }
         }
         return false;
     }