Fix NPE when showing Toast from system process.

The system process has no ApplicationContext and consequently was
returning null. Use the base Context in these cases.

Bug 7673699 fixed.

Change-Id: Ie2ab856bb0baefff44775a12bef7802320f72656

1 files changed, 5 insertions, 2 deletions

diff --git a/core/java/android/widget/Toast.java b/core/java/android/widget/Toast.java
index 485bd37..1d85126 100644
--- a/core/java/android/widget/Toast.java
+++ b/core/java/android/widget/Toast.java
@@ -374,8 +374,11 @@ public class Toast {
                 // remove the old view if necessary
                 handleHide();
                 mView = mNextView;
-                mWM = (WindowManager)mView.getContext().getApplicationContext()
-                        .getSystemService(Context.WINDOW_SERVICE);
+                Context context = mView.getContext().getApplicationContext();
+                if (context == null) {
+                    context = mView.getContext();
+                }
+                mWM = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);
                 // We can resolve the Gravity here by using the Locale for getting
                 // the layout direction
                 final Configuration config = mView.getContext().getResources().getConfiguration();