Fix android black screen crash

Change-Id: I7a0eb121ff151b8b6e8f824ee8dbab8d99b73499

2 files changed, 8 insertions, 0 deletions

diff --git a/android/src/org/rockbox/RockboxActivity.java b/android/src/org/rockbox/RockboxActivity.java
index a6604418ed..8004046c1b 100644
--- a/android/src/org/rockbox/RockboxActivity.java
+++ b/android/src/org/rockbox/RockboxActivity.java
@@ -111,6 +111,7 @@ public class RockboxActivity extends Activity
     {
         super.onResume();
         setVisible(true);
+        setServiceActivity(true);
     }
     
     /* this is also called when the backlight goes off,
diff --git a/android/src/org/rockbox/RockboxFramebuffer.java b/android/src/org/rockbox/RockboxFramebuffer.java
index 405a771274..9c4c6a5dc3 100644
--- a/android/src/org/rockbox/RockboxFramebuffer.java
+++ b/android/src/org/rockbox/RockboxFramebuffer.java
@@ -61,6 +61,9 @@ public class RockboxFramebuffer extends SurfaceView
     {
         SurfaceHolder holder = getHolder();                            
         Canvas c = holder.lockCanvas();
+        if (c == null)
+                        return;
+
         btm.copyPixelsFromBuffer(framebuffer);
         synchronized (holder)
         { /* draw */
@@ -73,6 +76,10 @@ public class RockboxFramebuffer extends SurfaceView
     {
         SurfaceHolder holder = getHolder();         
         Canvas c = holder.lockCanvas(dirty);
+        
+        if (c == null)
+                        return;
+
         /* can't copy a partial buffer, but it doesn't make a noticeable difference anyway */
         btm.copyPixelsFromBuffer(framebuffer);
         synchronized (holder)