Added additional logging to track down why the NVIDIA controller doesn't send the back button

android-project/app/src/main/java/org/libsdl/app/SDLActivity.java

@@ -872,7 +872,7 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
             }
         }
 
-        Log.v("SDL", "setOrientation() requestedOrientation=" + req + " width=" + w +" height="+ h +" resizable=" + resizable + " hint=" + hint);
+        Log.v(TAG, "setOrientation() requestedOrientation=" + req + " width=" + w +" height="+ h +" resizable=" + resizable + " hint=" + hint);
         mSingleton.setRequestedOrientation(req);
     }
 
@@ -1082,7 +1082,7 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
             /* environment variables set! */
             return true;
         } catch (Exception e) {
-           Log.v("SDL", "exception " + e.toString());
+           Log.v(TAG, "exception " + e.toString());
         }
         return false;
     }
@@ -1868,6 +1868,19 @@ class SDLSurface extends SurfaceView implements SurfaceHolder.Callback,
         int deviceId = event.getDeviceId();
         int source = event.getSource();
 
+        if (source == InputDevice.SOURCE_UNKNOWN) {
+            InputDevice device = InputDevice.getDevice(deviceId);
+            if (device != null) {
+                source = device.getSources();
+            }
+        }
+
+//		if (event.getAction() == KeyEvent.ACTION_DOWN) {
+//			Log.v("SDL", "key down: " + keyCode + ", deviceId = " + deviceId + ", source = " + source);
+//		} else if (event.getAction() == KeyEvent.ACTION_UP) {
+//			Log.v("SDL", "key up: " + keyCode + ", deviceId = " + deviceId + ", source = " + source);
+//		}
+
         // Dispatch the different events depending on where they come from
         // Some SOURCE_JOYSTICK, SOURCE_DPAD or SOURCE_GAMEPAD are also SOURCE_KEYBOARD
         // So, we try to process them as JOYSTICK/DPAD/GAMEPAD events first, if that fails we try them as KEYBOARD
@@ -1888,24 +1901,14 @@ class SDLSurface extends SurfaceView implements SurfaceHolder.Callback,
             }
         }
 
-        if (source == InputDevice.SOURCE_UNKNOWN) {
-            InputDevice device = InputDevice.getDevice(deviceId);
-            if (device != null) {
-                source = device.getSources();
-            }
-        }
-
         if ((source & InputDevice.SOURCE_KEYBOARD) != 0) {
             if (event.getAction() == KeyEvent.ACTION_DOWN) {
-                //Log.v("SDL", "key down: " + keyCode);
                 if (SDLActivity.isTextInputEvent(event)) {
                     SDLInputConnection.nativeCommitText(String.valueOf((char) event.getUnicodeChar()), 1);
                 }
                 SDLActivity.onNativeKeyDown(keyCode);
                 return true;
-            }
-            else if (event.getAction() == KeyEvent.ACTION_UP) {
-                //Log.v("SDL", "key up: " + keyCode);
+            } else if (event.getAction() == KeyEvent.ACTION_UP) {
                 SDLActivity.onNativeKeyUp(keyCode);
                 return true;
             }