mMaximumObscuringOpacityForTouch should remain valid

set mMaximumObscuringOpacityForTouch to the defaul value in case
that the system settings contains an invalid value.

Merged-In: I4f15a7573913b503635995d26053bed9aa753a45
Change-Id: I4f15a7573913b503635995d26053bed9aa753a45
Test: presubmit
Bug: 274213741

services/core/java/com/android/server/wm/WindowManagerService.java

diff --git a/services/core/java/com/android/server/wm/WindowManagerService.java b/services/core/java/com/android/server/wm/WindowManagerService.java
index 8f1702c..78ed436 100644
--- a/services/core/java/com/android/server/wm/WindowManagerService.java
+++ b/services/core/java/com/android/server/wm/WindowManagerService.java
@@ -913,6 +913,11 @@
             mMaximumObscuringOpacityForTouch = Settings.Global.getFloat(resolver,
                     Settings.Global.MAXIMUM_OBSCURING_OPACITY_FOR_TOUCH,
                     InputManager.DEFAULT_MAXIMUM_OBSCURING_OPACITY_FOR_TOUCH);
+            if (mMaximumObscuringOpacityForTouch < 0.0f
+                    || mMaximumObscuringOpacityForTouch > 1.0f) {
+                mMaximumObscuringOpacityForTouch =
+                        InputManager.DEFAULT_MAXIMUM_OBSCURING_OPACITY_FOR_TOUCH;
+            }
         }
 
         void updateSystemUiSettings(boolean handleChange) {