1 files changed, 23 insertions, 0 deletions
diff --git a/services/core/java/com/android/server/wm/ActivityRecord.java b/services/core/java/com/android/server/wm/ActivityRecord.java
index 308df2f4e9a0..c2cfe0b7bd92 100644
--- a/services/core/java/com/android/server/wm/ActivityRecord.java
+++ b/services/core/java/com/android/server/wm/ActivityRecord.java
@@ -656,6 +656,12 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
     boolean mLastImeShown;
 
     /**
+     * When set to true, the IME insets will be frozen until the next app becomes IME input target.
+     * @see InsetsPolicy#adjustVisibilityForIme
+     */
+    boolean mImeInsetsFrozenUntilStartInput;
+
+    /**
      * A flag to determine if this AR is in the process of closing or entering PIP. This is needed
      * to help AR know that the app is in the process of closing but hasn't yet started closing on
      * the WM side.
@@ -1363,6 +1369,7 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
         }
         if (newTask != null && isState(RESUMED)) {
             newTask.setResumedActivity(this, "onParentChanged");
+            mImeInsetsFrozenUntilStartInput = false;
         }
 
         if (rootTask != null && rootTask.topRunningActivity() == this) {
@@ -4759,6 +4766,7 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
                     && imeInputTarget.getWindow().mActivityRecord == this
                     && mDisplayContent.mInputMethodWindow != null
                     && mDisplayContent.mInputMethodWindow.isVisible();
+            mImeInsetsFrozenUntilStartInput = true;
         }
 
         final DisplayContent displayContent = getDisplayContent();
@@ -5877,6 +5885,14 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
             // closing activity having to wait until idle timeout to be stopped or destroyed if the
             // next activity won't report idle (e.g. repeated view animation).
             mTaskSupervisor.scheduleProcessStoppingAndFinishingActivitiesIfNeeded();
+
+            // If the activity is visible, but no windows are eligible to start input, unfreeze
+            // to avoid permanently frozen IME insets.
+            if (mImeInsetsFrozenUntilStartInput && getWindow(
+                    win -> WindowManager.LayoutParams.mayUseInputMethod(win.mAttrs.flags))
+                    == null) {
+                mImeInsetsFrozenUntilStartInput = false;
+            }
         }
     }
 
@@ -7792,6 +7808,13 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
         }
     }
 
+    @Override
+    void onResize() {
+        // Reset freezing IME insets flag when the activity resized.
+        mImeInsetsFrozenUntilStartInput = false;
+        super.onResize();
+    }
+
     /** Returns true if the configuration is compatible with this activity. */
     boolean isConfigurationCompatible(Configuration config) {
         final int orientation = getRequestedOrientation();