AccessibilityRequestPreparer shouldn't crash if the view is released before the preparer is added or removed.
AccessibilityRequestPreparer holds onto a weak reference of the view.
When it is added or removed, AccessibilityManager uses the views accessibilityId to maintain the lists of requestPreparers.
But, it is completely possible, that a view is released before requestPreparer is removed, or even added, and that will cause bad things.
Instead, store the id on the preparer also.
Change-Id: I5d489c061cd8039d066a81f4a927c1d8185d4f06
Fix: 123047944
Test: CtsAccessibilityServiceTestCases
diff --git a/core/java/android/view/accessibility/AccessibilityManager.java b/core/java/android/view/accessibility/AccessibilityManager.java
index 06207a9..0f0d3c9 100644
--- a/core/java/android/view/accessibility/AccessibilityManager.java
+++ b/core/java/android/view/accessibility/AccessibilityManager.java
@@ -848,7 +848,7 @@
if (mRequestPreparerLists == null) {
mRequestPreparerLists = new SparseArray<>(1);
}
- int id = preparer.getView().getAccessibilityViewId();
+ int id = preparer.getAccessibilityViewId();
List<AccessibilityRequestPreparer> requestPreparerList = mRequestPreparerLists.get(id);
if (requestPreparerList == null) {
requestPreparerList = new ArrayList<>(1);
@@ -864,7 +864,7 @@
if (mRequestPreparerLists == null) {
return;
}
- int viewId = preparer.getView().getAccessibilityViewId();
+ int viewId = preparer.getAccessibilityViewId();
List<AccessibilityRequestPreparer> requestPreparerList = mRequestPreparerLists.get(viewId);
if (requestPreparerList != null) {
requestPreparerList.remove(preparer);
diff --git a/core/java/android/view/accessibility/AccessibilityRequestPreparer.java b/core/java/android/view/accessibility/AccessibilityRequestPreparer.java
index 4dcb187..8108d37 100644
--- a/core/java/android/view/accessibility/AccessibilityRequestPreparer.java
+++ b/core/java/android/view/accessibility/AccessibilityRequestPreparer.java
@@ -51,6 +51,7 @@
public @interface RequestTypes {}
private final WeakReference<View> mViewRef;
+ private final int mAccessibilityViewId;
private final int mRequestTypes;
/**
@@ -68,6 +69,7 @@
throw new IllegalStateException("View must be attached to a window");
}
mViewRef = new WeakReference<>(view);
+ mAccessibilityViewId = view.getAccessibilityViewId();
mRequestTypes = requestTypes;
view.addOnAttachStateChangeListener(new ViewAttachStateListener());
}
@@ -118,4 +120,8 @@
v.removeOnAttachStateChangeListener(this);
}
}
+
+ int getAccessibilityViewId() {
+ return mAccessibilityViewId;
+ }
}