__unsafe_unretained

Author: jmagman

shell/platform/darwin/ios/framework/Source/FlutterKeyboardManager.mm

@@ -16,12 +16,13 @@ @interface FlutterKeyboardManager ()
 /**
  * The primary responders added by addPrimaryResponder.
  */
-@property(nonatomic, readonly) NSMutableArray<id<FlutterKeyPrimaryResponder>>* primaryResponders;
+@property(nonatomic, copy, readonly)
+    NSMutableArray<id<FlutterKeyPrimaryResponder>>* primaryResponders;
 
 /**
  * The secondary responders added by addSecondaryResponder.
  */
-@property(nonatomic, readonly)
+@property(nonatomic, copy, readonly)
     NSMutableArray<id<FlutterKeySecondaryResponder>>* secondaryResponders;
 
 - (void)dispatchToSecondaryResponders:(nonnull FlutterUIPressProxy*)press
@@ -49,11 +50,6 @@ - (void)addSecondaryResponder:(nonnull id<FlutterKeySecondaryResponder>)responde
   [_secondaryResponders addObject:responder];
 }
 
-- (void)dealloc {
-  [_primaryResponders removeAllObjects];
-  [_secondaryResponders removeAllObjects];
-}
-
 - (void)handlePress:(nonnull FlutterUIPressProxy*)press
          nextAction:(nonnull void (^)())next API_AVAILABLE(ios(13.4)) {
   if (@available(iOS 13.4, *)) {

shell/platform/darwin/ios/framework/Source/FlutterKeyboardManagerTest.mm

@@ -43,10 +43,16 @@ @implementation FlutterKeyboardManagerTest
       OCMStrictProtocolMock(@protocol(FlutterKeyPrimaryResponder));
   OCMStub([mock handlePress:[OCMArg any] callback:[OCMArg any]])
       .andDo((^(NSInvocation* invocation) {
-        __unsafe_unretained FlutterUIPressProxy* press;
-        __unsafe_unretained FlutterAsyncKeyCallback callback;
-        [invocation getArgument:&press atIndex:2];
-        [invocation getArgument:&callback atIndex:3];
+        __unsafe_unretained FlutterUIPressProxy* pressUnsafe;
+        __unsafe_unretained FlutterAsyncKeyCallback callbackUnsafe;
+
+        [invocation getArgument:&pressUnsafe atIndex:2];
+        [invocation getArgument:&callbackUnsafe atIndex:3];
+
+        // Retain the unretained parameters so they can
+        // be run in the perform block when this invocation goes out of scope.
+        FlutterUIPressProxy* press = pressUnsafe;
+        FlutterAsyncKeyCallback callback = callbackUnsafe;
         CFRunLoopPerformBlock(CFRunLoopGetCurrent(),
                               fml::MessageLoopDarwin::kMessageLoopCFRunLoopMode, ^() {
                                 callbackSetter(press, callback);