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系统版本:OpenHarmony-3.2-Release
点击返回按键,时按输入法隐藏,返回返原应用页面返回或应用退出。
OpenHarmony系统解决方案 - 输入法弹出时按返回键原页面返回或应用退出-开源基础软件社区
点击返回按键,仅隐藏输入法。
OpenHarmony系统解决方案 - 输入法弹出时按返回键原页面返回或应用退出-开源基础软件社区
由于输入法应用是InputMethodExtensionAbility,窗口由自己创建,所以返回按键的键值指令会被传递到原有应用上,执行原有应用的返回逻辑。而输入法本身可以控制此逻辑,但现在OpenHarmony中的示例输入法并未控制此逻辑,造成问题。
let keyboardDelegate = inputMethodEngine.getKeyboardDelegate();keyboardDelegate.on('keyUp', (keyEvent) { if (keyEvent.keyCode === 2) { return true; }});
以KikaInput输入法应用为例,修改keyboardDelegate的keyDown和keyUp的两个监听回调。
修改应用工程内文件,路径:entry\src\main\ets\model\KeyboardController.ets
this.mKeyboardDelegate.on('keyDown', (keyEvent) => { if (this.isKeyboardShow && keyEvent.keyCode !== 2) { this.inputHandle.hideKeyboardSelf(); } this.inputHandle.addLog('keyDown: code = ' + keyEvent.keyCode); let result = this.onKeyDown(keyEvent); this.inputHandle.addLog('keyDown: result = ' + result); return result});this.mKeyboardDelegate.on('keyUp', (keyEvent) => { this.inputHandle.addLog('keyUp: code = ' + keyEvent.keyCode); if (this.isKeyboardShow && keyEvent.keyCode === 2) { this.inputHandle.hideKeyboardSelf(); return true; } let result = this.onKeyUp(keyEvent); this.inputHandle.addLog('keyUp: result = ' + result); return result});
抓取点击返回按键时Ace的Log日志,发现在点击返回时触发了原应用的ProcessBackPressed函数,导致原页面返回或应用退出。
08-05 23:44:44.248 1718 1718 I C03900/Ace: [ui_content_impl.cpp(ProcessKeyEvent)-(-1)] UIContentImpl: OnKeyUp called,touchEvent info: keyCode is 2,keyAction is 2, keyActionTime is 6001473108-05 23:44:44.248 1287 1287 I C03900/Ace: [pan_recognizer.cpp(HandleTouchDownEvent)-(3)] pan recognizer receives 0 touch down event, begin to detect pan event08-05 23:44:44.248 1287 1287 I C03900/Ace: [flutter_ace_view.cpp(operator())-(3)] Mark 0 id Touch Event Processed08-05 23:44:44.250 1718 1718 I C03900/Ace: [event_manager.cpp(DispatchKeyEventNG)-(0)] Use platform to handle this event08-05 23:44:44.260 1718 1757 I C03900/Ace: [on_text_changed_listener_impl.cpp(SendKeyboardInfo)-(-1)] [OnTextChangedListenerImpl] KeyboardStatus status: 108-05 23:44:44.260 1718 1757 I C03900/Ace: [on_text_changed_listener_impl.cpp(HandleFunctionKey)-(-1)] [OnTextChangedListenerImpl] Handle function key 008-05 23:44:44.260 1718 1718 E C03900/Ace: [on_text_changed_listener_impl.cpp(operator())-(0)] TextInputAction is not support: 008-05 23:44:44.277 1718 1720 I C03900/Ace: [ui_content_impl.cpp(OnSizeChange)-(-1)] UIContent::OccupiedAreaChange rect:Rect (0.00, 0.00) - [0.00 x 0.00] type: 008-05 23:44:44.282 1584 1584 I C03900/Ace: [ui_content_impl.cpp(Background)-(-1)] UIContentImpl: window background08-05 23:44:44.282 1718 1718 I C03900/Ace: [pipeline_context.cpp(OnVirtualKeyboardHeightChange)-(0)] OnVirtualKeyboardAreaChange positionY:46.000000 safeArea:1136.000000 offsetFix:-545.000000, keyboardHeight 0.00000008-05 23:44:44.282 1584 1584 I C03900/Ace: [jsi_declarative_engine.cpp(UpdateApplicationState)-(0)] JsiDeclarativeEngine UpdateApplicationState, packageName , state: 308-05 23:44:44.282 1718 1718 I C03900/Ace: [pipeline_context.cpp(SetRootRect)-(0)] SetRootRect width 720.000000, height 1136.000000, 0.00000008-05 23:44:44.289 1584 1584 I C03900/Ace: [pipeline_context.cpp(OnVirtualKeyboardHeightChange)-(0)] OnVirtualKeyboardAreaChange positionY:0.000000 safeArea:550.000000 offsetFix:-275.00000008-05 23:44:44.298 1584 1584 I C03900/Ace: [pipeline_context.cpp(FlushAnimation)-(0)] scheduleTasks size08-05 23:44:44.335 1287 1287 I C03900/Ace: [pan_recognizer.cpp(HandleTouchUpEvent)-(3)] pan recognizer receives 0 touch up event08-05 23:44:44.335 1718 1718 I C03900/Ace: [ui_content_impl.cpp(ProcessBackPressed)-(-1)] UIContentImpl: ProcessBackPressed: Platform::AceContainer::OnBackPressed called08-05 23:44:44.335 1718 1718 I C03900/Ace: [ui_content_impl.cpp(ProcessBackPressed)-(-1)] UIContentImpl::ProcessBackPressed AceContainer08-05 23:44:44.336 1718 1718 W C03900/Ace: [pipeline_context.cpp(GetNavDestinationBackButtonNode)-(0)] navigationNode is null, return on line 72508-05 23:44:44.337 1718 1718 E C03900/Ace: [js_view_functions.cpp(ExecuteFunctionWithReturn)-(0)] Error calling onBackPress08-05 23:44:44.340 1718 1718 W C03900/Ace: [grid_container_info.cpp(BuildColumnWidth)-(0)] container width not changed.08-05 23:44:44.358 1718 1718 W C03900/Ace: [grid_container_info.cpp(BuildColumnWidth)-(0)] container width not changed.08-05 23:44:44.360 1287 1287 I C03900/Ace: [flutter_ace_view.cpp(operator())-(3)] Mark 0 id Touch Event Processed08-05 23:44:44.363 1718 1718 W C03900/Ace: [rosen_render_context.cpp(ClearFocusState)-(0)] focusStateModifier_ is null, return on line 108308-05 23:44:44.377 1718 1718 I C03900/Ace: [pipeline_context.cpp(OnBackPressed)-(0)] CallRouterBackToPopPage(): frontend accept08-05 23:44:44.377 1718 1718 I C03900/Ace: [ui_content_impl.cpp(ProcessBackPressed)-(-1)] UIContentImpl::ProcessBackPressed AceContainer return true08-05 23:44:44.381 1718 1718 W C03900/Ace: [grid_container_info.cpp(BuildColumnWidth)-(0)] container width not changed.08-05 23:44:44.397 1718 1718 W C03900/Ace: [grid_container_info.cpp(BuildColumnWidth)-(0)] container width not changed.08-05 23:44:44.407 1718 1718 W C03900/Ace: [rosen_render_context.cpp(ClearFocusState)-(0)] focusStateModifier_ is null, return on line 108308-05 23:44:44.745 1718 1718 I C03900/Ace: [stage_manager.cpp(operator())-(0)] pageTransition in finish08-05 23:44:44.746 1718 1718 I C03900/Ace: [stage_manager.cpp(operator())-(0)] pageTransition exit finish
追踪返回逻辑,发现是在窗口子系统返回事件回调中触发。
// foundation/window/window_manager/wm/src/window_impl.cppvoid WindowImpl::HandleBackKeyPressedEvent(const std::shared_ptr<MMI::KeyEvent>& keyEvent){ std::shared_ptr<IInputEventConsumer> inputEventConsumer; { std::lock_guard<std::recursive_mutex> lock(mutex_); inputEventConsumer = inputEventConsumer_; } bool isConsumed = false; if (inputEventConsumer != nullptr) { WLOGFD("Transfer back key event to inputEventConsumer"); isConsumed = inputEventConsumer->OnInputEvent(keyEvent); } else if (uiContent_ != nullptr) { WLOGFD("Transfer back key event to uiContent"); isConsumed = uiContent_->ProcessBackPressed(); } else { WLOGFE("There is no back key event consumer"); } ···}
抓取窗口子系统日志,发现窗口子系统会把键值分发到输入法(dispatch keyEvent to input method)后再分解输入法的返回分发到Ace(dispatch keyEvent to ACE)中进行处理,当按键抬起时会触发ProcessBackPressed函数。
08-05 23:59:52.185 1287 1287 D C04200/WindowInputChannel: <78>HandlePointerEvent: Receive pointer event, windowId: 7, action: 208-05 23:59:52.186 1287 1287 D C04200/WindowImpl: <2526>ConsumePointerEvent: WMS process point down, window: [name:SystemUi_NavigationBar, id:7], action: 208-05 23:59:52.191 1287 1287 D C04200/WindowImpl: <2443>TransferPointerEvent: Transfer pointer event to uiContent08-05 23:59:52.219 1718 1718 D C04200/WindowInputChannel: <44>HandleKeyEvent: Receive key event, windowId: 12, keyCode: 208-05 23:59:52.219 1718 1718 I C04200/WindowInputChannel: <104>IsKeyboardEvent: isKeyFN: 0, isKeyboard: 008-05 23:59:52.219 1718 1718 I C04200/WindowInputChannel: <61>HandleKeyEvent: dispatch keyEvent to input method08-05 23:59:52.224 1718 1718 I C04200/WindowInputChannel: <66>HandleKeyEvent: dispatch keyEvent to ACE08-05 23:59:52.224 1718 1718 D C04200/WindowImpl: <2161>ConsumeKeyEvent: KeyCode: 2, action: 208-05 23:59:52.224 1718 1718 D C04200/WindowImpl: <2174>ConsumeKeyEvent: Transfer key event to uiContent08-05 23:59:52.235 1584 1584 D C04200/WindowImpl: <1376>Hide: [Client] Window [name:imeWindow, id:5] Hide, reason:0, withAnimation:008-05 23:59:52.236 1584 1592 D C04200/WindowImpl: <2749>UpdateActiveStatus: window active status: 0, id: 508-05 23:59:52.237 1718 1720 D C04200/WindowImpl: <2749>UpdateActiveStatus: window active status: 1, id: 1208-05 23:59:52.237 1718 1720 D C04200/WindowImpl: <2743>UpdateOccupiedAreaChangeInfo: Window Update OccupiedArea, id: 1208-05 23:59:52.284 1287 1287 D C04200/WindowInputChannel: <78>HandlePointerEvent: Receive pointer event, windowId: 7, action: 408-05 23:59:52.284 1287 1287 D C04200/WindowImpl: <2416>ConsumeMoveOrDragEvent: [Client Point Up/Cancel]: windowId: 7, action: 4, sourceType: 2, startMove: 0, startDrag: 008-05 23:59:52.284 1287 1287 D C04200/WindowImpl: <2443>TransferPointerEvent: Transfer pointer event to uiContent08-05 23:59:52.308 1718 1718 D C04200/WindowInputChannel: <44>HandleKeyEvent: Receive key event, windowId: 12, keyCode: 208-05 23:59:52.308 1718 1718 I C04200/WindowInputChannel: <104>IsKeyboardEvent: isKeyFN: 0, isKeyboard: 008-05 23:59:52.308 1718 1718 I C04200/WindowInputChannel: <61>HandleKeyEvent: dispatch keyEvent to input method08-05 23:59:52.320 1718 1718 I C04200/WindowInputChannel: <66>HandleKeyEvent: dispatch keyEvent to ACE08-05 23:59:52.321 1718 1718 D C04200/WindowImpl: <2161>ConsumeKeyEvent: KeyCode: 2, action: 308-05 23:59:52.321 1718 1718 D C04200/WindowImpl: <2129>HandleBackKeyPressedEvent: Transfer back key event to uiContent08-05 23:59:52.362 1718 1718 D C04200/WindowImpl: <2135>HandleBackKeyPressedEvent: Back key event is consumed or it is not a main window08-05 23:59:52.731 1584 1584 D C04200/WindowImpl: <1376>Hide: [Client] Window [name:imeWindow, id:5] Hide, reason:0, withAnimation:008-05 23:59:52.731 1584 1584 D C04200/WindowImpl: <1389>Hide: window is already hidden id: 508-05 23:59:52.736 1584 1584 D C04200/WindowImpl: <1376>Hide: [Client] Window [name:imeWindow, id:5] Hide, reason:0, withAnimation:008-05 23:59:52.736 1584 1584 D C04200/WindowImpl: <1389>Hide: window is already hidden id: 5
根据上述日志查看分发代码逻辑,发现如果输入法在分发按键事件时,如果返回true则事件不会再向Ace分发。
// foundation/window/window_manager/wm/src/window_input_channel.cppvoid WindowInputChannel::HandleKeyEvent(std::shared_ptr<MMI::KeyEvent>& keyEvent){ ··· bool inputMethodHasProcessed = false;#ifdef IMF_ENABLE bool isKeyboardEvent = IsKeyboardEvent(keyEvent); if (isKeyboardEvent) { WLOGFI("dispatch keyEvent to input method"); inputMethodHasProcessed = MiscServices::InputMethodController::GetInstance()->dispatchKeyEvent(keyEvent); }#endif // IMF_ENABLE if (!inputMethodHasProcessed) { WLOGFI("dispatch keyEvent to ACE"); window_->ConsumeKeyEvent(keyEvent); }}
追踪输入法分发事件代码,发现返回值是触发keyboardDelegate.on(type)回调后返回的值。而keyboardDelegate在输入法应用中被使用,所以改动输入法应用的回调逻辑即可修复此现象。
// base/inputmethod/imf/interfaces/kits/js/napi/inputmethodability/js_keyboard_delegate_setting.cppbool JsKeyboardDelegateSetting::OnKeyEvent(int32_t keyCode, int32_t keyStatus){ IMSA_HILOGD("run in"); KeyEventPara para{ keyCode, keyStatus, false }; std::string type = (keyStatus == ARGC_TWO ? "keyDown" : "keyUp"); auto isDone = std::make_shared<BlockData<bool>>(MAX_TIMEOUT, false); uv_work_t *work = GetUVwork(type, [¶, isDone](UvEntry &entry) { entry.keyEventPara = { para.keyCode, para.keyStatus, para.isOnKeyEvent }; entry.isDone = isDone; }); if (work == nullptr) { IMSA_HILOGE("failed to get uv work"); return false; } uv_queue_work( loop_, work, [](uv_work_t *work) { }, [](uv_work_t *work, int status) { std::shared_ptr<UvEntry> entry(static_cast<UvEntry *>(work->data), [work](UvEntry *data) { delete data; delete work; }); auto getKeyEventProperty = [entry](napi_value *args, uint8_t argc, std::shared_ptr<JSCallbackObject> item) -> bool { if (argc == 0) { return false; } napi_value jsObject = GetResultOnKeyEvent(item->env_, entry->keyEventPara.keyCode, entry->keyEventPara.keyStatus); if (jsObject == nullptr) { IMSA_HILOGE("get GetResultOnKeyEvent failed: jsObject is nullptr"); return false; } args[ARGC_ZERO] = { jsObject }; return true; }; bool isOnKeyEvent = JsUtils::TraverseCallback(entry->vecCopy, ARGC_ONE, getKeyEventProperty); entry->isDone->SetValue(isOnKeyEvent); }); return isDone->GetValue();}
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责任编辑:jianghua 来源: 51CTO 开源基础软件社区 鸿蒙输入法(责任编辑:时尚)
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