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ios - UITextInput 听写在文本前插入空格

在 UE4 中有 IOSView 继承 UIView interface FIOSView : UIView <UIKeyInput, UITextInput> 正如你可以看到 UE4 手动处理键盘输入。如果我在完成时开始听写输入，它会调用 (void)insertText:(NSString *)theText3 次：

  1. 它从UIDictationLandingView::StartLandingIfNecessary
  2. 它插入1个空格UIDictationController finishDictationRecognitionWithPhrases:languageModel:correctionIdentifier
  3. 它插入文本
    我的问题是为什么它被调用 3 次？

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