解决听写/自定义文本视图错误

Question

我有一个实现UIKeyInput 并覆盖shouldBecomeFirstResponder 以返回YES 的视图。点击此视图时，键盘会弹出。如果用户点击听写按钮，按下完成，然后尝试关闭键盘，应用程序崩溃：

Fatal Exception: NSInternalInconsistencyException NSInternalInconsistencyException
We were never set up properly to stream in this document.

我想知道是否有人知道解决此错误的方法？我尝试实现UITextInput 并将听写相关方法留空，这确实有效。但是，UITextInput 正在访问我的 insertText 方法，当用户尝试使用听写并放入垃圾邮件时。我还没有准备好实施听写，所以我现在只想通过某种解决方法来禁用它。任何意见将不胜感激！

Answer 1

实际上，实现UITextInput 解决了这个问题。当用户成功听写时，它只会向您的 insertText 方法发送一个空格（不完全确定如何让听写在自定义文本视图中正常工作，现在我只想修复这个错误）。下面我列出了您必须为UITextInput 使用的所有方法和属性，以节省您一些时间：

属性：

@property(nonatomic, readonly) UITextPosition *beginningOfDocument;
@property(nonatomic, readonly) UITextPosition *endOfDocument;
@property(nonatomic, assign) id<UITextInputDelegate> inputDelegate;
@property(nonatomic, readonly) UITextRange *markedTextRange;
@property(nonatomic, copy) NSDictionary *markedTextStyle;
@property(readwrite, copy) UITextRange *selectedTextRange;
@property(nonatomic, readonly) id<UITextInputTokenizer> tokenizer;

方法：

- (UITextWritingDirection)baseWritingDirectionForPosition:(UITextPosition *)position inDirection:(UITextStorageDirection)direction
{
    return nil;
}

- (CGRect)caretRectForPosition:(UITextPosition *)position
{
    return CGRectZero;
}

- (void)unmarkText
{

}

- (UITextRange *)characterRangeAtPoint:(CGPoint)point
{
    return nil;
}
- (UITextRange *)characterRangeByExtendingPosition:(UITextPosition *)position inDirection:(UITextLayoutDirection)direction
{
    return nil;
}
- (UITextPosition *)closestPositionToPoint:(CGPoint)point
{
    return nil;
}
- (UITextPosition *)closestPositionToPoint:(CGPoint)point withinRange:(UITextRange *)range
{
    return nil;
}
- (NSComparisonResult)comparePosition:(UITextPosition *)position toPosition:(UITextPosition *)other
{
    return nil;
}
- (void)dictationRecognitionFailed
{
}
- (void)dictationRecordingDidEnd
{
}
- (CGRect)firstRectForRange:(UITextRange *)range
{
    return CGRectZero;
}

- (CGRect)frameForDictationResultPlaceholder:(id)placeholder
{
    return CGRectZero;
}
- (void)insertDictationResult:(NSArray *)dictationResult
{
}
- (id)insertDictationResultPlaceholder
{
    return nil;
}

- (NSInteger)offsetFromPosition:(UITextPosition *)fromPosition toPosition:(UITextPosition *)toPosition
{
    return nil;
}
- (UITextPosition *)positionFromPosition:(UITextPosition *)position inDirection:(UITextLayoutDirection)direction offset:(NSInteger)offset
{
    return nil;
}
- (UITextPosition *)positionFromPosition:(UITextPosition *)position offset:(NSInteger)offset
{
    return nil;
}

- (UITextPosition *)positionWithinRange:(UITextRange *)range farthestInDirection:(UITextLayoutDirection)direction
{
    return nil;
}
- (void)removeDictationResultPlaceholder:(id)placeholder willInsertResult:(BOOL)willInsertResult
{
}
- (void)replaceRange:(UITextRange *)range withText:(NSString *)text
{
}
- (NSArray *)selectionRectsForRange:(UITextRange *)range
{
    return nil;
}
- (void)setBaseWritingDirection:(UITextWritingDirection)writingDirection forRange:(UITextRange *)range
{
}
- (void)setMarkedText:(NSString *)markedText selectedRange:(NSRange)selectedRange
{
}

- (NSString *)textInRange:(UITextRange *)range
{
    return nil;
}
- (UITextRange *)textRangeFromPosition:(UITextPosition *)fromPosition toPosition:(UITextPosition *)toPosition
{
    return nil;
}