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                                            刘威振

YYTextView使用autolayout重新计算高度的时候，Text会抖动

这样就可以了： ``` __weak __typeof(self) weakSelf = self; [self.textView addObserverBlockForKeyPath:@"textLayout.textBoundingSize" block:^(id _Nonnull obj, id _Nullable oldVal, id _Nullable newVal) { CGFloat height = [[self.textView textLayout] textBoundingSize].height; weakSelf.textView.height = MIN(kMaxHeight, MAX(50, height));...