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I tried to use the NSNotificationTextViewDidChange ,if the text is equal to @"" or is nil, I will set the text to
placeholder.But that does't work. the placeholder become the text,so that I have to delete it before I input something.
The text was updated successfully, but these errors were encountered:
I tried to use the NSNotificationTextViewDidChange ,if the text is equal to @"" or is nil, I will set the text to
placeholder.But that does't work. the placeholder become the text,so that I have to delete it before I input something.
The text was updated successfully, but these errors were encountered: