简单使用: PlaceholderTextView*textView=[[PlaceholderTextViewalloc]init]; textView.placeholderLabel.font=[UIFontsystemFontOfSize:15]; textView.placeholder=@"请输入文字..."; textView.font=[UIFontsystemFontOfSize:15]; textView.frame=(CGRect){10,80,CGRectGetWidth(self.view.fra