SpannableString不是字符串直接。所以，你可以不投。但是，它可以被转换成字符串。你可以转换的东西字符串与空字符串串联。

SpannableString is not String directly. so, you can not cast. but, it can be converted to string. you can convert something to string with concatenating with empty string.

pasteData = "" + item.getText();