如何在数据绑定的同时在android XML中编写三元运算条件

Question

如何在使用数据绑定时在android xml中编写Ternary操作的等效表达式。

android:visibility="@{(assessmentquestionanswer.type.equals(@string/editText_type)?  View.VISIBLE : View.GONE) || (assessmentquestionanswer.type.equals(@string/date)?  View.VISIBLE : View.GONE)}"

目前我收到一条错误消息，因为必须能够找到boolean和int的公共父级

Answer 1

你的实施方式是错误的，你现在的状况是这样的

(assessmentquestionanswer.type.equals(@string/editText_type)?  View.VISIBLE : View.GONE) || (assessmentquestionanswer.type.equals(@string/date)?  View.VISIBLE : View.GONE)
                          View.VISIBLE                                                   ||                            View.VISIBLE

这是不对的。 它应该是

android:visibility="@{(assessmentquestionanswer.type.equals(@string/editText_type) || assessmentquestionanswer.type.equals(@string/date)) ?  View.VISIBLE : View.GONE}"

Answer 2

试试这样：

android:visibility="@{(assessmentquestionanswer.type.equals(@string/editText_type) || assessmentquestionanswer.type.equals(@string/date))?  View.VISIBLE : View.GONE}"