Android DataBinding在哪里可以得到上下文？ [英] Android DataBinding where to get context?

问题描述

我有TextView显示时间。我想使用Android的DataBinding插件。
对于格式化时间，我使用的是DateUtils.formatDateTime（context，int，int）方法，它使用Context实例。是否可以获取上下文包含元素？或者我必须使用旧的学校方式吗？

谢谢

解决方案

  @BindingAdapter（{timeMillis，dateFlags}）
 public static void setDateText（TextView view，int timeMillis，int dateFlags）{
 view.setText（DateUtils.formatDateTime（view.getContext（），timeMillis，
 dateFlags））; 
} 
  

然后在您的TextView中使用它：

 < TextView ... app：timeMillis =@ {timeVar}app：dateFlags =@ {dateFlags}/> 
  

I have TextView for showing time. I want to use Android's DataBinding plugin. For formatting time I am using DateUtils.formatDateTime(context, int, int) method which takes Context instance. Is it possible to get context include element? Or do I have to use old school way?

Thanks

解决方案

Thought I should answer instead of putting in a comment. You'll have more options when rc2 is released. In rc1, you can pass the context in a variable to the Binding, then pass it as a parameter to the method. Alternatively, you can create a custom attribute for data binding:

@BindingAdapter({"timeMillis", "dateFlags"})
public static void setDateText(TextView view, int timeMillis, int dateFlags) {
    view.setText(DateUtils.formatDateTime(view.getContext(), timeMillis,
                 dateFlags));
}

And then use it in your TextView:

<TextView ... app:timeMillis="@{timeVar}" app:dateFlags="@{dateFlags}"/>

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