该方法的预期目的是什么 findBinding(View view) ？
我一直在使用数据绑定(bind)库测试版。
目前还没有针对各个类的官方引用文档，所以我一直在查看源代码以了解我们可以访问哪些方法。
DataBindingUtil 类有两个方法，听起来它们会做类似的事情:
-
public static <T extends ViewDataBinding> T findBinding(View view) -
public static <T extends ViewDataBinding> T getBinding(View view)
第二种方法getBinding只是一个调用 ViewDataBinding 的实用方法类' getBinding方法。
第一种方法findBinding更不清楚的是要遵循和确定其目的。有什么想法吗？
最佳答案
抱歉，网页中缺少文档，但它们应该在 sdk maven 存储库中。
不同之处在于，如果给定 View 不是绑定(bind)根，则 find 绑定(bind)将遍历父级，而 getBinding 将返回 null。以下是文档:
/**
* Retrieves the binding responsible for the given View. If <code>view</code> is not a
* binding layout root, its parents will be searched for the binding. If there is no binding,
* <code>null</code> will be returned.
* <p>
* This differs from {@link #getBinding(View)} in that findBinding takes any view in the
* layout and searches for the binding associated with the root. <code>getBinding</code>
* takes only the root view.
*
* @param view A <code>View</code> in the bound layout.
* @return The ViewDataBinding associated with the given view or <code>null</code> if
* view is not part of a bound layout.
*/
public static <T extends ViewDataBinding> T findBinding(View view) {
/**
* Retrieves the binding responsible for the given View layout root. If there is no binding,
* <code>null</code> will be returned. This uses the DataBindingComponent set in
* {@link #setDefaultComponent(DataBindingComponent)}.
*
* @param view The root <code>View</code> in the layout with binding.
* @return The ViewDataBinding associated with the given view or <code>null</code> if
* either the view is not a root View for a layout or view hasn't been bound.
*/
public static <T extends ViewDataBinding> T getBinding(View view) {
关于android - DataBindingUtil findBinding(查看 View )与 getBinding(查看 View )，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31579777/