android - 如何使用数据绑定(bind)从 xml 调用 Edittext onEditorAction

Question

如下面的代码

<data>
    <variable
      name="listener"
      type="android.view.View.OnClickListener" />
</data>


<TextView android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android: text="@ {user.firstName}"
     android:onClick="@{listener::onClick}"/>

我想从XML调用editorAction，可以通过xml来执行它吗？

Answer 1

1.创建接口(interface)

interface CustomOnEditorActionListener {
    fun onEditorAction()
}

2.BindingAdapter

@BindingAdapter("app:customOnEditorActionListener")
fun setCustomOnEditorActionListener(view: TextView, listener: CustomOnEditorActionListener?) {
    if (listener == null) {
        view.setOnEditorActionListener(null)
    } else {
        view.setOnEditorActionListener(object : TextView.OnEditorActionListener {
            override fun onEditorAction(v: TextView?, actionId: Int, event: KeyEvent?): Boolean {
                listener.onEditorAction()
                return false
            }
        })
    }
}

3.XML 格式。 viewModel实现接口(interface)CustomOnEditorActionListener

    ...
<variable
name="viewModel"
type="nl.login.LoginViewModel" />

    ...
<EditText
android:id="@+id/password_edit"
app:customOnEditorActionListener="@{viewModel}"
    ...