3

以供参考

这是一个显示问题的分支(注意项目不完整)。运行它,你会看到编译时错误Unresolved reference: search_src_text

https://github.com/mitchtabian/Clean-Notes/blob/searchview-issue/notes/src/main/java/com/codingwithmitch/cleannotes/notes/framework/presentation/notelist/NoteListFragment.kt

我正在尝试做的事情:

我想从 SearchView 向我的 ViewModel 提交文本。提交文本后,我使用该文本执行查询。

你可能在想什么:

“就用一个OnQueryTextListener。”

如果OnQueryTextListener文本为空/空,则不会提交文本。我正在使用 null/empty case 来搜索数据库中的所有内容。所以这行不通。

我尝试的解决方法:

过去,我SearchAutoComplete在 SearchView 中手动搜索了视图的 ID。你可以像这样找到它:

val searchPlate: SearchView.SearchAutoComplete? = search_view.findViewById(R.id.search_src_text)

然后你只需附加一个OnEditorActionListener并监听 IME 操作,你就可以开始了:

searchPlate.setOnEditorActionListener { v, actionId, event ->
    if (actionId == EditorInfo.IME_ACTION_UNSPECIFIED
        || actionId == EditorInfo.IME_ACTION_SEARCH ) {
        val searchQuery = v.text.toString()
        viewModel.setQuery(searchQuery)
        viewmodel.executeSearch()
    }
    true
}

通常这工作正常。唯一的区别(我可以看到)是这次我使用的是Dynamic Feature Module。尝试访问R.id.search_src_text它时会引发此编译时错误:

Unresolved reference: search_src_text

的,布局位于动态功能模块 /res/ 目录中。

编码

1、布局中的SearchView

<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/app_background_color"
    >

   <androidx.appcompat.widget.SearchView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:iconifiedByDefault="false"
        android:queryHint="@string/text_Search"
        android:layout_centerHorizontal="true" />

</androidx.constraintlayout.widget.ConstraintLayout>

2.获取search_src_text的引用

val searchPlate: SearchView.SearchAutoComplete? = search_view.findViewById(R.id.search_src_text)

运行项目将产生错误Unresolved reference: search_src_text

另一个奇怪的事情:

我遍历视图层次结构,直到找到 SearchAutoComplete,然后附加侦听器,它工作得很好......

for((index1, child) in search_view.children.withIndex()){
    printLogD("ListFragment", "${index1}, ${child}")
    for((index2, child2) in (child as ViewGroup).children.withIndex()){
        printLogD("ListFragment", "T2: ${index2}, ${child2}")
        if(child2 is ViewGroup){
            for((index3, child3) in (child2 as ViewGroup).children.withIndex()){
                printLogD("ListFragment", "T3: ${index3}, ${child3}")
                if(child3 is ViewGroup){
                    for((index4, child4) in (child3 as ViewGroup).children.withIndex()){
                        printLogD("ListFragment", "T4: ${index4}, ${child4}")
                        if(child4 is SearchView.SearchAutoComplete){
                            child4.setOnEditorActionListener { v, actionId, event ->
                                if (actionId == EditorInfo.IME_ACTION_UNSPECIFIED
                                    || actionId == EditorInfo.IME_ACTION_SEARCH ) {
                                    val searchQuery = v.text.toString()
                                    printLogD("NoteList", "SearchView: (keyboard or arrow) executing search...: ${searchQuery}")
                                    viewModel.setQuery(searchQuery).let{
                                        viewModel.loadFirstPage()
                                    }
                                }
                                true
                            }
                            break
                        }
                    }
                }
            }
        }
    }
}

任何见解将不胜感激。

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1 回答 1

3
val searchPlate: SearchView.SearchAutoComplete? = search_view.findViewById(androidx.appcompat.R.id.search_src_text)
于 2020-04-15T02:35:01.133 回答