searchView menuItem 出现在可折叠菜单中然后消失

Question

我现在的情况是这样的：

我的 SearchView 出现在菜单上。

通常折叠菜单没有搜索菜单。

当我按下搜索菜单并打开折叠菜单时，折叠菜单中有搜索。为什么会这样？

另外，发生这种情况后，如果折叠菜单关闭并且用户退出搜索，搜索图标就会消失。我该如何解决这个问题？

我的 onCreateOptionsMenu：

        val inflater: MenuInflater = menuInflater
        inflater.inflate(R.menu.menu, menu)

        val trendingBtn = menu?.findItem(R.id.trending)
        trendingBtn?.setOnMenuItemClickListener {
            viewModel.trending()
            true
        }


        val searchItem = menu?.findItem(R.id.search)
        val searchView = searchItem?.actionView as SearchView

        searchItem.setOnActionExpandListener(object : MenuItem.OnActionExpandListener {
            override fun onMenuItemActionExpand(item: MenuItem?): Boolean {
                Toast.makeText(this@MainActivity, "Search is Expanded", Toast.LENGTH_SHORT).show()
                return true
            }

            override fun onMenuItemActionCollapse(item: MenuItem?): Boolean {
                Toast.makeText(this@MainActivity, "Search is Collapsed", Toast.LENGTH_SHORT).show()
                return true
            }
        })

        searchView.queryHint = "Search"
        searchView.setOnQueryTextListener(object : OnQueryTextListener {
            override fun onQueryTextChange(s: String): Boolean {
                return false
            }

            override fun onQueryTextSubmit(s: String?): Boolean {
                val searchString = "Searching " + s
                Toast.makeText(this@MainActivity, searchString, Toast.LENGTH_SHORT).show()

                loadSearchVideoList(s)

                val intent = Intent(applicationContext, MainActivity::class.java)
                intent.putExtra(SearchManager.QUERY, s)
                intent.putExtra(
                    "CUSTOM_MESSAGE",
                    "you can also add custom message when submitting the search action"
                )
                intent.action = Intent.ACTION_SEARCH
                startActivity(intent)
                return false
            }
        })

        return super.onCreateOptionsMenu(menu)
    }

我的menu.xml:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <item
        android:title="@string/search"
        android:icon="@drawable/ic_search"
        android:id="@+id/search"
        app:showAsAction="ifRoom|collapseActionView"
        app:actionViewClass="androidx.appcompat.widget.SearchView"/>
    <item
        android:title="@string/trending"
        android:icon="@drawable/ic_baseline_trending_up_24"
        android:id="@+id/trending"/>


</menu>

Answer 1

看看invalidateOptionsManu()方法，我想这就是你要找的。

您应该在展开搜索后调用此方法，以便它可以“重新创建”菜单。

来自文档：

Declare that the options menu has changed, so should be recreated. The onCreateOptionsMenu(android.view.Menu) method will be called the next time it needs to be displayed.

searchView menuItem 出现在可折叠菜单中然后消失

searchView menuItem appears in the collapsible menu then disappears

xml

android

android-layout

kotlin

android-studio