工具栏中的菜单问题

Question

我的应用程序中有很多片段，每个片段在工具栏中都有一个菜单和图标按钮。

之后，我使用操作栏并且图标工作，但是当我用工具栏替换操作栏时，菜单不起作用。

我的工具栏由：一个菜单和一个按钮组成。

该 xml 代码：

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.Toolbar
android:id="@+id/my_toolbar_home"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:elevation="4dp"
android:theme="@style/AppTheme.NoTitle"
app:popupTheme="@style/AppTheme">
<ImageButton
android:id="@+id/toolbar_button"
android:src="@drawable/login"
android:layout_width="30dp"
android:layout_height="40dp"
style="@style/Widget.AppCompat.Button.Borderless"
android:layout_alignParentEnd="true"/>
<TextView
android:id="@+id/toolbar_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Maintenance"
android:textColor="@color/WHITE" />
</android.support.v7.widget.Toolbar>
</RelativeLayout>

请帮助我，我没有找到错误。

我附上代码：

class FragmentDiagnosticsTableViewController : Fragment(), SwipeRefreshLayout.OnRefreshListener {
lateinit var mSwipeRefreshLayout: SwipeRefreshLayout
lateinit var elementList: ListView
lateinit var elementListAdapter: FragmentDiagnosticsTableViewController.ElementAdapter
lateinit var toolbarTopDiagnostic : Toolbar

companion object {
fun newInstance(): Fragment {
var fb: FragmentDiagnosticsTableViewController = FragmentDiagnosticsTableViewController()
return fb
}
}
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
val rootView = inflater.inflate(R.layout.fragment_diagnostic, container,
false)
var builder = StrictMode.VmPolicy.Builder()
StrictMode.setVmPolicy(builder.build())
mContext = activity as MaintenanceTableViewController
mSwipeRefreshLayout = rootView.findViewById<SwipeRefreshLayout>(R.id.swipeRefresh)
mSwipeRefreshLayout.setOnRefreshListener(this)
elementList = rootView.findViewById<ListView>(R.id.elementList)
toolbarTopDiagnostic = rootView.findViewById(R.id.my_toolbar_diagnostic) as Toolbar
toolbarTopDiagnostic.inflateMenu(R.menu.men_search)
val activity = activity as AppCompatActivity?
if (activity != null) {
activity.setSupportActionBar(toolbarTopDiagnostic)
activity.setTitle("")

}

var title = rootView.findViewById<TextView>(R.id.toolbar_title)
title.setText("Diagnostic")

val btn_diagnostic= toolbarTopDiagnostic.findViewById(R.id.toolbar_button_diagnostic) as ImageButton

//(activity as AppCompatActivity).supportActionBar?.title = "Diagnostics"
setHasOptionsMenu(true)
DiagnosticsTableViewController().loadFileCsv(mContext)
elementListAdapter = ElementAdapter(context!!, totalDiagnosticEntries)
elementList.adapter = elementListAdapter
return rootView
}
override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
inflater.inflate(R.menu.men_search, menu)
val searchItem = menu.findItem(R.id.action_search)
val searchView = searchItem.actionView as SearchView
searchView.setQueryHint("Search View Hint")
searchView.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
override fun onQueryTextSubmit(query: String): Boolean {
//Task HERE
return false
}
override fun onQueryTextChange(newText: String): Boolean {

if (TextUtils.isEmpty(newText)) {
elementListAdapter.filter("")
elementList.clearTextFilter()
} else {
elementListAdapter.filter(newText)
}
return false
}
})
return super.onCreateOptionsMenu(menu, inflater)
}
override fun onOptionsItemSelected(item: MenuItem): Boolean {
try {
if (item.itemId == R.id.shareButton) {
var intentShareFile = Intent(Intent.ACTION_SEND)
val fileWithinMyDir = filePathMessageLogger
try {
if (fileWithinMyDir != null) {
if (fileWithinMyDir.exists()) {
intentShareFile.setType("text/plain")
val fileURI = FileProvider.getUriForFile(activity!!, "com.example.saradalmonte.pocketserviceandroid", fileWithinMyDir!!)
intentShareFile.putExtra(Intent.EXTRA_STREAM, fileURI)
intentShareFile.putExtra(Intent.EXTRA_TEXT, "File Csv")
startActivity(Intent.createChooser(intentShareFile, "Share file"))
onStop()
return true
} else {
Toast.makeText(activity, "Error File not Exist", Toast.LENGTH_SHORT).show()
}
}
} catch (e: Exception) {
Toast.makeText(activity, "Error File not Exist", Toast.LENGTH_SHORT).show()
}
}
else if (item.itemId == R.id.delete) {
val fileWithinMyDir = filePathMessageLogger
if (fileWithinMyDir != null) {
if (fileWithinMyDir.exists()) {
fileWithinMyDir.delete()
totalDiagnosticEntries.clear()
elementListAdapter = ElementAdapter(context!!,totalDiagnosticEntries )
elementList.adapter = elementListAdapter
}
}
}
else if(item.itemId == R.id.toolbar_button_diagnostic){

var intent = Intent(activity, LoginIn::class.java)
startActivity(intent)
onDestroy()
}
} catch (e: Exception) {
Toast.makeText(activity, "Error File not present", Toast.LENGTH_SHORT).show()
}
return true
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
if (view != null) {
super.onViewCreated(view, savedInstanceState)
elementListAdapter = ElementAdapter(context!!, totalDiagnosticEntries)
elementList.adapter = elementListAdapter

}
}

Answer 1

你必须在activity中设置supportActionBar

在activityonCreate()中添加以下内容：

setSupportActionBar(my_toolbar_home)
supportActionBar?.setDisplayShowTitleEnabled(false)