抽屉菜单在 Click 事件上没有做任何事情

Question

我在我的应用程序中实现了导航抽屉，但它的菜单在点击时不起作用。我不知道出了什么问题，但是点击事件没有做任何事情，也没有烘烤 message.Click 抽屉菜单中的任何东西都没有做 anything.Firstly 其他按钮也没有工作，但是将它们添加到单独的布局中解决了 issue.but抽屉菜单仍然无法使用

这是我的 xml :

<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true">

        <com.google.android.material.navigation.NavigationView
            android:id="@+id/navigation_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            app:menu="@menu/drawer_menu" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <include layout="@layout/app_bar_main" />

    </LinearLayout>
</androidx.drawerlayout.widget.DrawerLayout>

在 java 我正在使用它 :

public class AuthorMainScreen extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
    DrawerLayout drawerLayout;
    NavigationView navigationView;
    private ActionBarDrawerToggle actionBarDrawerToggle;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_author_navigation);

        viewDeclaration();
        drawerLayout.addDrawerListener(actionBarDrawerToggle);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {

        if (actionBarDrawerToggle.onOptionsItemSelected(item))
            return true;

        return super.onOptionsItemSelected(item);
    }


    private void viewDeclaration() {
        newSurveyBtn = findViewById(R.id.new_surveys_button);
        surveyWithRef = findViewById(R.id.get_survey_button);
        surveyResult = findViewById(R.id.analyze_survey);
        drawerLayout = findViewById(R.id.drawer_layout);
        navigationView = findViewById(R.id.navigation_view);

    }

    @Override
    public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
        switch (menuItem.getItemId()) {
            case R.id.menu_share:
                System.out.println("ss" + "coming");
                Toast.makeText(getApplicationContext(), "Share", Toast.LENGTH_SHORT).show();
                break;
            case R.id.menu_survey_count:
                Toast.makeText(getApplicationContext(), "Surveys", Toast.LENGTH_SHORT).show();
                break;
            case R.id.menu_logout:
                Toast.makeText(getApplicationContext(), "logout", Toast.LENGTH_SHORT).show();
                break;

        }
        return true;
    }

Answer 1

您没有初始化 actionBarDrawerToggle。你必须这样做。

Answer 2

此问题的解决方案在 XML 文件中，将导航视图置于 include 标记下方，它会起作用

改变这个

 <com.google.android.material.navigation.NavigationView
        android:id="@+id/navigation_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        app:menu="@menu/drawer_menu" />

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <include layout="@layout/app_bar_main" />

</LinearLayout>

对此

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">
        <include layout="@layout/app_bar_main" />
    </LinearLayout>

<com.google.android.material.navigation.NavigationView
            android:id="@+id/navigation_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            app:menu="@menu/drawer_menu" />

Answer 3

当你在使用AndroidX的时候尽量使用相关的方法。

当你想在那个特定的片段中实现片段时添加宿主片段activity:

xml:

<androidx.drawerlayout.widget.DrawerLayout 
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">


       <fragment
        android:id="@+id/host_fragment"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:defaultNavHost="true"
        app:navGraph="@navigation/navigation_graph"
        tools:layout_editor_absoluteX="0dp"
        tools:layout_editor_absoluteY="0dp" />



<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <include layout="@layout/app_bar_main" />

</LinearLayout>

  <com.google.android.material.navigation.NavigationView
        android:id="@+id/navigation_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        app:menu="@menu/drawer_menu" />

现在使用导航图，您需要在其中实现您将要在 activity 中使用的片段：

navigation_graph.xml:

<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/navigation_graph"
app:startDestination="@id/profile">
  <fragment
    android:id="@+id/profile"
    android:name="com.example.jetpacknavigationexample.Fragments.ProfileFragment"
    android:label="@string/profile"
    tools:layout="@layout/fragment_profile" />
  <fragment
    android:id="@+id/features"
    android:name="com.example.jetpacknavigationexample.Fragments.FeaturesFragment"
    android:label="@string/features"
    tools:layout="@layout/fragment_features" />
  <fragment
    android:id="@+id/signout"
    android:name="com.example.jetpacknavigationexample.Fragments.ProfileFragment"
    android:label="@string/signout"
    tools:layout="@layout/fragment_signout" />
  </navigation>

在您的 java class 添加实现导航组件代码：

public class AuthorMainScreen extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
DrawerLayout drawerLayout;
NavigationView navigationView;
private ActionBarDrawerToggle actionBarDrawerToggle;

//Add this
 NavController mNavController;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_author_navigation);

   //add this
    mNavController = Navigation.findNavController(this,R.id.host_fragment);







 NavigationUI.setupActionBarWithNavController(this, mNavController, drawerLayout);

    NavigationUI.setupWithNavController(navigationView,mNavController);

    mNavigationView.setNavigationItemSelectedListener(this);

    viewDeclaration();
    drawerLayout.addDrawerListener(actionBarDrawerToggle);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {

    if (actionBarDrawerToggle.onOptionsItemSelected(item))
        return true;

    return super.onOptionsItemSelected(item);
}


private void viewDeclaration() {
    newSurveyBtn = findViewById(R.id.new_surveys_button);
    surveyWithRef = findViewById(R.id.get_survey_button);
    surveyResult = findViewById(R.id.analyze_survey);
    drawerLayout = findViewById(R.id.drawer_layout);
    navigationView = findViewById(R.id.navigation_view);

}

@Override
public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
    switch (menuItem.getItemId()) {
        case R.id.menu_share:
            System.out.println("ss" + "coming");
            Toast.makeText(getApplicationContext(), "Share", 
         Toast.LENGTH_SHORT).show();
            break;
        case R.id.menu_survey_count:
            Toast.makeText(getApplicationContext(), "Surveys", 
              Toast.LENGTH_SHORT).show();
            break;
        case R.id.menu_logout:
            Toast.makeText(getApplicationContext(), "logout", 
                 Toast.LENGTH_SHORT).show();
            break;

    }
    return true;
}

您现在可以测试您的应用程序了。实施后告诉我。

抽屉菜单在 Click 事件上没有做任何事情

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