单击导航项目时无法切换片段？

Question

单击导航项时，我无法切换片段。我没有使用菜单项填充导航抽屉。

activity_dashboard layout

 <?xml version="1.0" encoding="utf-8"?>
    <android.support.v4.widget.DrawerLayout 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/drawer_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true"
        tools:openDrawer="start">

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

            <!-- The ActionBar displayed at the top -->
            <include
                layout="@layout/app_bar_dashboard"
                android:layout_width="match_parent"
                android:layout_height="wrap_content" />

            <!-- The main content view where fragments are loaded -->
            <FrameLayout
                android:id="@+id/container"
                android:layout_width="match_parent"
                android:layout_height="match_parent" />
        </LinearLayout>

        <android.support.design.widget.NavigationView
            android:id="@+id/nav_view"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            android:background="#23282e"
            android:fitsSystemWindows="true"
            android:visibility="gone"
            >

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

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="@dimen/nav_header_height"
                    android:background="@mipmap/login"
                    android:orientation="vertical">

                    <de.hdodenhof.circleimageview.CircleImageView
                        android:id="@+id/avatar"
                        android:layout_width="50dp"
                        android:layout_height="50dp"
                        android:layout_gravity="center_horizontal"
                        android:layout_marginTop="50dp"
                        android:src="@mipmap/nav_user_pic" />

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center_horizontal"
                        android:text="Sunil Nepali"
                        android:textColor="#fff"
                        android:textSize="16dp" />

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center_horizontal"
                        android:text="Student"
                        android:textColor="#fff"
                        android:textSize="10dp"
                        android:textStyle="italic" />


                </LinearLayout>

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

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:background="#008b8b"
                        android:paddingBottom="11dp"
                        android:paddingLeft="20dp"
                        android:paddingTop="11dp"
                        android:text="INSTITUTION"
                        android:textColor="#fff" />

                    <LinearLayout
                        android:id="@+id/dashboard_layout"
                        android:layout_width="match_parent"
                        android:layout_height="35dp"
                        android:background="#2e353d"
                        android:orientation="horizontal">

                        <ImageView
                            android:layout_width="30dp"
                            android:layout_height="match_parent"
                            android:layout_marginLeft="30dp"
                            android:padding="3dp"
                            android:src="@mipmap/dashboard" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center_vertical"
                            android:layout_marginLeft="8dp"
                            android:text="Dashboard"
                            android:textColor="#fff" />

                    </LinearLayout>

                    <View
                        android:layout_width="match_parent"
                        android:layout_height="1dp"
                        android:background="#23282e" />

                    <LinearLayout
                        android:id="@+id/calender_layout"
                        android:layout_width="match_parent"
                        android:layout_height="35dp"
                        android:background="#2e353d"
                        android:orientation="horizontal">

                        <ImageView
                            android:layout_width="30dp"
                            android:layout_height="match_parent"
                            android:layout_marginLeft="30dp"
                            android:padding="3dp"
                            android:src="@mipmap/calander" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center_vertical"
                            android:layout_marginLeft="8dp"
                            android:text="Calendar"
                            android:textColor="#fff" />

                    </LinearLayout>

                    <View
                        android:layout_width="match_parent"
                        android:layout_height="1dp"
                        android:background="#23282e" />

                    <LinearLayout
                        android:id="@+id/view_fee"
                        android:layout_width="match_parent"
                        android:layout_height="35dp"
                        android:background="#2e353d"
                        android:orientation="horizontal">

                        <ImageView
                            android:layout_width="30dp"
                            android:layout_height="match_parent"
                            android:layout_marginLeft="30dp"
                            android:padding="3dp"
                            android:src="@mipmap/fee" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center_vertical"
                            android:layout_marginLeft="8dp"
                            android:text="Fee"
                            android:textColor="#fff" />

                    </LinearLayout>

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:background="#008b8b"
                        android:paddingBottom="11dp"
                        android:paddingLeft="20dp"
                        android:paddingTop="11dp"
                        android:text="ACADEMICS"
                        android:textColor="#fff" />

                    <LinearLayout
                        android:id="@+id/class_schedule"
                        android:layout_width="match_parent"
                        android:layout_height="35dp"
                        android:background="#2e353d"
                        android:orientation="horizontal">

                        <ImageView
                            android:layout_width="30dp"
                            android:layout_height="match_parent"
                            android:layout_marginLeft="30dp"
                            android:padding="3dp"
                            android:src="@mipmap/class_schedule" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center_vertical"
                            android:layout_marginLeft="8dp"
                            android:text="Class Schedule"
                            android:textColor="#fff" />

                    </LinearLayout>

                    <View
                        android:layout_width="match_parent"
                        android:layout_height="1dp"
                        android:background="#23282e" />

                    <LinearLayout
                        android:id="@+id/progress_report"
                        android:layout_width="match_parent"
                        android:layout_height="35dp"
                        android:background="#2e353d"
                        android:orientation="horizontal">

                        <ImageView
                            android:layout_width="30dp"
                            android:layout_height="match_parent"
                            android:layout_marginLeft="30dp"
                            android:padding="3dp"
                            android:src="@mipmap/progess_report" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center_vertical"
                            android:layout_marginLeft="8dp"
                            android:text="Progress Report"
                            android:textColor="#fff" />

                    </LinearLayout>

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:background="#008b8b"
                        android:paddingBottom="11dp"
                        android:paddingLeft="20dp"
                        android:paddingTop="11dp"
                        android:text="ACCOUNT"
                        android:textColor="#fff" />

                    <LinearLayout
                        android:id="@+id/view_profile"
                        android:layout_width="match_parent"
                        android:layout_height="35dp"
                        android:background="#2e353d"
                        android:orientation="horizontal">

                        <ImageView
                            android:layout_width="30dp"
                            android:layout_height="match_parent"
                            android:layout_marginLeft="30dp"
                            android:padding="3dp"
                            android:src="@mipmap/view_profile" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center_vertical"
                            android:layout_marginLeft="8dp"
                            android:text="View Profile"
                            android:textColor="#fff" />

                    </LinearLayout>

                    <View
                        android:layout_width="match_parent"
                        android:layout_height="1dp"
                        android:background="#23282e" />

                    <LinearLayout
                        android:layout_width="match_parent"
                        android:layout_height="35dp"
                        android:background="#2e353d"
                        android:orientation="horizontal">

                        <ImageView
                            android:layout_width="30dp"
                            android:layout_height="match_parent"
                            android:layout_marginLeft="30dp"
                            android:padding="3dp"
                            android:src="@mipmap/settings" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center_vertical"
                            android:layout_marginLeft="8dp"
                            android:text="Settings"
                            android:textColor="#fff" />

                    </LinearLayout>

                    <View
                        android:layout_width="match_parent"
                        android:layout_height="1dp"
                        android:background="#23282e" />

                    <LinearLayout
                        android:layout_width="match_parent"
                        android:layout_height="35dp"
                        android:background="#2e353d"
                        android:orientation="horizontal">

                        <ImageView
                            android:layout_width="30dp"
                            android:layout_height="match_parent"
                            android:layout_marginLeft="30dp"
                            android:padding="3dp"
                            android:src="@mipmap/logout" />

                        <TextView
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center_vertical"
                            android:layout_marginLeft="8dp"
                            android:text="Log Out"
                            android:textColor="#fff" />

                    </LinearLayout>

                </LinearLayout>
            </LinearLayout>

        </android.support.design.widget.NavigationView>


    </android.support.v4.widget.DrawerLayout>

家庭课程

public class Home extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {

        LinearLayout dashboard, calendar, classSchedule, progressReport, profile, fee;
        FragmentManager fragmentManager;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_dashboard);
            Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
            setSupportActionBar(toolbar);

            calendar = (LinearLayout) findViewById(R.id.calender_layout);
            classSchedule = (LinearLayout) findViewById(R.id.class_schedule);
            profile = (LinearLayout) findViewById(R.id.view_profile);
            fee = (LinearLayout) findViewById(R.id.view_fee);
            progressReport = (LinearLayout) findViewById(R.id.progress_report);
            //    calendar.setOnClickListener(this);
            //    classSchedule.setOnClickListener(this);
            //    profile.setOnClickListener(this);
            //   fee.setOnClickListener(this);
            //   progressReport.setOnClickListener(this);

            DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
            ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                    this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
            drawer.setDrawerListener(toggle);
            toggle.syncState();

            NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
            navigationView.setNavigationItemSelectedListener(this);
            navigationView.setVisibility(View.VISIBLE);
        }

        @Override
        public void onBackPressed() {
            DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
            if (drawer.isDrawerOpen(GravityCompat.START)) {
                drawer.closeDrawer(GravityCompat.START);
            } else {
                super.onBackPressed();
            }
        }


        @Override
        public boolean onNavigationItemSelected(MenuItem item) {

            int id = item.getItemId();
            fragmentManager = getSupportFragmentManager();

            fragmentManager.beginTransaction()
                    .add(R.id.container, new Dashboard())
                    .commit();


            if (id == R.id.dashboard_layout) {
                fragmentManager.beginTransaction()
                        .replace(R.id.container, new Dashboard())
                        .commit();
            } else if (id == R.id.view_fee) {
                fragmentManager.beginTransaction()
                        .replace(R.id.container, new Fee())
                        .commit();

            }

            DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
            drawer.closeDrawer(GravityCompat.START);
            return true;
        }


    }

我的信息中心片段

public class Dashboard extends Fragment {


        public Dashboard() {
            // Required empty public constructor
        }


        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            // Inflate the layout for this fragment
            return inflater.inflate(R.layout.fragment_dashboard, container, false);
        }


    }

如何解决这个问题？

Answer 1

如果您没有使用菜单项，则需要直接定义textview或Layour，无论您在菜单抽屉中定义了什么，然后单击该特定项目，如下所示。

这是您的一个线性布局ID是view_fee。 处理该特定视图的单击事件并打开片段

var ModalController = function($scope) { ... }

Answer 2

你需要使用文本视图点击而不是使用menuItems你没有在menu.xml中添加任何菜单项它不会真正起作用你需要尝试这样，

public class Home extends AppCompatActivity implements View.OnClickListener {

    LinearLayout calendar, classSchedule, progressReport, profile, fee;
    android.support.v4.app.FragmentManager fragmentManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_dashboard);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        //  setSupportActionBar(toolbar);
        calendar = (LinearLayout) findViewById(R.id.calender_layout);
        classSchedule = (LinearLayout) findViewById(R.id.class_schedule);
        profile = (LinearLayout) findViewById(R.id.view_profile);
        fee = (LinearLayout) findViewById(R.id.view_fee);
        progressReport = (LinearLayout) findViewById(R.id.progress_report);
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.accept, R.string.appbar_scrolling_view_behavior);
        drawer.setDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setVisibility(View.VISIBLE);
        TextView textView1 = (TextView) findViewById(R.id.cal);
        textView1.setOnClickListener(this);
    }

    @Override
    public void onBackPressed() {
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }


    @Override
    public void onClick(View view) {
        int id = view.getId();

        if (id == R.id.cal) {
            fragmentManager = getSupportFragmentManager();
            FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
            fragmentTransaction.replace(R.id.container, new Dashboard())
                    .commit();

        }

    }

}

您需要为要点击的所有textview设置ID

                      <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center_vertical"
                        android:layout_marginLeft="8dp"
                        android:text="Calendar"
                        android:id="@+id/cal"
                        android:textColor="#fff" />