这是我要实现的:当人们点击工具栏右上角的菜单时，屏幕底部会出现一个选项菜单。见下图:

我不确定我应该为底部的项目调用什么方法。有人可以给我一些关于如何实现这个的提示吗？

我使用下面的代码成功实现了右上角菜单栏中的图标。但是我不知道如何显示屏幕底部的选项，宽度为match_parent，高度为wrap_content

点击右上角

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.edit_profile_image_menu, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();

        switch (id) {
            case R.id.more:
                //How to show the 2 option in the bottom of screen here


                return true;
        }

        return super.onOptionsItemSelected(item);
    }

更新

执行Nikesh的代码后，弹窗如下:

最佳答案

更新的答案

您现在可以使用 Material Design BottomAppBar

• 底部应用栏在移动屏幕底部显示导航和关键操作

示例代码

在您的 build.gradle

implementation 'com.google.android.material:material:1.0.0'

现在在 res/menu 目录下创建 3 个菜单文件

bottom_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"
    xmlns:tools="http://schemas.android.com/tools">

    <item
        android:id="@+id/app_bar_search"
        android:icon="@drawable/ic_search"
        android:title="Search"
        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/app_bar_fav"
        android:icon="@drawable/ic_favorite"
        android:title="Favorite"
        app:showAsAction="ifRoom"/>
    <item
        android:icon="@drawable/ic_favorite"
        android:title="Favorite"
        app:showAsAction=""/>
</menu>

nav_drawer_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:id="@+id/navItemOne"
        android:title="Nav Item 1"
        app:showAsAction="never"/>

    <item
        android:id="@+id/navItemTwo"
        android:title="Nav Item 2"
        app:showAsAction="never"/>

    <item
        android:id="@+id/navItemThree"
        android:title="Nav Item 3"
        app:showAsAction="never"/>
</menu>

toolbar_menu.xml

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

    <item
        android:id="@+id/app_bar_fav"
        android:icon="@drawable/ic_favorite"
        android:title="Favorite"
        app:showAsAction="ifRoom"/>
    <item
        android:id="@+id/app_bar_search"
        android:icon="@drawable/ic_search"
        android:title="Search"
        app:showAsAction="ifRoom"/>
    <item
        android:id="@+id/app_bar_settings"
        android:title="Settings"
        app:showAsAction="never"/>

    <item
        android:title="Menu Item 1"
        app:showAsAction="never"/>

    <item
        android:title="Menu Item 2"
        app:showAsAction="never"/>
    <item
        android:title="Menu Item 3"
        app:showAsAction="never"/>

</menu>

Now Create a class name BottomNavigationDrawerFragment to open navigation drawer from bottom

import android.content.Context
import android.os.Bundle
import android.view.Gravity
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Toast
import com.google.android.material.bottomsheet.BottomSheetDialogFragment
import kotlinx.android.synthetic.main.bottom_nav_layout.*

class BottomNavigationDrawerFragment : BottomSheetDialogFragment() {

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        return inflater.inflate(R.layout.bottom_nav_layout, container, false)
    }
    override fun onActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceState)

        navigation_view.setNavigationItemSelectedListener { menuItem ->
            // Bottom Navigation Drawer menu item clicks
            when (menuItem!!.itemId) {
                R.id.navItemOne -> context!!.toast(" Nav item one is Clicked ")
                R.id.navItemTwo -> context!!.toast(" Nav item Two is Clicked ")
                R.id.navItemThree -> context!!.toast(" Nav item Three is Clicked ")
            }
            // Add code here to update the UI based on the item selected
            // For example, swap UI fragments here
            true
        }
    }

    // This is an extension method for easy Toast call
    fun Context.toast(message: CharSequence) {
        val toast = Toast.makeText(this, message, Toast.LENGTH_SHORT)
        toast.setGravity(Gravity.BOTTOM, 0, 600)
        toast.show()
    }
}

Code of MainActivity

import android.os.Bundle
import android.view.Menu
import android.view.MenuItem
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        //  attach menu to your BottomAppBar
        bottomBar.replaceMenu(R.menu.bottom_menu)

        // handle click event of navigationIcon
        bottomBar.setNavigationOnClickListener {
            toast("Navigation Icon Clicked")
            val bottomNavDrawerFragment = BottomNavigationDrawerFragment()
            bottomNavDrawerFragment.show(supportFragmentManager, bottomNavDrawerFragment.tag)
        }

        // handle click event of FloatingActionButton
        fab.setOnClickListener {
            toast("Fab Icon Clicked")

        }

        //handle click event of menu of BottomAppBar
        bottomBar.setOnMenuItemClickListener { menuItem ->

            when (menuItem!!.itemId) {
                R.id.app_bar_search -> toast("Search menu of bottomBar is clicked!")
            }

            true
        }
    }

    // Overriding Actionbar menu
    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        val inflater = menuInflater
        inflater.inflate(R.menu.toolbar_menu, menu)
        return true
    }


    //handle click event of menu of Actionbar
    override fun onOptionsItemSelected(item: MenuItem?): Boolean {
        when (item!!.itemId) {
            R.id.app_bar_fav -> toast("Fav menu item of toolbar is clicked!")
            R.id.app_bar_search -> toast("Search menu item of toolbar is clicked!")
            R.id.app_bar_settings -> toast("Settings item  of toolbar is clicked!")
            else -> toast("Menu item  of toolbar  is clicked!")
        }

        return true
    }

    // method to display toast
    private fun toast(message: String) {
        Toast.makeText(this, message, Toast.LENGTH_SHORT).show()
    }
}

layout.activity_main

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/main_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#ffffff"
    android:fitsSystemWindows="true">

    <com.google.android.material.bottomappbar.BottomAppBar
        android:id="@+id/bottomBar"
        style="@style/Widget.MaterialComponents.BottomAppBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        app:fabCradleMargin="10dp"
        app:fabCradleVerticalOffset="4dp"
        android:backgroundTint="@color/colorPrimary"
        app:fabAlignmentMode="center"
        app:navigationIcon="@drawable/ic_drawer"/>

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_anchor="@id/bottomBar"
        app:srcCompat="@drawable/ic_apps" />

</androidx.coordinatorlayout.widget.CoordinatorLayout>

bottom_nav_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">


    <com.google.android.material.navigation.NavigationView
        android:id="@+id/navigation_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:menu="@menu/nav_drawer_menu"/>

</androidx.constraintlayout.widget.ConstraintLayout>

Java Lover 的示例代码

BottomNavigationDrawerFragment

import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;
import com.google.android.material.bottomsheet.BottomSheetDialogFragment;
import com.google.android.material.navigation.NavigationView;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import neel.com.bottomappbar.R;

public class BottomNavigationDrawerFragment extends BottomSheetDialogFragment {

    private Context mContext;

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        mContext=context;
    }

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {

        View rootView= inflater.inflate(R.layout.bottom_nav_layout, container, false);

        NavigationView navigationView=rootView.findViewById(R.id.navigation_view);

        navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {

                switch (menuItem.getItemId()){
                    case R.id.navItemOne:
                        Toast.makeText(mContext, "Nav item One is Clicked ", Toast.LENGTH_SHORT).show();
                        return true;
                    case R.id.navItemTwo:
                        Toast.makeText(mContext, "Nav item Two is Clicked ", Toast.LENGTH_SHORT).show();
                        return true;
                    case R.id.navItemThree:
                        Toast.makeText(mContext, "Nav item Three is Clicked ", Toast.LENGTH_SHORT).show();
                        return true;
                }
                return false;
            }
        });

        return rootView;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
    }
}

MainActivity

import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;
import com.google.android.material.bottomappbar.BottomAppBar;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import neel.com.bottomappbar.R;

public class MainActivity extends AppCompatActivity {

    BottomAppBar bottomAppBar;
    FloatingActionButton floatingActionButton;

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

        bottomAppBar = findViewById(R.id.bottomBar);

        //  attach menu to your BottomAppBar
        bottomAppBar.replaceMenu(R.menu.bottom_menu);

        // handle click event of navigationIcon of bottomAppBar
        bottomAppBar.setNavigationOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                BottomNavigationDrawerFragment bottomNavigationDrawerFragment = new BottomNavigationDrawerFragment();
                bottomNavigationDrawerFragment.show(getSupportFragmentManager(), bottomNavigationDrawerFragment.getTag());
            }
        });

        //handle click event of menu of BottomAppBar
        bottomAppBar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem item) {
                switch (item.getItemId()) {
                    case R.id.app_bar_search:
                        Toast.makeText(MainActivity.this, "Search menu of bottomBar is clicked!", Toast.LENGTH_SHORT).show();
                        return true;
                    case R.id.app_bar_fav:
                        Toast.makeText(MainActivity.this, "Favorite menu of bottomBar is clicked!", Toast.LENGTH_SHORT).show();
                        return true;

                }
                return false;
            }
        });

        floatingActionButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(MainActivity.this, "Fab Is clicked ", Toast.LENGTH_SHORT).show();
            }
        });
    }

    // Overriding Actionbar menu
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.toolbar_menu, menu);
        return true;
    }

    //handle click event of menu of Actionbar
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.app_bar_fav:
                Toast.makeText(MainActivity.this, "Fav menu item of toolbar is clicked!", Toast.LENGTH_SHORT).show();
                return true;
            case R.id.app_bar_search:
                Toast.makeText(MainActivity.this, "Search menu item of toolbar is clicked!", Toast.LENGTH_SHORT).show();
                return true;
            case R.id.app_bar_settings:
                Toast.makeText(MainActivity.this, "app_bar_settings", Toast.LENGTH_SHORT).show();
                return true;

        }
        return false;
    }
}

更多信息请查看以下文章

• Bottom App Bar. How to start
• Implementing Google’s newly launched Bottom AppBar
• Implementing BottomAppBar I: Material Components for Android
• Bottom App Bars

OUTPUT

https://www.youtube.com/watch?v=k145bGLrleo

旧答案

尝试将此 PopupMenu 附加到您的底部 View 点击事件中，例如按钮点击事件

第 1 步 像这样在布局的底部创建一个 View

<View
android:layout_gravity="center"
android:id="@+id/myView"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>

第 2 步 像这样创建一个 new_menu.xml 文件

<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
    android:id="@+id/temp"
    android:title="@string/str_menu_account_logout"
    android:icon="@drawable/next"
    app:showAsAction="ifRoom"></item>

</menu>

现在添加此代码以在您的 java 文件中创建选项菜单

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.new_menu, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {

    if (item.getItemId() == R.id.temp) {
        PopupMenu popupMenu = new PopupMenu(this, findViewById(R.id.myView),Gravity.CENTER);
        popupMenu.inflate(R.menu.home_menu);
        popupMenu.show();
        return true;
    }

    return false;

}

关于java - 如何使选项菜单出现在屏幕底部？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44676579/