Android menu 简例

2024-02-26 22:04:46

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/tv_contextmenu"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="32dp"
        android:gravity="center"
        android:text="触发上下文菜单"
        android:textSize="30sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toTopOf="@+id/bt_contextview"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <Button
        android:id="@+id/bt_contextview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="8dp"
        android:text="弹出菜单"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/tv_contextmenu" />
</androidx.constraintlayout.widget.ConstraintLayout>

context_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:title="扫一扫" android:icon="@drawable/ic_launcher_background"/>
    <item android:title="看一看" />
    <item android:title="朋友圈" >
        <menu >
            <group android:checkableBehavior="single">
                <item android:title="B"  android:icon="@drawable/ic_launcher_background"/>
                <item android:title="A " />
            </group>
        </menu>
    </item>
</menu>

options_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">
    <group android:checkableBehavior="all">
        <item  android:title="文件(F)"
            android:checkable="false">
            <menu>
                <group>
                    <item
                        android:id="@+id/new_file"
                        android:icon="@drawable/ic_launcher_background"
                        android:title="新建"/>
                    <item
                        android:id="@+id/open_file"
                        android:icon="@drawable/ic_launcher_background"
                        android:title="打开"/>
                    <item
                        android:id="@+id/save_file"
                        android:title="保存">
                    </item>
                    <item
                        android:id="@+id/rename_file"
                        android:title="重命名"/>
                </group>
            </menu>
        </item>
        <item
            android:checkable="false"
            app:showAsAction="never"
            android:title="编辑(E)">
            <menu>
                <item
                    android:id="@+id/v_file"
                    android:title="粘贴"/>
                <item
                    android:id="@+id/c_edit"
                    android:title="复制"/>

                <item
                    android:id="@+id/x_edit"
                    android:title="剪切"/>

                <item
                    android:id="@+id/rename_edit"
                    android:title="重命名"/>
            </menu>

        </item>
        <item
            android:title="Search"
            android:icon="@drawable/ic_launcher_background"
            app:actionViewClass="android.widget.SearchView"
            app:showAsAction="ifRoom|collapseActionView"
            />
        <item android:title="视图"
            android:checkable="true"
            android:id="@+id/shitu"/>
        <item android:title="导航"/>
        <item android:title="代码"/>
        <item android:title="分析"/>
        <item android:title="反射"/>
    </group>
</menu>

MainActivity.java

package com.jld.androidmenus;

import android.os.Bundle;
import android.view.ContextMenu;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.PopupMenu;
import android.widget.TextView;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {
    PopupMenu popupMenu;

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

        final TextView tv = (TextView) this.findViewById(R.id.tv_contextmenu);
        registerForContextMenu(tv);
        final Button button = (Button) this.findViewById(R.id.bt_contextview);
       /* button.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {

                if(event.getAction()==MotionEvent.ACTION_DOWN) {
                    PopupMenu popupMenu = new PopupMenu(MenuActivity.this, v, Gravity.TOP);
                   *//* Menu menu = popupMenu.getMenu();
                    MenuInflater inflater = popupMenu.getMenuInflater();
                    inflater.inflate(R.menu.options_menu, menu);
                    popupMenu.show();*//*
                }
                return true;
            }
        });*/
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                popupMenu = new PopupMenu(MainActivity.this, button);
                Menu menu = popupMenu.getMenu();
                MenuInflater inflater = popupMenu.getMenuInflater();
                inflater.inflate(R.menu.options_menu, menu);
                popupMenu.show();
            /*   popupMenu=new PopupMenu(MenuActivity.this,tv);
                 popupMenu.setGravity(Gravity.LEFT);
                 Menu menu=popupMenu.getMenu();
                 menu.add("苹果").setOnMenuItemClickListener(null);
                 menu.add("黄瓜").setOnMenuItemClickListener(null);
                 menu.add("苹果").setOnMenuItemClickListener(null);
                 menu.add("黄瓜").setOnMenuItemClickListener(null);
                 popupMenu.show();*/
            }
        });
    }

    //创建OptionsMenu
    @Override
    protected void onPostCreate(@Nullable Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        //使用XML方式创建选项菜单
        MenuInflater menuInflater = this.getMenuInflater();
        menuInflater.inflate(R.menu.options_menu, menu);
        System.out.println("88888");
        //使用Java代码方式创建选项菜单
      /*  menu.add("文件");
        menu.add("新建").setCheckable(true);
        menu.add("打开");
        menu.add("编辑");
        menu.add("视图");*/
        //menu.setGroupCheckable(groupID,false,false);
      /*  SubMenu fontSubMenu= menu.addSubMenu("字体");
        SubMenu fontSize=fontSubMenu.addSubMenu("字体大小");
        fontSize.add(0,0,1,"10号字体").setIcon(R.drawable.email);
        fontSize.add(0,1,2,"11号字体");
        MenuItem menuItem = fontSize.add(0, 2, 0, "12号字体").setIntent(new Intent(this,UserActivity.class ));
        fontSize.setGroupCheckable(0,false,false);
        SubMenu fontType=fontSubMenu.addSubMenu("字体类型");
        fontType.add(1,0,0,"宋体").setIcon(R.drawable.address);
        fontType.add(1,1,1,"楷体");
        fontType.add(1,2,2,"隶书");
        fontType.setGroupCheckable(1,true,false);*/
        return true;
    }

    //选项菜单事件处理方法


    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
        Toast.makeText(this, "groupID:" + item.getGroupId() +
                ":" + item.getTitle().toString(), Toast.LENGTH_LONG).show();


        //!!!!!!!!!!!!!!!!!!!!!!!!!!!选中菜单项
        if (item.isCheckable()) {
            item.setChecked(true);
            System.out.println("test");
        }


        /* switch (item.getTitle().toString().trim()){
           case "文件":
               Intent intent=new Intent(this,DialogActivity.class);
               this.startActivity(intent);
               break;
           case "Edit": break;
           case "View": break;

        }*/
        if (item.getTitle().toString().equals("12号字体")) {
            //item.setChecked(true);
            startActivity(item.getIntent());
        }
        return true;
    }

    //重写创建上下文菜单方法
    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        MenuInflater inflater = this.getMenuInflater();
        inflater.inflate(R.menu.context_menu, menu);
       /*   menu.setHeaderTitle("国籍上下文菜单");
          menu.add("China");
          menu.add("America");
          menu.add("Russia");*/
    }

    //重写处理上下文菜单项事件的方法
    @Override
    public boolean onContextItemSelected(MenuItem item) {
        Toast toast = Toast.makeText(this, item.getTitle().toString(), Toast.LENGTH_LONG);
        toast.show();

        return true;
    }
}

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