AndroidのUI - PopupMenu - liguofeng29’s blog

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="show popup menu"
        android:onClick="clickBtn"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true" />
</RelativeLayout>

popup_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
   <item
      android:id="@+id/search"
      android:icon="@android:drawable/ic_menu_search"
      android:title="search" />
   <item
      android:id="@+id/add"
      android:icon="@android:drawable/ic_menu_add"
      android:title="add" />
   <item
      android:id="@+id/edit"
      android:icon="@android:drawable/ic_menu_edit"
      android:title="edit">
      <menu>
         <item
            android:id="@+id/copy"
            android:title="copy" />
         <item
            android:id="@+id/cut"
            android:title="cut" />
         <item
            android:id="@+id/paste"
            android:title="paste" />
      </menu>
   </item>
   <item
      android:id="@+id/exit"
      android:title="hide" />
</menu>

MainActivity.java

package com.example.liguofeng.popupmenu;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.PopupMenu;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

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

    public void clickBtn(View view) {
        //　①生成
        PopupMenu popupMenu = new PopupMenu(this, view);

        // ②MenuInflater.inflate()
        getMenuInflater().inflate(R.menu.popup_menu, popupMenu.getMenu());
        // callback
        popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem item) {
                //Toast.makeText(this, item.getTitle(),Toast.LENGTH_SHORT).show();
                Toast.makeText(MainActivity.this, item.getTitle(), Toast.LENGTH_SHORT).show();
                return true;
            }
        });
        //　③表示
        popupMenu.show();
    }
}