【Android】弹出菜单popupmenu

转于：http://blog.csdn.net/zhangzeyuaaa/article/details/40711047

 

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弹出菜单popupmenu就是点击某个组件时弹出的菜单。

Activity类：

package com.zzj.ui.popupmenudemo;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.PopupMenu;
import android.widget.PopupMenu.OnMenuItemClickListener;
import android.widget.Toast;

import com.zzj.ui.R;

public class PopupMenuActivity extends Activity {
    PopupMenu popupMenu;
    Menu menu;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.popupmenu_activity);

        popupMenu = new PopupMenu(this, findViewById(R.id.popupmenu_btn));
        menu = popupMenu.getMenu();

        // 通过代码添加菜单项
        menu.add(Menu.NONE, Menu.FIRST + 0, 0, "复制");
        menu.add(Menu.NONE, Menu.FIRST + 1, 1, "粘贴");

        // 通过XML文件添加菜单项
        MenuInflater menuInflater = getMenuInflater();
        menuInflater.inflate(R.menu.popupmenu, menu);

        // 监听事件
        popupMenu.setOnMenuItemClickListener(new OnMenuItemClickListener() {

            @Override
            public boolean onMenuItemClick(MenuItem item) {
                switch (item.getItemId()) {
                case R.id.news:
                    Toast.makeText(PopupMenuActivity.this, "新建",
                            Toast.LENGTH_LONG).show();
                    break;
                case R.id.open:
                    Toast.makeText(PopupMenuActivity.this, "打开",
                            Toast.LENGTH_LONG).show();
                    break;
                case Menu.FIRST + 0:
                    Toast.makeText(PopupMenuActivity.this, "复制",
                            Toast.LENGTH_LONG).show();
                    break;
                case Menu.FIRST + 1:
                    Toast.makeText(PopupMenuActivity.this, "粘贴",
                            Toast.LENGTH_LONG).show();
                    break;
                default:
                    break;
                }
                return false;
            }
        });
    }

    public void popupmenu(View v) {
        popupMenu.show();
    }
}

Activity布局文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <Button
        android:id="@+id/popupmenu_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:onClick="popupmenu"
        android:text="弹出菜单" />

</LinearLayout>

popupmenu布局文件：

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

    <item
        android:id="@+id/news"
        android:title="新建"/>
    <item
        android:id="@+id/open"
        android:title="打开"/>

</menu>

效果：