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安卓学习UI组件-Menu-选项菜单-上下文菜单-弹出式菜单

news 来源：原创 2024/5/1 0:38:32

2019独角兽企业重金招聘Python工程师标准>>>

一.选项菜单

activity_menu.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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.administrator.myapplication.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!" />
</RelativeLayout>

menu-main.xml

<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"
    tools:context="com.example.administrator.myapplication.MainActivity">
    <item
    android:id="@+id/game_set"
    android:orderInCategory="100"
    android:title="设置游戏"
    app:showAsAction="always"
        android:icon ="@android:drawable/ic_menu_set_as"/>

    <item
        android:id="@+id/game_start"
        android:orderInCategory="200"
        android:title="开始游戏"
        app:showAsAction="ifRoom" />


    <item
        android:id="@+id/game_exit"
        android:orderInCategory="300"
        android:title="退出游戏"
        app:showAsAction="never" />
<item android:title="haha">
    <menu>
        <item
            android:id="@+id/game_starta"
            android:orderInCategory="200"
            android:title="开始游戏"
            app:showAsAction="ifRoom" />


    </menu>
</item>
</menu>

MainActivity.java


import android.app.Activity;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

/*选项菜单*/
public class MainActivity extends Activity {

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

    //用于创建选项菜单的事件方法，在打开界面时会被自动调用
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
      //getMenuInflater（），获取一个菜单填充器
        getMenuInflater().inflate(R.menu.menu_main, menu);
        //添加菜单项（组的ID，当前选项ID，排序编号，名称） 每一个为一个MenuItemd对象
     /*   menu.add(0, 100, 1, "设置游戏");
        menu.add(0, 200, 2, "开始游戏");
        menu.add(0, 300, 3, "退出游戏");*/

        return true;
    }


    //菜单选项的单击事件处理
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();

        switch(id)
        {
           /* case 100:
                Toast.makeText(this,"正在打开设置游戏界面...",Toast.LENGTH_SHORT).show();
                break;
            case 200:
                Toast.makeText(this,"正在启动游戏界面...",Toast.LENGTH_SHORT).show();
                break;
            case 300:
                Toast.makeText(this,"正在退出游戏...",Toast.LENGTH_SHORT).show();
                break;*/

            case R.id.game_set:
                Toast.makeText(this,"正在打开设置游戏界面...",Toast.LENGTH_SHORT).show();
                break;
            case R.id.game_start:
                Toast.makeText(this,"正在启动游戏界面...",Toast.LENGTH_SHORT).show();
                break;
            case R.id.game_exit:
                Toast.makeText(this,"正在退出游戏...",Toast.LENGTH_SHORT).show();
                break;
        }

        return super.onOptionsItemSelected(item);
    }
}

二.上下文菜单 Context menu

XO`[~(FN45HFJ~ZK}Y%U8S4

activity_main2.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"

    tools:context="com.example.administrator.myapplication.MainActivity2">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:text="长按我设置背景颜色"
        android:gravity="center"
        android:id="@+id/textView"/>
</RelativeLayout>

memu_main2.xml

<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"
    tools:context="com.example.administrator.myapplication.MainActivity">
    <item
        android:id="@+id/red"
        android:icon="@android:drawable/ic_menu_set_as"
        android:orderInCategory="100"
        android:title="红色" />
    <item
        android:id="@+id/blue"
        android:icon="@android:drawable/ic_menu_set_as"
        android:orderInCategory="200"
        android:title="蓝色" />

    <item
        android:id="@+id/green"
        android:icon="@android:drawable/ic_menu_set_as"
        android:orderInCategory="300"
        android:title="绿色" />



</menu>

MainActivity2.java

package com.example.administrator.myapplication;

import android.graphics.Color;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;

import org.w3c.dom.Text;

//上下文菜单
public class MainActivity2 extends ActionBarActivity {
private TextView tv;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        tv= (TextView) findViewById(R.id.textView);

        //注册上下文菜单到tv组件上
        registerForContextMenu(tv);
    }

    //1.重写方法  创建上下文菜单的事件方法
    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        super.onCreateContextMenu(menu, v, menuInfo);
   //menu.add();
getMenuInflater().inflate(R.menu.menu_main2,menu);

    }

//上下文菜单的单击事件 重写方法


    @Override
    public boolean onContextItemSelected(MenuItem item) {
        switch (item.getItemId())
        {
            case R.id.red:
                tv.setBackgroundColor(Color.RED);
                break;
            case R.id.blue:
                tv.setBackgroundColor(Color.BLUE);
                break;
            case R.id.green:
                tv.setBackgroundColor(Color.GREEN);
                break;
        }
        return super.onContextItemSelected(item);


    }
}

三.弹出式菜单 Popup menu

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activity_main3.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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.administrator.myapplication.MainActivity3">


<Button
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/button_select"
android:text="请选择型号"
    android:onClick="typeSizeClick"
    />

</RelativeLayout>

memu_main3.xml

<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"
    tools:context="com.example.administrator.myapplication.MainActivity">
    <item
        android:id="@+id/s"
        android:orderInCategory="100"
        android:title="S" />
    <item
        android:id="@+id/m"
        android:orderInCategory="200"
        android:title="M" />
    <item
        android:id="@+id/l"
        android:orderInCategory="300"
        android:title="L" />



</menu>

MainActivity3.java

package com.example.administrator.myapplication;

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

//弹出式菜单
public class MainActivity3 extends ActionBarActivity {

    private Button buttonSelect;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main3);
        buttonSelect= (Button) findViewById(R.id.button_select);
    }
//按钮的单击事件
    public void typeSizeClick(View v)
    {
        //创建弹出式菜单
        PopupMenu popupMenu=new PopupMenu(this,v);
        //API14以上 直接使用PopupMenu.inflate()
MenuInflater inflater=popupMenu.getMenuInflater();
        inflater.inflate(R.menu.menu_main3,popupMenu.getMenu());

//弹出式菜单的选项单击事件
        popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem item) {

                switch (item.getItemId()) {
                    case R.id.s:
                        Toast.makeText(MainActivity3.this,"您选择了S号",Toast.LENGTH_SHORT).show();
                        break;
                    case R.id.m:
                        Toast.makeText(MainActivity3.this,"您选择了M号",Toast.LENGTH_SHORT).show();
                        break;
                    case R.id.l:
                        Toast.makeText(MainActivity3.this,"您选择了L号",Toast.LENGTH_SHORT).show();
                        break;
                }
                return true;
            }
        });
        popupMenu.show();
    }



}