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AndroidのUI - MenuItem to Activity

┗━UI Android

 

AndroidManifest.xml 
 
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.xxxxx.menutoactivity" >

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme" >
        <activity android:name=".MainActivity" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".OtherActivity"
            android:label="It is other activity" />
    </application>

</manifest>
 
MainActivity.java 
 
package com.example.liguofeng.menutoactivity;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.SubMenu;

public class MainActivity extends AppCompatActivity {

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

    // Menu設定
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
       //SubMenu subMenu = menu.addSubMenu("To other activity");

        MenuItem item = menu.add("To other activity");
        // Intent設定
        item.setIntent(new Intent(this, OtherActivity.class));

        return super.onCreateOptionsMenu(menu);
    }
}
 
OtherActivity.java 
 
package com.example.liguofeng.menutoactivity;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;

public class OtherActivity extends AppCompatActivity {

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