なぜonCreateOptionsMenuがメニューを表示していないのかを理解する

Question

私はAndroid For Dummiesで読んでいます。一つの例は、onCreateOptionsMenuを使用しています（私は、ログメッセージを追加しました）：

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    super.onCreateOptionsMenu(menu); 
    MenuInflater mi = getMenuInflater(); 
    mi.inflate(R.menu.list_menu, menu); 
    Log.d("ReminderListActivity","Why is there no menu?"); 
    return true; 
} 

私はEclipseでエラーを持っていないと私はエミュレータ上でアプリケーションを実行すると、私はログメッセージを確認できます。

を

07-10 11:38:56.993: WARN/KeyCharacterMap(382): No keyboard for id 0 
07-10 11:38:56.993: WARN/KeyCharacterMap(382): Using default keymap: /system/usr/keychars/qwerty.kcm.bin 
07-10 11:38:57.023: DEBUG/hello(382): Why is there no menu? 

メニューが表示されず、なぜうまくいかないのかわかりません。誰か助けてくれますか？ここで

はlist_menu.xmlです：ここでは

<?xml version="1.0" encoding="utf-8"?> 
<menu 
    xmlns:android="http://schemas.android.com/apk/res/android"> 
    <item 
    android:id="@+id/menu_insert" 
    android:icon="@android:drawable/ic_menu_add" 
    android:title="@string/menu_insert" 
    /> 
</menu> 

はもっとLogCatである：ここでは

07-10 18:15:11.501: DEBUG/KeyguardViewMediator(58): pokeWakelock(5000) 
07-10 18:15:11.881: DEBUG/KeyguardViewMediator(58): pokeWakelock(5000) 
07-10 18:15:12.201: INFO/ARMAssembler(58): generated scanline__00000077:03545404_00000004_00000000 [ 47 ipp] (67 ins) at [0x356548:0x356654] in 1684001 ns 
07-10 18:15:12.251: INFO/ARMAssembler(58): generated scanline__00000177:03515104_00001001_00000000 [ 91 ipp] (114 ins) at [0x356658:0x356820] in 901000 ns 
07-10 18:15:19.494: WARN/KeyCharacterMap(296): No keyboard for id 0 
07-10 18:15:19.494: WARN/KeyCharacterMap(296): Using default keymap: /system/usr/keychars/qwerty.kcm.bin 
07-10 18:15:19.501: DEBUG/ReminderListActivity(296): Why is there no menu? 
07-10 18:15:39.422: DEBUG/AndroidRuntime(303): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<< 
07-10 18:15:39.422: DEBUG/AndroidRuntime(303): CheckJNI is ON 
07-10 18:15:39.671: DEBUG/AndroidRuntime(303): --- registering native functions --- 
07-10 18:15:40.621: DEBUG/AndroidRuntime(303): Shutting down VM 
07-10 18:15:40.831: DEBUG/jdwp(303): adbd disconnected 
07-10 18:15:40.851: INFO/AndroidRuntime(303): NOTE: attach of thread 'Binder Thread #3' failed 
07-10 18:15:41.671: DEBUG/AndroidRuntime(311): >>>>>> >>>>>>> AndroidRuntime START <<<<<<<<<<<<<< 
07-10 18:15:41.671: DEBUG/AndroidRuntime(311): CheckJNI is ON 
07-10 18:15:41.891: DEBUG/AndroidRuntime(311): --- registering native functions --- 
07-10 18:15:42.861: INFO/ActivityManager(58): Force stopping package com.dummies.android.taskreminder uid=10034 
07-10 18:15:42.891: INFO/Process(58): Sending signal. PID: 296 SIG: 9 
07-10 18:15:42.971: INFO/WindowManager(58): WIN DEATH: Window{450347c8 com.dummies.android.taskreminder/com.dummies.android.taskreminder.ReminderListActivity paused=false} 
07-10 18:15:42.991: INFO/UsageStats(58): Unexpected resume of com.android.launcher while already resumed in com.dummies.android.taskreminder 
07-10 18:15:43.061: INFO/ActivityManager(58): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.dummies.android.taskreminder/.ReminderListActivity } 
07-10 18:15:43.081: DEBUG/AndroidRuntime(311): Shutting down VM 
07-10 18:15:43.091: DEBUG/dalvikvm(311): Debugger has detached; object registry had 1 entries 
07-10 18:15:43.141: INFO/AndroidRuntime(311): NOTE: attach of thread 'Binder Thread #3' failed 
07-10 18:15:43.371: INFO/ActivityManager(58): Start proc com.dummies.android.taskreminder for activity com.dummies.android.taskreminder/.ReminderListActivity: pid=318 uid=10034 gids={} 
07-10 18:15:43.411: WARN/InputManagerService(58): Got RemoteException sending setActive(false) notification to pid 296 uid 10034 
07-10 18:15:43.961: WARN/ActivityThread(318): Application com.dummies.android.taskreminder is waiting for the debugger on port 8100... 
07-10 18:15:44.011: INFO/System.out(318): Sending WAIT chunk 
07-10 18:15:44.311: INFO/dalvikvm(318): Debugger is active 
07-10 18:15:44.441: INFO/System.out(318): Debugger has connected 
07-10 18:15:44.451: INFO/System.out(318): waiting for debugger to settle... 
07-10 18:15:44.651: INFO/System.out(318): waiting for debugger to settle... 
07-10 18:15:44.851: INFO/System.out(318): waiting for debugger to settle... 
07-10 18:15:45.051: INFO/System.out(318): waiting for debugger to settle... 
07-10 18:15:45.081: INFO/ARMAssembler(58): generated scanline__00000077:03515104_00000000_00000000 [ 33 ipp] (47 ins) at [0x369920:0x3699dc] in 556000 ns 
07-10 18:15:45.251: INFO/System.out(318): waiting for debugger to settle... 
07-10 18:15:45.461: INFO/System.out(318): waiting for debugger to settle... 
07-10 18:15:45.662: INFO/System.out(318): waiting for debugger to settle... 
07-10 18:15:45.861: INFO/System.out(318): waiting for debugger to settle... 
07-10 18:15:46.061: INFO/System.out(318): waiting for debugger to settle... 
07-10 18:15:46.271: INFO/System.out(318): waiting for debugger to settle... 
07-10 18:15:46.473: INFO/System.out(318): waiting for debugger to settle... 
07-10 18:15:46.675: INFO/System.out(318): waiting for debugger to settle... 
07-10 18:15:46.881: INFO/System.out(318): debugger has settled (1404) 
07-10 18:15:48.112: INFO/ActivityManager(58): Displayed activity com.dummies.android.taskreminder/.ReminderListActivity: 4788 ms (total 4788 ms) 
07-10 18:15:53.321: DEBUG/dalvikvm(129): GC_EXPLICIT freed 2287 objects/109048 bytes in 114ms 
07-10 18:16:11.591: WARN/KeyCharacterMap(318): No keyboard for id 0 
07-10 18:16:11.591: WARN/KeyCharacterMap(318): Using default keymap: /system/usr/keychars/qwerty.kcm.bin 
07-10 18:16:11.621: DEBUG/ReminderListActivity(318): Why is there no menu? 

は完全なクラスです：

package com.dummies.android.taskreminder; 

import android.app.ListActivity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.ContextMenu; 
import android.view.ContextMenu.ContextMenuInfo; 
import android.view.Menu; 
import android.view.MenuInflater; 
import android.view.View; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 

public class ReminderListActivity extends ListActivity { 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.reminder_list); 

     String[] items = new String[] {"Foo","Bar", "Fizz", "Bin"}; 
     ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.reminder_row, R.id.text1, items); 

     setListAdapter(adapter); 

     registerForContextMenu(getListView()); 
    } 

    @Override 
    protected void onListItemClick(ListView l, View v, int position, long id) { 
     super.onListItemClick(l, v, position, id); 
     Intent i = new Intent(this, ReminderEditActivity.class); 
     i.putExtra("RowId", id); 
     startActivity(i); 
    } 

    @Override 
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 
     super.onCreateContextMenu(menu, v, menuInfo); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     super.onCreateOptionsMenu(menu); 
     MenuInflater mi = getMenuInflater(); 
     mi.inflate(R.menu.list_menu, menu); 
     Log.d("ReminderListActivity","Why is there no menu?"); 
     return true; 
    } 
} 

Answer 1

私はラインsuper.onCreateOptionsMenu(menu);を削除し、しようとするだろうもう一度。これはAndroids Inflating a Menu Resourceセクションにも例示されています。

Answer 2

はそれを

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    MenuInflater mi = getMenuInflater(); 
    mi.inflate(R.menu.list_menu, menu); 
    return super.onCreateOptionsMenu(menu); 
}

Answer 3

を膨張させた後、スーパーメソッドを呼び出します。この質問は、ここで回答されています

My menu in my activity is not appearing because my onCreateOptionsMenu is not getting called

私はこの本を勉強しながら、同じ問題を抱えていました。コードは正しいですが、表示させるにはメニューボタンを押す必要があります。 :)

Answer 4

アクティビティが作成されたときにonCreateOptionsMenu（）が呼び出されます。明示的に呼び出す必要はありません。 あなたのアクティビティにタイトルバーがあるかどうかを確認してください。それが表示されないようにするか、またはアクティビティでタイトルバープロパティを削除しないでください。