Question

我正在使用http://www.androidhive.info/2012/05/android-combining-tab-layout-and-list-view/中的“标签布局和列表视图”和http://www.androidhive.info/2011/09/how-to-create-android-menus/中的“Android菜单”。我将它们合并在一起，但它不起作用。该选项卡有效，但不适用于菜单。这是我的代码。

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.widget.Toast;

public class optionMenuActivity extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }

    // Initiating Menu XML file (menu.xml)
    @Override
    public boolean onCreateOptionsMenu(Menu menu)
    {
        MenuInflater menuInflater = getMenuInflater();
        menuInflater.inflate(R.layout.menu, menu);
        return true;
    }

    /**
     * Event Handling for Individual menu item selected
     * Identify single menu item by it's id
     * */
    @Override
    public boolean onOptionsItemSelected(MenuItem item)
    {
        Intent myList = new Intent();
        switch (item.getItemId())
        {
        case R.id.menu_login:
            // Single menu item is selected do something
            // Ex: launching new activity/screen or show alert message
         //   Toast.makeText(optionMenuActivity.this, "Bookmark is Selected", Toast.LENGTH_SHORT).show();
            myList = new Intent(optionMenuActivity.this, LoginActivity.class);
            startActivity(myList);
            return true;

        case R.id.menu_save:
            Toast.makeText(optionMenuActivity.this, "Save is Selected", Toast.LENGTH_SHORT).show();
            return true;

        case R.id.menu_search:
            Toast.makeText(optionMenuActivity.this, "Search is Selected", Toast.LENGTH_SHORT).show();
            return true;

        case R.id.menu_share:
            Toast.makeText(optionMenuActivity.this, "Share is Selected", Toast.LENGTH_SHORT).show();
            return true;

        case R.id.menu_delete:
            Toast.makeText(optionMenuActivity.this, "Delete is Selected", Toast.LENGTH_SHORT).show();
            return true;

        case R.id.menu_quit:
         //   Toast.makeText(optionMenuActivity.this, "Preferences is Selected", Toast.LENGTH_SHORT).show();
            Intent intent = new Intent(Intent.ACTION_MAIN);
            intent.addCategory(Intent.CATEGORY_HOME);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            startActivity(intent);
           // return true;

        default:
            return super.onOptionsItemSelected(item);
        }
    }   

}

主要来自“标签布局”

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <LinearLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">
        <TabWidget
            android:id="@android:id/tabs"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" />
        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"/>
    </LinearLayout>
</TabHost>

这是我的menu.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- Single menu item
         Set id, icon and Title for each menu item
    -->
    <item android:id="@+id/menu_login"
          android:icon="@drawable/icon_bookmark"
          android:title="Login" />

    <item android:id="@+id/menu_save"
          android:icon="@drawable/icon_save"
          android:title="Save" />

    <item android:id="@+id/menu_search"
          android:icon="@drawable/icon_search"
          android:title="Search" />

    <item android:id="@+id/menu_share"
          android:icon="@drawable/icon_share"
          android:title="Share" />

    <item android:id="@+id/menu_delete"
          android:icon="@drawable/icon_delete"
          android:title="Delete" /> 

    <item android:id="@+id/menu_quit"
          android:icon="@drawable/icon_preferences"
          android:title="Quit" />
</menu>

最后，我的清单。

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.example"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="8" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:name=".WorkDroid5"
            android:configChanges="keyboardHidden|orientation"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <!-- Inbox Activity -->
        <activity android:name=".AnnouncementActivity" />

        <!-- Outbox Activity -->
        <activity android:name=".HomeworkActivity" />

        <!-- Profile Activity -->
        <activity android:name=".TimetableActivity" />
        <activity android:name=".tt_Friday" />
        <activity android:name=".ttFinalDetails" />
        <activity android:name=".TimetableAdapter" />
        <activity android:name=".tt_Thursday" />
        <activity android:name=".tt_Monday" />
        <activity android:name=".tt_Tuesday" />
        <activity android:name=".tt_Wednesday" />
        <activity
            android:name=".RegisterActivity"
            android:label="Register New Account" >
        </activity>
        <activity
            android:name=".LoginActivity"
            android:label="Login to your Account" >
        </activity>


        <activity
            android:name=".optionMenuActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="com.example.example.OPTIONMENUACTIVITY" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>


    </application>

    <!-- Internet Permissions -->
    <uses-permission android:name="android.permission.INTERNET" />

</manifest>

提前感谢任何人的帮助（'：

Answer 1

下面：

public boolean onCreateOptionsMenu(Menu menu)
{
    MenuInflater menuInflater = getMenuInflater();
    menuInflater.inflate(R.layout.menu, menu);
    return true;
}

您将R.layout.menu传递给MenuInflater.inflate(..)方法，但它应该是R.menu.menu。将您的menu.xml文件从res/layout目录移至res/menu目录。

Answer 2

我遇到了与TabHost类似的问题。默认情况下，Android会为父活动创建一个选项菜单，即您的案例中的TabHost。子选项卡未收到OnCreateOptionsMenu事件。因此，您的菜单尚未创建。

将选项菜单创建/处理代码放在扩展TabActivity的活动中。您可以通过选中getTabHost.getCurrentTab或getTabHost.getCurrentTabTag并填充相应的菜单来检查当前选中的标签来更改首选项菜单内容。

结合菜单和标签

2 个答案: