Java 为什么可以'；我在avd应用程序菜单中看不到我的应用程序吗？

我的应用程序成功安装在我的AVD上，我可以通过在应用程序管理器中查看来确认它已安装，但我无法访问它，因为我无法在应用程序菜单中查看它

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

<application
    android:icon="@drawable/splash"
    android:label="@string/app_name" >
    <activity
        android:label="@string/app_name"
        android:name=".WhosurSenseiActivity" >
        <intent-filter >
            <action android:name="com.thepackage.WhosurSensei.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:label="@string/app_name"
        android:name=".MainMenu" >
    </activity>
</application>

</manifest>

在控制台中，我总是收到消息

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

<application
    android:icon="@drawable/splash"
    android:label="@string/app_name" >
    <activity
        android:label="@string/app_name"
        android:name=".WhosurSenseiActivity" >
        <intent-filter >
            <action android:name="com.thepackage.WhosurSensei.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:label="@string/app_name"
        android:name=".MainMenu" >
    </activity>
</application>

</manifest>

[2011-12-27 10:39:28-WhosurSensei]未发现任何发射器活动

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

<application
    android:icon="@drawable/splash"
    android:label="@string/app_name" >
    <activity
        android:label="@string/app_name"
        android:name=".WhosurSenseiActivity" >
        <intent-filter >
            <action android:name="com.thepackage.WhosurSensei.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:label="@string/app_name"
        android:name=".MainMenu" >
    </activity>
</application>

</manifest>

[2011-12-27 10:39:28-WhosurSensei]此次发射只会同步 设备上的应用程序包

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

<application
    android:icon="@drawable/splash"
    android:label="@string/app_name" >
    <activity
        android:label="@string/app_name"
        android:name=".WhosurSenseiActivity" >
        <intent-filter >
            <action android:name="com.thepackage.WhosurSensei.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:label="@string/app_name"
        android:name=".MainMenu" >
    </activity>
</application>

</manifest>

我的java主页

package com.thepackage.WhosurSensei;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class WhosurSenseiActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

   Button Button1 = (Button) findViewById(R.id.firstpagebutton);  
   Button1.setOnClickListener(new View.OnClickListener() {  

        public void onClick(View v) {   
            startActivity(new Intent(WhosurSenseiActivity.this, MainMenu.class));
        }  
    });    
}
@Override
protected void onPause() {
    super.onPause();
}
}

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

<application
    android:icon="@drawable/splash"
    android:label="@string/app_name" >
    <activity
        android:label="@string/app_name"
        android:name=".WhosurSenseiActivity" >
        <intent-filter >
            <action android:name="com.thepackage.WhosurSensei.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:label="@string/app_name"
        android:name=".MainMenu" >
    </activity>
</application>

</manifest>

我的androidmanifest页面

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

<application
    android:icon="@drawable/splash"
    android:label="@string/app_name" >
    <activity
        android:label="@string/app_name"
        android:name=".WhosurSenseiActivity" >
        <intent-filter >
            <action android:name="com.thepackage.WhosurSensei.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:label="@string/app_name"
        android:name=".MainMenu" >
    </activity>
</application>

</manifest>

---

显然，我正在阅读的教程告诉我错误，我需要在清单中显示：

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

<application
    android:icon="@drawable/splash"
    android:label="@string/app_name" >
    <activity
        android:label="@string/app_name"
        android:name=".WhosurSenseiActivity" >
        <intent-filter >
            <action android:name="com.thepackage.WhosurSensei.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:label="@string/app_name"
        android:name=".MainMenu" >
    </activity>
</application>

</manifest>

<action android:name="android.intent.action.MAIN" />