Android 改变发射活动

我想更改我的启动活动。目前我的清单如下：

<application android:icon="@drawable/iconbj" android:label="@string/app_name"
    android:debuggable="true">
    <activity android:name=".Main" android:label="@string/app_name" android:screenOrientation="landscape">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:label="DemoPlayActivity" android:name="DemoPlayActivity" android:screenOrientation="landscape"></activity>

</application>

<application android:icon="@drawable/iconbj" android:label="@string/app_name"
    android:debuggable="true">
    <activity android:name=".Splash" android:label="@string/app_name"
        android:screenOrientation="landscape">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name="Main" android:label="Main"
        android:screenOrientation="landscape">
    </activity>
    <activity android:label="DemoPlayActivity" android:name="DemoPlayActivity"
        android:screenOrientation="landscape"></activity>

</application>

为什么？

<application android:icon="@drawable/iconbj" android:label="@string/app_name"
    android:debuggable="true">
    <activity android:name=".Main" android:label="@string/app_name" android:screenOrientation="landscape">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:label="DemoPlayActivity" android:name="DemoPlayActivity" android:screenOrientation="landscape"></activity>

</application>

<application android:icon="@drawable/iconbj" android:label="@string/app_name"
    android:debuggable="true">
    <activity android:name=".Splash" android:label="@string/app_name"
        android:screenOrientation="landscape">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name="Main" android:label="Main"
        android:screenOrientation="landscape">
    </activity>
    <activity android:label="DemoPlayActivity" android:name="DemoPlayActivity"
        android:screenOrientation="landscape"></activity>

</application>

仍应具有领先的

<application android:icon="@drawable/iconbj" android:label="@string/app_name"
    android:debuggable="true">
    <activity android:name=".Main" android:label="@string/app_name" android:screenOrientation="landscape">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:label="DemoPlayActivity" android:name="DemoPlayActivity" android:screenOrientation="landscape"></activity>

</application>

<application android:icon="@drawable/iconbj" android:label="@string/app_name"
    android:debuggable="true">
    <activity android:name=".Splash" android:label="@string/app_name"
        android:screenOrientation="landscape">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name="Main" android:label="Main"
        android:screenOrientation="landscape">
    </activity>
    <activity android:label="DemoPlayActivity" android:name="DemoPlayActivity"
        android:screenOrientation="landscape"></activity>

</application>

<activity android:name=".Main" android:label="Main" android:screenOrientation="landscape">
</activity>
<activity android:label=".DemoPlayActivity" android:name="DemoPlayActivity"android:screenOrientation="landscape">
</activity>

---

这说明它有一个到类的相对路径。如果愿意，您可以进行绝对引用，即

“com.your.app.Main”

尝试从emulator菜单>设置>应用程序>卸载完全卸载应用程序。然后再次运行？如果需要提供更多信息，请编辑您的问题，或在“个人答案”下编辑评论工具。

<application android:icon="@drawable/iconbj" android:label="@string/app_name"
    android:debuggable="true">
    <activity android:name=".Main" android:label="@string/app_name" android:screenOrientation="landscape">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:label="DemoPlayActivity" android:name="DemoPlayActivity" android:screenOrientation="landscape"></activity>

</application>

<application android:icon="@drawable/iconbj" android:label="@string/app_name"
    android:debuggable="true">
    <activity android:name=".Splash" android:label="@string/app_name"
        android:screenOrientation="landscape">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity android:name="Main" android:label="Main"
        android:screenOrientation="landscape">
    </activity>
    <activity android:label="DemoPlayActivity" android:name="DemoPlayActivity"
        android:screenOrientation="landscape"></activity>

</application>