您做有程序包不匹配错误，它必须为:

You do have a package mismatch error, it needs to be:

package="com.haber29.android.reader"

由于 reader 是下一个子程序包，而 this 是包含活动"的子程序包.

Since reader is the next subpackage and this is the subpackage that contains the Activities.

别忘了，您可以为每个活动指定完全限定的名称，以免引起混淆:

And don't forget, you can specify the fully qualified name for each Activity, to prevent confusion:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.haber29.android"
    android:versionCode="3"
    android:versionName="1.0" >
    <uses-sdk android:minSdkVersion="7" />
    <uses-permission android:name="android.permission.INTERNET"/>
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name">
        <activity
            android:name="com.haber29.android.reader.ITCutiesReaderAppActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.haber29.android.reader.ItemDescriptionActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
            </intent-filter>
            </activity>
    </application>
</manifest>