AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.helloworld"
          android:versionCode="1"
          android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
          android:versionName="1.0">
    <uses-sdk android:minSdkVersion="14"/>

    <uses-permission android:name="android.permission.CAMERA" />
    <uses-feature android:name="android.hardware.camera" />
    <uses-feature android:name="android.hardware.camera.autofocus" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <application android:label="@string/app_name" android:icon="@drawable/ic_launcher">

        <activity android:name="Hello"
                  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.helloworld.DisplayMessageActivity"
                android:label="Display"
                >
            <meta-data
                    android:name="android.support.PARENT_ACTIVITY"
                    android:value="com.helloworld.Hello" />
        </activity>

        <activity
                android:name="com.camera.CameraActivity"
                android:label="Camera">

            <meta-data
                    android:name="android.support.PARENT_ACTIVITY"
                    android:value="com.helloworld.Hello" />
        </activity>
        <activity android:name="com.customview.SampleView"
                android:label="Custom View">

            <meta-data
                    android:name="android.support.PARENT_ACTIVITY"
                    android:value="com.helloworld.Hello" />
        </activity>
    </application>
</manifest>