<manifest package="tw.showang.recycleradaterbase"
		  xmlns:android="http://schemas.android.com/apk/res/android">

	<application android:allowBackup="true"
				 android:label="@string/app_name"
				 android:supportsRtl="true"/>

</manifest>

<manifest package="tw.showang.recycleradaterbase"
		  xmlns:android="http://schemas.android.com/apk/res/android">

</manifest>

Remove <application> for duplicate "allowBackup"
Remove <application> for duplicate "allowBackup"

The Manifest file of application attribute about "allowBackup" is true, so remove it.