解决subModule 或者 lib fileProvider

public class XiaoNengFileProvider extends FileProvider {
}

    <provider
            android:name="com.aihuishou.opt.xiaoneng.XiaoNengFileProvider"
            android:authorities="${applicationId}.fileprovider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/file_paths"/>
        </provider>