MainWindow.xib

<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="13196" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" colorMatched="YES">
    <device id="retina4_7" orientation="portrait">
        <adaptation id="fullscreen"/>
    </device>
    <dependencies>
        <deployment identifier="iOS"/>
        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13174"/>
        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
    </dependencies>
    <objects>
        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner" customClass="UIApplication">
            <connections>
                <outlet property="delegate" destination="3" id="4"/>
            </connections>
        </placeholder>
        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
        <customObject id="3" customClass="Dolphin6AppDelegate">
            <connections>
                <outlet property="window" destination="2" id="5"/>
            </connections>
        </customObject>
        <window opaque="NO" clearsContextBeforeDrawing="NO" contentMode="scaleToFill" visibleAtLaunch="YES" id="2">
            <rect key="frame" x="0.0" y="0.0" width="320" height="480"/>
            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMaxY="YES"/>
            <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
        </window>
        <tabBarController id="14">
            <extendedEdge key="edgesForExtendedLayout"/>
            <tabBar key="tabBar" clearsContextBeforeDrawing="NO" contentMode="scaleToFill" id="15">
                <rect key="frame" x="0.0" y="431" width="320" height="49"/>
                <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMinY="YES"/>
            </tabBar>
            <viewControllers>
                <viewController id="16">
                    <extendedEdge key="edgesForExtendedLayout"/>
                    <tabBarItem key="tabBarItem" title="Item 1" id="19"/>
                </viewController>
                <viewController id="17">
                    <extendedEdge key="edgesForExtendedLayout"/>
                    <tabBarItem key="tabBarItem" title="Item 2" id="18"/>
                </viewController>
            </viewControllers>
        </tabBarController>
    </objects>
</document>