cocos2dx iphonex 全屏

从Xcode6开始，苹果添加了一种使用Storyboard布局文件的方法设置启动画面。这种方法完美解决以上两种配置方法暴露的问题。

要将Cocos2d-x工程如何修改为使用Storyboard启动画面，只需要简单几个步骤：

* 拷贝[LaunchScreen.storyboard](https://raw.githubusercontent.com/cocos2d/cocos2d-x/v3/tests/cpp-empty-test/proj.ios/LaunchScreen.storyboard)和[LaunchScreenBackground.png](https://github.com/cocos2d/cocos2d-x/raw/v3/tests/cpp-empty-test/proj.ios/LaunchScreenBackground.png)到`proj.ios`或者`ios`目录。

文件luanchScreen.stoyboard

<?xml version="1.0" encoding="UTF-8"?>

<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13771" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="01J-lp-oVM">

    <device id="retina5_9" orientation="landscape">

        <adaptation id="fullscreen"/>

    </device>

    <dependencies>

        <deployment version="1792" identifier="iOS"/>

        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13772"/>

        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>

    </dependencies>

    <scenes>

        <!--View Controller-->

        <scene sceneID="EHf-IW-A2E">

            <objects>

                <viewController id="01J-lp-oVM" sceneMemberID="viewController">

                    <layoutGuides>

                        <viewControllerLayoutGuide type="top" id="fm7-M6-edp"/>

                        <viewControllerLayoutGuide type="bottom" id="uRH-d6-mvd"/>

                    </layoutGuides>

                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">

                        <rect key="frame" x="0.0" y="0.0" width="812" height="375"/>

                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>

                        <subviews>

                            <imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="scaleAspectFill" insetsLayoutMarginsFromSafeArea="NO" image="LaunchScreenBackground.png" translatesAutoresizingMaskIntoConstraints="NO" id="YCC-wj-Gww" userLabel="Background">

                                <rect key="frame" x="0.0" y="0.0" width="812" height="375"/>

                            </imageView>

                        </subviews>

                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>

                        <constraints>

                            <constraint firstAttribute="bottom" secondItem="YCC-wj-Gww" secondAttribute="bottom" id="Naz-ae-jWI"/>

                            <constraint firstAttribute="trailing" secondItem="YCC-wj-Gww" secondAttribute="trailing" id="myj-85-hk9"/>

                            <constraint firstItem="YCC-wj-Gww" firstAttribute="leading" secondItem="Ze5-6b-2t3" secondAttribute="leading" id="qOq-Cg-doS"/>

                            <constraint firstItem="YCC-wj-Gww" firstAttribute="top" secondItem="Ze5-6b-2t3" secondAttribute="top" id="xL7-Fo-4bl"/>

                        </constraints>

                    </view>

                </viewController>

                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>

            </objects>

            <point key="canvasLocation" x="50.399999999999999" y="373.15270935960592"/>

        </scene>

    </scenes>

    <resources>

        <image name="LaunchScreenBackground.png" width="2208" height="1242"/>

    </resources>

</document>

图片大小2208 × 1242

* 添加LaunchScreen.storyboard和LaunchScreenBackground.png进Xcode工程, 并确认在`Build Phases` -> `Copy Bundle Resource`存在这两个文件。

工程配置中General -> App Icons and Launch Images中设置Launch Screen File为LaunchScreen。

* 删除Info.plist中无用的UILaunchImages字段

* 删除无用的旧的启动图片，Default.png, [email protected], [email protected]等