如何在与 iPad 和所有 iPhone 屏幕兼容的 React Native 中为 IOS 创建带有全屏图像的 LaunchScreen

Question

我需要 我的启动画面上的全屏图像 用于 IOS 使用 React Native 构建的应用程序。我参考了不同的 post，但他们中的大多数都解释了中间带有徽标的垃圾屏幕，其中 none 对适合所有设备分辨率（包括 [=38=）的全屏启动图像给出了正确的解释].

我已经创建了一个 LaunchScreen.xib 文件，其中包含下面给出的视图和图像视图，但它在 iPad 中中断，但它在一定程度上适合 iPhone（虽然它有一些黑色阴影高分辨率 iphone 也）

<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="15400" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES">
    <device id="retina5_5" orientation="portrait" appearance="light"/>
    <dependencies>
        <deployment identifier="iOS"/>
        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="15404"/>
        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
    </dependencies>
    <objects>
        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
        <view contentMode="scaleAspectFit" id="iN0-l3-epB">
            <rect key="frame" x="0.0" y="0.0" width="414" height="716"/>
            <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
            <subviews>
                <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleAspectFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="Default" id="IGQ-OV-TUd">
                    <rect key="frame" x="0.0" y="-10" width="414" height="736"/>
                    <autoresizingMask key="autoresizingMask" flexibleMinX="YES" widthSizable="YES" flexibleMaxX="YES" flexibleMinY="YES" flexibleMaxY="YES"/>
                </imageView>
            </subviews>
            <color key="backgroundColor" red="0.30980392156862746" green="0.42745098039215684" blue="0.47843137254901957" alpha="1" colorSpace="calibratedRGB"/>
            <nil key="simulatedStatusBarMetrics"/>
            <modalPageSheetSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
            <point key="canvasLocation" x="-20.289855072463769" y="107.60869565217392"/>
        </view>
    </objects>
    <resources>
        <image name="Default" width="682.66668701171875" height="910.66668701171875"/>
    </resources>
</document>

我在下面附上我的 View 和 ImageView 的设置截图

我已经为三个不同的尺度创建了 3 个虚拟图像，Content.json 如下所示

{
  "images" : [
    {
      "idiom" : "universal",
      "filename" : "Dummy.png",
      "scale" : "1x"
    },
    {
      "idiom" : "universal",
      "filename" : "Dummy@2x.png",
      "scale" : "2x"
    },
    {
      "idiom" : "universal",
      "filename" : "Dummy@3x.png",
      "scale" : "3x"
    }
  ],
  "info" : {
    "version" : 1,
    "author" : "xcode"
  }
}

以上所有更改都没有为我的要求提供适当的解决方案。我想知道是否需要为所有可能的设备创建全屏图像并将它们包含在 Content.json 文件中。但是我应该在设置中给出什么宽度和高度(Scrrenshots)

有人请抱抱我为我的要求提供正确的解决方案。

Answer 1

你能试试这个工具吗 generator-rn-toolbox

Answer 2

您只需要将约束从上、左、右、下设置为0即可。这将自动适应所有设备。

这是我的 LaunchScreen.xib

的代码

<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="15400" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES">
    <device id="retina6_1" orientation="portrait" appearance="light"/>
    <dependencies>
        <deployment identifier="iOS"/>
        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="15404"/>
        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
    </dependencies>
    <objects>
        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
        <view contentMode="scaleToFill" id="iN0-l3-epB">
            <rect key="frame" x="0.0" y="0.0" width="376" height="480"/>
            <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
            <subviews>
                <imageView clipsSubviews="YES" userInteractionEnabled="NO" contentMode="scaleAspectFill" horizontalHuggingPriority="251" verticalHuggingPriority="251" image="Ios" translatesAutoresizingMaskIntoConstraints="NO" id="mAG-fl-dgj">
                    <rect key="frame" x="0.0" y="0.0" width="376.00000000000023" height="480"/>
                </imageView>
            </subviews>
            <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
            <constraints>
                <constraint firstItem="mAG-fl-dgj" firstAttribute="leading" secondItem="iN0-l3-epB" secondAttribute="leading" id="4Qq-Mv-2hX"/>
                <constraint firstItem="mAG-fl-dgj" firstAttribute="top" secondItem="iN0-l3-epB" secondAttribute="top" id="5G1-V8-uL4"/>
                <constraint firstAttribute="trailing" secondItem="mAG-fl-dgj" secondAttribute="trailing" id="61P-7a-W4I"/>
                <constraint firstAttribute="bottom" secondItem="mAG-fl-dgj" secondAttribute="bottom" id="b3b-rs-eay"/>
            </constraints>
            <nil key="simulatedStatusBarMetrics"/>
            <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
            <point key="canvasLocation" x="472.46376811594206" y="454.6875"/>
        </view>
    </objects>
    <resources>
        <image name="Ios" width="788" height="1400"/>
    </resources>
</document>

If you want to add a custom Splash Screen you can create manually in your react application by creating a separate component.

如何在与 iPad 和所有 iPhone 屏幕兼容的 React Native 中为 IOS 创建带有全屏图像的 LaunchScreen

How to create LaunchScreen with a fullscreen Image for IOS in React Native which is screen compatible with iPad and all iPhones

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