update : ios 启动屏

ios/Runner/AppDelegate.swift

@@ -1,6 +1,19 @@
 import Flutter
 import UIKit
 
+/// Keeps the system LaunchScreen as the only splash. Flutter would otherwise
+/// instantiate that storyboard again and the icon appears a second time.
+final class RunnerFlutterViewController: FlutterViewController {
+  override func loadDefaultSplashScreenView() -> Bool {
+    false
+  }
+
+  override func viewDidLoad() {
+    super.viewDidLoad()
+    view.backgroundColor = .black
+  }
+}
+
 @main
 @objc class AppDelegate: FlutterAppDelegate, FlutterImplicitEngineDelegate {
   override func application(

ios/Runner/Base.lproj/LaunchScreen.storyboard

@@ -9,10 +9,6 @@
         <scene sceneID="EHf-IW-A2E">
             <objects>
                 <viewController id="01J-lp-oVM" sceneMemberID="viewController">
-                    <layoutGuides>
-                        <viewControllerLayoutGuide type="top" id="Ydg-fD-yQy"/>
-                        <viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
-                    </layoutGuides>
                     <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
@@ -21,8 +17,10 @@
                         </subviews>
                         <color key="backgroundColor" red="0" green="0" blue="0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                         <constraints>
-                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="top" secondItem="Ze5-6b-2t3" secondAttribute="top" id="top-launch"/>
-                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="bottom" secondItem="Ze5-6b-2t3" secondAttribute="bottom" id="bot-launch"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="leading" secondItem="Ze5-6b-2t3" secondAttribute="leading" id="lead-launch"/>
+                            <constraint firstItem="YRO-k0-Ey4" firstAttribute="trailing" secondItem="Ze5-6b-2t3" secondAttribute="trailing" id="trail-launch"/>
                         </constraints>
                     </view>
                 </viewController>

ios/Runner/Base.lproj/Main.storyboard

@@ -8,7 +8,7 @@
         <!--Flutter View Controller-->
         <scene sceneID="tne-QT-ifu">
             <objects>
-                <viewController id="BYZ-38-t0r" customClass="FlutterViewController" sceneMemberID="viewController">
+                <viewController id="BYZ-38-t0r" customClass="RunnerFlutterViewController" customModule="Runner" customModuleProvider="target" sceneMemberID="viewController">
                     <layoutGuides>
                         <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
                         <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
@@ -16,7 +16,7 @@
                     <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
                         <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                        <color key="backgroundColor" red="0" green="0" blue="0" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                     </view>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>