iOS13 App black screen, self.window not working

Question

After my test iPhone device upgrade to version 13.3, my self.window is not working anymore. I have tried as follows:

select TARGETS -> General -> Deployment Info, clean "Main Interface".
Deleted "Storyboard name -> main" in info.plist, deleted "Main storyboard file base name" in info.plist, deleted anything related to main.storyboard in info.plist.
Add code in didFinishLaunchingWithOptions :

    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
    self.window.backgroundColor = KWhiteColor;
    [self.window makeKeyAndVisible];

But still get black screen when launch App. Is there anybody who can tell me why and how to make self.window work?

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.

    //初始化window
//    [self initWindow];
    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
    self.window.backgroundColor = KWhiteColor;
    [self.window makeKeyAndVisible];

    //初始化服务
    [self initService];

    //初始化用户系统
//    [self initUserManager];
    CSKLoginViewController *vc = [CSKLoginViewController new];
    //        vc.showBack = NO;
//    RootNavigationController *loginNavi = [[RootNavigationController alloc] initWithRootViewController:vc];
    vc.view.backgroundColor = UIColor.redColor;
    self.window.rootViewController = vc;

    return YES;
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>CFBundleDisplayName</key>
    <string>xxx</string>
    <key>CFBundleDevelopmentRegion</key>
    <string>zh_CN</string>
    <key>CFBundleExecutable</key>
    <string>$(EXECUTABLE_NAME)</string>
    <key>CFBundleIdentifier</key>
    <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
    <key>CFBundleInfoDictionaryVersion</key>
    <string>6.0</string>
    <key>CFBundleName</key>
    <string>$(PRODUCT_NAME)</string>
    <key>CFBundlePackageType</key>
    <string>$(PRODUCT_BUNDLE_PACKAGE_TYPE)</string>
    <key>CFBundleShortVersionString</key>
    <string>1.0</string>
    <key>CFBundleVersion</key>
    <string>1</string>
    <key>LSRequiresIPhoneOS</key>
    <true/>
    <key>NSAppTransportSecurity</key>
    <dict>
        <key>NSAllowsArbitraryLoads</key>
        <true/>
    </dict>
    <key>NSCameraUsageDescription</key>
    <string></string>
    <key>NSContactsUsageDescription</key>
    <string>访问您的通讯录新增客户。</string>
    <key>NSMicrophoneUsageDescription</key>
    <string></string>
    <key>NSPhotoLibraryUsageDescription</key>
    <string></string>
    <key>UIApplicationSceneManifest</key>
    <dict>
        <key>UIApplicationSupportsMultipleScenes</key>
        <false/>
        <key>UISceneConfigurations</key>
        <dict>
            <key>UIWindowSceneSessionRoleApplication</key>
            <array>
                <dict>
                    <key>UISceneConfigurationName</key>
                    <string>Default Configuration</string>
                    <key>UISceneDelegateClassName</key>
                    <string>SceneDelegate</string>
                </dict>
            </array>
        </dict>
    </dict>
    <key>UILaunchStoryboardName</key>
    <string>LaunchScreen</string>
    <key>UIRequiredDeviceCapabilities</key>
    <array>
        <string>armv7</string>
    </array>
    <key>UISupportedInterfaceOrientations</key>
    <array>
        <string>UIInterfaceOrientationPortrait</string>
        <string>UIInterfaceOrientationLandscapeLeft</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
    </array>
    <key>UISupportedInterfaceOrientations~ipad</key>
    <array>
        <string>UIInterfaceOrientationPortrait</string>
        <string>UIInterfaceOrientationPortraitUpsideDown</string>
        <string>UIInterfaceOrientationLandscapeLeft</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
    </array>
</dict>
</plist>

are you using the XIB or would you want to create your VC progrmatically — Anbu.Karthik, Jan 02 '20 at 09:18
move this line to `[self.window makeKeyAndVisible]; return YES;` and try ` — Anbu.Karthik, Jan 02 '20 at 09:37

score 0 · Answer 1 · answered Jan 02 '20 at 09:45

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];

    ViewController *vc = [[ViewController alloc] init];
    self.window.rootViewController = vc;

    return YES;
}

info.plist:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>CFBundleDevelopmentRegion</key>
    <string>en</string>
    <key>CFBundleExecutable</key>
    <string>$(EXECUTABLE_NAME)</string>
    <key>CFBundleIdentifier</key>
    <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
    <key>CFBundleInfoDictionaryVersion</key>
    <string>6.0</string>
    <key>CFBundleName</key>
    <string>$(PRODUCT_NAME)</string>
    <key>CFBundlePackageType</key>
    <string>APPL</string>
    <key>CFBundleShortVersionString</key>
    <string>1.0</string>
    <key>CFBundleVersion</key>
    <string>1</string>
    <key>LSRequiresIPhoneOS</key>
    <true/>
    <key>UILaunchStoryboardName</key>
    <string>LaunchScreen</string>
    <key>UIRequiredDeviceCapabilities</key>
    <array>
        <string>armv7</string>
    </array>
    <key>UISupportedInterfaceOrientations</key>
    <array>
        <string>UIInterfaceOrientationPortrait</string>
        <string>UIInterfaceOrientationLandscapeLeft</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
    </array>
    <key>UISupportedInterfaceOrientations~ipad</key>
    <array>
        <string>UIInterfaceOrientationPortrait</string>
        <string>UIInterfaceOrientationPortraitUpsideDown</string>
        <string>UIInterfaceOrientationLandscapeLeft</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
    </array>
</dict>
</plist>

It's ok on my side.

I created a new project and made a test like yours, but still black screen. I don't know why. — Emma, Jan 06 '20 at 05:49
if u use Xcode11 to create new project, you should set window in scene delegate. — Yvan, Jan 09 '20 at 02:08

score 0 · Answer 2 · answered Jan 06 '20 at 06:29

0

Should write code in SceneDelegate. https://medium.com/better-programming/creating-apps-without-storyboards-in-ios-13-fc9550bb9c12

answered Jan 06 '20 at 06:29

Emma

101
1
11

score 0 · Answer 3 · answered Jan 06 '20 at 06:40

0

The problem is that your code is in the wrong place. The window no longer belongs to the app delegate; it belongs to the scene delegate.

answered Jan 06 '20 at 06:40

matt

515,959
87
875
1,141

I have given some sample scene delegate code for creating the root view controller without a storyboard here: https://stackoverflow.com/a/58405507/341994 – matt Jan 06 '20 at 06:41

iOS13 App black screen, self.window not working

3 Answers3

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