ios 如何像在 Facebook 应用程序中一样以编程方式打开设置？

Question

提问by Andrey Chernukha

I need to open Settings programmatically from within my app. I searched across SO but everywhere people say that it's impossible. But today I saw that it's implemented in Facebook app. There's a button on an UIAlertViewand when you click it you open the Settings. So indeed this is possible to open Settings, I have witnessed this myself. But how to do that? Does anyone know how Facebook does that?

我需要从我的应用程序中以编程方式打开设置。我搜索了 SO，但到处都有人说这是不可能的。但是今天我看到它已在 Facebook 应用程序中实现。上有一个按钮UIAlertView，当您单击它时，您会打开“设置”。所以确实可以打开设置，我亲眼目睹了这一点。但是怎么做呢？有谁知道 Facebook 是如何做到的？

Answer 1

采纳答案by rckoenes

You can't, there is no API call to do this.

你不能，没有 API 调用可以做到这一点。

Only system dialogs, dialogs from Apple Frameworks, can open the settings app. In iOS 5 there was a app url scheme to open the system dialog but Apple removed it later.

只有系统对话框，来自 Apple Frameworks 的对话框，才能打开设置应用程序。在 iOS 5 中，有一个应用程序 url 方案可以打开系统对话框，但 Apple 稍后将其删除。

With the coming of iOS 8 you can open the settings dialog on your apps page.

随着 iOS 8 的到来，您可以在应用程序页面上打开设置对话框。

if (&UIApplicationOpenSettingsURLString != NULL) {
   NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
    [[UIApplication sharedApplication] openURL:url];
}
else {
  // Present some dialog telling the user to open the settings app.
}

Answer 2

回答by Vito Ziv

On iOS 8 you can open Settings programmatically!

在 iOS 8 上，您可以通过编程方式打开设置！

Here is the code:

这是代码：

- (void)openSettings
{
    BOOL canOpenSettings = (&UIApplicationOpenSettingsURLString != NULL);
    if (canOpenSettings) {
        NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
        [[UIApplication sharedApplication] openURL:url];
    }
}

If your app has it's own settings bundle, the settings will be opened showing your app's settings. If your app does not have a setting bundle, the main settings page will be shown.

如果您的应用程序有自己的设置包，则会打开设置并显示您的应用程序设置。如果您的应用程序没有设置包，则会显示主设置页面。

Answer 3

回答by Stalin Pusparaj

On iOS 8 you can open Settings programmatically!

在 iOS 8 上，您可以通过编程方式打开设置！

Here is the list of currently known URLs in the Settings app:

以下是“设置”应用中当前已知的 URL 列表：

- (void) openSettings
{
if (&UIApplicationOpenSettingsURLString != nil)
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
else
    NSLog(@"UIApplicationOpenSettingsURLString is not available in current iOS version");
}

prefs:root=General&path=About
prefs:root=General&path=ACCESSIBILITY
prefs:root=AIRPLANE_MODE
prefs:root=General&path=AUTOLOCK
prefs:root=General&path=USAGE/CELLULAR_USAGE
prefs:root=Brightness
prefs:root=General&path=Bluetooth
prefs:root=General&path=DATE_AND_TIME
prefs:root=FACETIME
prefs:root=General
prefs:root=General&path=Keyboard
prefs:root=CASTLE
prefs:root=CASTLE&path=STORAGE_AND_BACKUP
prefs:root=General&path=INTERNATIONAL
prefs:root=LOCATION_SERVICES
prefs:root=ACCOUNT_SETTINGS
prefs:root=MUSIC
prefs:root=MUSIC&path=EQ
prefs:root=MUSIC&path=VolumeLimit
prefs:root=General&path=Network
prefs:root=NIKE_PLUS_IPOD
prefs:root=NOTES
prefs:root=NOTIFICATIONS_ID
prefs:root=Phone
prefs:root=Photos
prefs:root=General&path=ManagedConfigurationList
prefs:root=General&path=Reset
prefs:root=Sounds&path=Ringtone
prefs:root=Safari
prefs:root=General&path=Assistant
prefs:root=Sounds
prefs:root=General&path=SOFTWARE_UPDATE_LINK
prefs:root=STORE
prefs:root=TWITTER
prefs:root=General&path=USAGE
prefs:root=VIDEO
prefs:root=General&path=Network/VPN
prefs:root=Wallpaper
prefs:root=WIFI
prefs:root=INTERNET_TETHERING

prefs:root=General&path=关于
prefs:root=General&path=ACCESSIBILITY
首选项：root=AIRPLANE_MODE
prefs:root=General&path=AUTOLOCK
prefs:root=General&path=USAGE/CELLULAR_USAGE
首选项：根=亮度
prefs:root=General&path=蓝牙
首选项：root=General&path=DATE_AND_TIME
首选项：root=FACETIME
首选项：root=一般
prefs:root=General&path=Keyboard
首选项：root = CASTLE
首选项：root=CASTLE&path=STORAGE_AND_BACKUP
prefs:root=General&path=INTERNATIONAL
首选项：root=LOCATION_SERVICES
首选项：root = ACCOUNT_SETTINGS
首选项：root=音乐
首选项：root=音乐&路径=EQ
prefs:root=MUSIC&path=VolumeLimit
prefs:root=General&path=Network
首选项：root=NIKE_PLUS_IPOD
首选项：root=注意
首选项：root=NOTIFICATIONS_ID
首选项：root=电话
首选项：root=照片
prefs:root=General&path=ManagedConfigurationList
prefs:root=General&path=Reset
prefs:root=声音&路径=铃声
首选项：root = Safari
prefs:root=General&path=Assistant
prefs:root=声音
prefs:root=General&path=SOFTWARE_UPDATE_LINK
首选项：root = STORE
首选项：root=推特
prefs:root=General&path=USAGE
首选项：根=视频
prefs:root=General&path=网络/VPN
首选项：root=壁纸
首选项：root=WIFI
首选项：root=INTERNET_TETHERING

Answer 4

回答by Iraklis Moutidis

Vito Ziv's answer in Swift.

Vito Ziv 在 Swift 中的回答。

func openSettings() {
    UIApplication.shared.open(URL(string: UIApplicationOpenSettingsURLString)!, completionHandler: nil)

}

Answer 5

回答by Richard Venable

The alert in the Facebook app that this question refers to is a standard alert which iOS displays itselfwhen you set UIRequiresPersistentWiFito YES in your Info.plist files and the user launches your app without a network connection.

此问题所指的 Facebook 应用程序中的警报是一个标准警报，当您在 Info.plist 文件中将UIRequiresPersistentWiFi设置为 YES 并且用户在没有网络连接的情况下启动您的应用程序时，iOS 会自行显示该警报。

To summarize the discussion here:

总结一下这里的讨论：

There is no URLyou can use to get to the root levelof the Settings app.
You cansend the user to your app's sectionof the Settings app using UIApplicationOpenSettingsURLStringin iOS 8.
Your app can display the same alert as Facebook, which does open the root level of the Settings app, by setting UIRequiresPersistentWiFi to YES.

没有可用于访问“设置”应用程序根级别的URL。
您可以在 iOS 8 中使用UIApplicationOpenSettingsURLString将用户发送到设置应用程序的应用程序部分。
通过将 UIRequiresPersistentWiFi 设置为 YES，您的应用程序可以显示与 Facebook 相同的警报，它会打开设置应用程序的根级别。

Answer 6

回答by AechoLiu

A memo about prefs:root=and Prefs:root.

Yes, our App was REJECTED by Appledue to prefs:root=and App-Prefs:rootURL scheme today (2018-06-29). They are private API.

关于prefs:root=和的备忘录Prefs:root。

是的，我们的应用程序是由苹果拒绝因prefs:root=和App-Prefs:rootURL方案今天(2018-06-29)。它们是私有 API。

For Swift 4,

对于 Swift 4，

Only UIApplication.openSettingsURLStringis public API to open Settings.

只有UIApplication.openSettingsURLString是用于打开设置的公共 API。

Answer 7

回答by Joannes

 if (&UIApplicationOpenSettingsURLString != NULL)

in iOS 8+ is always TRUE. So you can edit like this

在 iOS 8+ 中总是正确的。所以你可以像这样编辑

NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];

if ([[UIApplication sharedApplication] canOpenURL:url]) {
    [[UIApplication sharedApplication] openURL:url options:@{} completionHandler:nil];
}

(with new openURL for iOS 10)

（带有适用于 iOS 10 的新 openURL）

Answer 8

回答by user1064264

If you want open application settings you need write method with UIApplicationOpenSettingsURLString.

如果您想打开应用程序设置，您需要使用 UIApplicationOpenSettingsURLString 编写方法。

fileprivate func openSettings() {
  UIApplication.shared.open(URL(string: UIApplicationOpenSettingsURLString)!)      
}

If you need will open one of many settings, you need use this function

如果您需要将打开许多设置之一，则需要使用此功能

fileprivate func openSettings() {
  UIApplication.shared.open(URL(string:"App-Prefs:root=General")!)
}

Answer 9

回答by Aamir

To open settings of our own application in iOS 8 and later, use following code.

要在中打开我们自己的应用程序的设置iOS 8 and later，请使用以下代码。

- (void) openSettings
{
    if(&UIApplicationOpenSettingsURLString != nil)
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
    else
        NSLog(@"UIApplicationOpenSettingsURLString is not available in current iOS version");
}

For reference and detailed description please follow

如需参考和详细说明，请遵循

Opening the Settings app programmatically in iOS 8

在 iOS 8 中以编程方式打开设置应用程序

Answer 10

回答by IvanovDeveloper

 if (&UIApplicationOpenSettingsURLString != NULL) {
            UIAlertView_Blocks *alertView = [[UIAlertView_Blocks alloc] initWithTitle:NSLocalizedString(@"Camera Access Denied", nil)
                                                                              message:NSLocalizedString(@"You must allow camera access in Settings", nil)
                                                                             delegate:nil
                                                                    cancelButtonTitle:NSLocalizedString(@"Cancel", nil)
                                                                    otherButtonTitles:NSLocalizedString(@"Open Settings", nil), nil];
            [alertView showWithDissmissBlock:^(NSInteger buttonIndex) {
                if (alertView.cancelButtonIndex != buttonIndex) {
                    NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
                    [[UIApplication sharedApplication] openURL:url];
                }
            }];
        }
        else {
            UIAlertView_Blocks *alertView = [[UIAlertView_Blocks alloc] initWithTitle:NSLocalizedString(@"Camera Access Denied", nil)
                                                                              message:NSLocalizedString(@"You must allow camera access in Settings > Privacy > Camera", nil)
                                                                             delegate:nil
                                                                    cancelButtonTitle:NSLocalizedString(@"OK", nil)
                                                                    otherButtonTitles:nil, nil];
            [alertView showWithDissmissBlock:^(NSInteger buttonIndex) {
            }];
        }

ios 如何像在 Facebook 应用程序中一样以编程方式打开设置？

提问by Andrey Chernukha

采纳答案by rckoenes

回答by Vito Ziv

回答by Stalin Pusparaj

回答by Iraklis Moutidis

回答by Richard Venable

回答by AechoLiu

回答by Joannes

回答by user1064264

回答by Aamir

回答by IvanovDeveloper

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ios 如何像在 Facebook 应用程序中一样以编程方式打开设置？

提问by Andrey Chernukha

采纳答案by rckoenes

回答by Vito Ziv

回答by Stalin Pusparaj

回答by Iraklis Moutidis

回答by Richard Venable

回答by AechoLiu

回答by Joannes

回答by user1064264

回答by Aamir

回答by IvanovDeveloper

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