c# - 如何在 ios 中以编程方式打开设置
<p><p>我正在搜索 <a href="https://stackoverflow.com/questions/23824054/how-to-open-settings-programmatically-like-in-facebook-app" rel="noreferrer noopener nofollow">How to open settings programmatically</a> 的 Xamarin 实现</p>
<p> <a href="https://stackoverflow.com/users/2097806/vito-ziv" rel="noreferrer noopener nofollow">Vito-ziv</a>为客观 C 回答了这个问题 - 在 Xamarin Studio 中的 C# for iOS 中执行此操作的正确方法是什么？</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>对于当前设备，这只能在 ios8 中实现(在撰写本文时 ios9 不可用)(显然，在 ios5 之前它曾经是可能的 - 参见 <a href="http://www.themethodology.net/2015/01/open-settings-app-programmatically-from.html" rel="noreferrer noopener nofollow">this blog post</a> 中的 <a href="https://plus.google.com/111410974594756564472" rel="noreferrer noopener nofollow">Adrian Stevens at Xamarin</a> - 向他大声喊出这个答案的灵感)</p>
<p>要在 ios8 中执行此操作，我是这样做的:</p>
<pre><code>var settingsString = UIKit.UIApplication.OpenSettingsUrlString;
var url = new NSUrl (settingsString);
UIApplication.SharedApplication.OpenUrl (url);
</code></pre>
<p>上面的代码是通过 UIAlertView 点击中的委托(delegate)类从点击事件中调用的。</p>
<p>因为我也支持 ios7，所以为了处理 ios7 设备，我这样做了，在决定是否呈现 ViewController 时调用 HandleLocationAuthorisation 方法 - ios8 及更高版本的用户可以选择直接进入设置，而ios7的用户必须手动去那里。</p>
<p>下面的这个例子是检查位置服务，但是可以很容易地改变一些小改动来检查其他类型的设置。</p>
<pre><code>public bool HandleLocationAuthorisation ()
{
if (CLLocationManager.Status == CLAuthorizationStatus.AuthorizedAlways) {
return true;
} else {
UIAlertView uiAlert;
//iOS 8 and above can redirect to settings from within the app
if (UIDevice.CurrentDevice.CheckSystemVersion(8,0)) {
uiAlert = new UIAlertView
("Location Services Required",
"",
null,
"Return To App","Open Settings");
uiAlert.Delegate = new OpenSettingsFromUiAlertViewDelegate();
uiAlert.Message = "Authorisation to use your location is required to use this feature of the app.";
//ios7 and below has to go there manually
} else {
uiAlert = new UIAlertView
("Location Services Required",
"Authorisation to use your location is required to use this feature of the app. To use this feature please go to the settings app and enable location services",
null,
"Ok");
}
uiAlert.Show ();
return false;
}
}
</code></pre>
<p>为了完整起见，这里是上面引用的事件委托(delegate)的代码:</p>
<pre><code>public class OpenSettingsFromUiAlertViewDelegate : UIAlertViewDelegate {
public override void Clicked (UIAlertView alertview, nint buttonIndex)
{
if (buttonIndex == 1) {
var settingsString = UIKit.UIApplication.OpenSettingsUrlString;
var url = new NSUrl (settingsString);
UIApplication.SharedApplication.OpenUrl (url);
}
}
}
</code></pre></p>
<p style="font-size: 20px;">关于c# - 如何在 ios 中以编程方式打开设置，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/30439829/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/30439829/
</a>
</p>
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