问题

I have to crate a sample app in which when I clicked a button that should open the native alarm clock so that user can use it for setting alarm?

回答1:

If the Clock app supported a URL scheme, like the Phone app’s tel:// or the Mail app’s mail://, you could open it with the standard [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"..."]] approach. Unfortunately, to my knowledge, it doesn’t, so all you can really do is prompt the user to open that app themselves to set up the alarm.

Alternatively, you can have your app set up a local notification to act as an alarm using UILocalNotification, which you can find plenty of information about by searching this site.

回答2:

For default app MobileClock.app exists several url scheme. If u have a look in system files and open content for MobileClock.app u will find in info.plist private url scheme:

clock-worldclock,
clock-alarm,
clock-stopwatch,
clock-timer,
clock-timer-running .

Which using them should be possible to run app externally but only from Today widgets. Also the same for the mobile notes app.

回答3:

Two steps required.

Add the URL to info.plist CFBundleURLSchemes

<array>
        <dict>
            <key>CFBundleTypeRole</key>
            <string>Editor</string>
            <key>CFBundleURLSchemes</key>
            <array>
                <string>clock-alarm</string>
                <string>clock-stopwatch</string>
            </array>
        </dict>
</array>

Call sharedApplication's openURL

[[UIApplication sharedApplication] 
  openURL:[NSURL URLWithString:@"clock-alarm:"]];
];

来源：https://stackoverflow.com/questions/8722683/how-i-can-open-native-alarm-clock-in-iphone-by-using-code

标签

iphone

alarm

How I can open native alarm clock in iphone by using code?