ios - 通知有效但没有声音

Question

我试图将此代码放在 AppDelegate.m 下以测试本地通知:

- (void)applicationDidEnterBackground:(UIApplication *)application
{    
    NSDate *alertTime = [[NSDate date]dateByAddingTimeInterval:5];
    UIApplication* thisApp = [UIApplication sharedApplication];
    UILocalNotification* notify = [[UILocalNotification alloc] init];
    if (notify){
        notify.fireDate = alertTime;
        notify.timeZone = [NSTimeZone defaultTimeZone];
        notify.repeatInterval = 0;
        notify.alertBody = @"This is notification";
        [thisApp scheduleLocalNotification:notify];
    }
}

但我没有像其他应用程序一样听到任何声音。我们应该提供自己的声音吗？我们不能在通知中使用 Apple 原生声音吗？

以及如何设置通知的“标题文本”？因为我看到的只是 notify.alertBody = @"This is notification";，它不会在标题上产生任何内容，而是将“Notification”作为标题。

谢谢你...

Answer 1

声音

您需要通过指定您自己的声音文件名或默认值来指定您想要的声音。 From the documentation :

For this property, specify the filename (including extension) of a sound resource in the application’s main bundle or UILocalNotificationDefaultSoundName to request the default system sound. When the system displays an alert for a local notification or badges an application icon, it plays this sound. The default value is nil (no sound). Sounds that last longer than 30 seconds are not supported. If you specify a file with a sound that plays over 30 seconds, the default sound is played instead.

标题

您不能修改通知的标题。它始终是您的应用名称，以便用户确切知道通知的来源。