ios - 用于快捷方式崩溃的 3D Touch

Question

我的应用程序是一个单 View NavigationController 作为 Root View Controller 样式的应用程序。其中，我有一些使用 3D Touch 的不同快捷方式项目。我将它们全部设置在 Info.plist 中(我之前使用选项卡栏应用程序完成了此操作，并且工作正常)，但每次按下快捷操作时它都会崩溃。这是我在 Obj-C 中的 AppDelegate 中使用的代码。

- (void)application:(UIApplication *)application performActionForShortcutItem:(UIApplicationShortcutItem *)shortcutItem completionHandler:(void (^)(BOOL))completionHandler {
    UINavigationController *nav = (UINavigationController *) self.theMainView.view;

    NSLog(@"%@", shortcutItem.type);
    if ([shortcutItem.type isEqualToString:@"com.316apps.Fritch.inviteFriends"]) {
        ImagePicker *vimeo= [[ImagePicker alloc] init];
        [nav pushViewController:vimeo animated:YES];

    }
    if ([shortcutItem.type isEqualToString:@"com.316apps.Fritch.viewAlerts"]) {

        NewsViewController *dvController8 = [[NewsViewController alloc] initWithNibName:@"NewsViewController" bundle:[NSBundle mainBundle]];
        [nav pushViewController:dvController8 animated:YES];

    }
    if ([shortcutItem.type isEqualToString:@"com.316apps.Fritch.viewDirectory"]) {

        DirectoryViewController *dvController8 = [[DirectoryViewController alloc] init];
        [nav pushViewController:dvController8 animated:YES];


    }


}

崩溃日志:

com.316apps.Fritch.viewDirectory
2017-01-19 22:44:23.305906 Fritch[3956:925348] -[UILayoutContainerView pushViewController:animated:]: unrecognized selector sent to instance 0x101837530
2017-01-19 22:44:23.306768 Fritch[3956:925348] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UILayoutContainerView pushViewController:animated:]: unrecognized selector sent to instance

Answer 1

UINavigationController *nav = (UINavigationController *) self.theMainView.view;

崩溃的原因是您获取的是 view，而不是 ViewController。所以 self.theMainView.view 不能转换为 UINavigationController。如果您的 self.theMainView 是正确的，请使用以下方法修复崩溃:

UINavigationController *nav = (UINavigationController *) self.theMainView;