ios - 用户不允许权限时的 CMMotionActivityManager 回调

Question

我正在使用 Privacy Prompts 项目中的以下代码来获取 Motion Permission。

- (void)requestMotionAccessData {
    self.cmManager = [[CMMotionActivityManager alloc] init];
    self.motionActivityQueue = [[NSOperationQueue alloc] init];
    [self.cmManager startActivityUpdatesToQueue:self.motionActivityQueue withHandler:^(CMMotionActivity *activity) {
        /* 
         * Do something with the activity reported
         */

        NSLog(@"requestMotionAccessData");
        [self alertViewWithDataClass:Motion status:NSLocalizedString(@"ALLOWED", @"")];
        [self.cmManager stopActivityUpdates];
    }];
}

如果用户不允许 Action 权限怎么办。我会得到一些回调吗？ 如果没有，是否有其他方法可以获取此信息。当用户选择 Allow 或 Don't Allow

时，我想要回调

Answer 1

你可以...挑选错误:

[stepCounter queryStepCountStartingFrom:[NSDate date]
                                     to:[NSDate date]
                                toQueue:[NSOperationQueue mainQueue]
                            withHandler:^(NSInteger numberOfSteps, NSError *error) {
                                if (error != nil && error.code == CMErrorMotionActivityNotAuthorized) {
                                    // The app isn't authorized to use motion activity support.
}

来自这里:iOS - is Motion Activity Enabled in Settings > Privacy > Motion Activity