当用户不允许权限时，CMMotionActivityManager回调

Question

我使用以下代码从隐私提示项目获得运动许可。

- (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];
    }];
}

如果用户不允许动作权限怎么办?我有回调吗?如果没有，有没有其他方法可以得到这个。当用户选择Allow或Don't Allow

Answer 1

你只是可以…选择错误:

[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.
}

from here: iOS -在设置中启用动作活动>隐私比;运动活动