Question

我尝试了几种方法，但我找不到替换我的

的工作方法

[[UIAccelerometer sharedAccelerometer] setUpdateInterval:(1.0 / kAccelerometerFrequency)];
[[UIAccelerometer sharedAccelerometer] setDelegate:self];

最近我试图用

替换它

motionManager = [[CMMotionManager alloc] init];
motionManager.accelerometerUpdateInterval = (1.0 / kAccelerometerFrequency);

但它似乎不适合我的虚空

- (void)accelerometer:(UIAccelerometer *)accelerometer didAccelerate:(UIAcceleration *)acceleration {
    CGPoint pt = theCar.center;
    CGFloat accel = acceleration.x * kAccelerationSpeed;

float halfCarWidth = theCar.frame.size.width / 2;
    if(pt.x - halfCarWidth + accel > 0 && pt.x + halfCarWidth + accel < 320) {
        pt.x += accel;
    }

    [theCar setCenter:pt];
}

那么我该如何替换sharedAccelerometer，因为它在iOS 5中被折旧

Answer 1

动作管理器没有委托消息。使用计时器（NSTimer）并定期轮询运动管理器的值。

self.motman = [CMMotionManager new];
if (!self.motman.accelerometerAvailable) {
    // report error or whatever
    return;
}
self.motman.accelerometerUpdateInterval = 1.0 / 30.0;
[self.motman startAccelerometerUpdates];
self.timer =
    [NSTimer
        scheduledTimerWithTimeInterval:self.motman.accelerometerUpdateInterval
        target:self selector:@selector(pollAccel:) userInfo:nil repeats:YES];

现在重复调用pollAccel:。拉出加速度计信息：

CMAccelerometerData* dat = self.motman.accelerometerData;
CMAcceleration acc = dat.acceleration;

将sharedAccelerometer替换为motionManager iOS

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