Ios 有没有办法得到震动的强度?
我正在做一个POC,看看我是否能找到震动的强度Ios 有没有办法得到震动的强度?,ios,swift,Ios,Swift,我正在做一个POC,看看我是否能找到震动的强度 class ViewController: UIViewController { override func motionBegan(motion: UIEventSubtype, withEvent event: UIEvent) { println("started shaking!") } override func motionEnded(motion: UIEventSubtype, withEv
class ViewController: UIViewController {
override func motionBegan(motion: UIEventSubtype, withEvent event: UIEvent) {
println("started shaking!")
}
override func motionEnded(motion: UIEventSubtype, withEvent event: UIEvent) {
println("ended shaking!")
}
}
我看不到任何东西能告诉我震动有多剧烈。在我的例子中,此抖动可能是持续几秒钟的事件。您可以使用框架读取加速计值的原始流。这是我在DIDCharated回调中输入的代码,其中包含一些类变量和常量:
UIAccelerationValue accelX, accelY, accelZ;
#define kAccelerometerFrequency 25 //Hz
#define kFilteringFactor 0.1
#define kMinShakeInterval 0.1
#define kShakeAccelerationThreshold 0.2
-(CMMotionManager*) motionManager{
if (_motionManager==nil) {
_motionManager=[[CMMotionManager alloc] init];
_motionManager.accelerometerUpdateInterval=1.0/25;
_motionManager.gyroUpdateInterval=1.0/25;
}
return _motionManager;
}
-(void) viewDidLoad{
[...]
[[self motionManager] startAccelerometerUpdatesToQueue:[NSOperationQueue currentQueue]
withHandler:^(CMAccelerometerData *accelerometerData, NSError *error) {
[self didAccelerate:accelerometerData.acceleration];
if(error){
NSLog(@"%@", error);
}
}];
[...]
}
- (void)didAccelerate:(CMAcceleration)acceleration{
UIAccelerationValue lenght, x, y, z;
accelX=acceleration.x*kFilteringFactor + accelX * (1.0 - kFilteringFactor);
accelY=acceleration.y*kFilteringFactor + accelY * (1.0 - kFilteringFactor);
accelZ=acceleration.z*kFilteringFactor + accelZ * (1.0 - kFilteringFactor);
x=acceleration.x - accelX;
y=acceleration.y - accelY;
z=acceleration.z - accelZ;
lenght=sqrt(x*x + y*y + z*z);
if (lenght>=kShakeAccelerationThreshold && (CFAbsoluteTimeGetCurrent()>lastTime + kMinShakeInterval)){
//execute shaking actions on main thread
}
}
您可以读取加速计输出。任何示例..或要共享的链接。任何示例或要共享的链接。在这种情况下,“lastTime”是什么。我忘记了:它是在对我的应用程序执行某些特定操作后在条件块中设置的:lastTime=CFAbsoluteTimeGetCurrent();这是一个CFTimeInterval lastTime;