微信的摇一摇是怎么实现的,在 UIResponder中存在这么一套方法
- (void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)even __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_3_0);
- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_3_0);
- (void)motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_3_0);
//这就是执行摇一摇的方法。那么怎么用这些方法呢？
//很简单，你只需要让这个Controller本身支持摇动
//同时让他成为第一相应者：
- (void)viewDidLoad
{
[superviewDidLoad];
[[UIApplicationsharedApplication] setApplicationSupportsShakeToEdit:YES];
[selfbecomeFirstResponder];
}
//然后去实现那几个方法就可以了
- (void) motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
//检测到摇动
}
- (void) motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
//摇动取消
}
- (void) motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
//摇动结束
if (event.subtype == UIEventSubtypeMotionShake) {
//something happens
}
}
swift中对应的代码
application.applicationSupportsShakeToEdit = true
self.becomeFirstResponder()
对应的方法
override func motionBegan(motion: UIEventSubtype, withEvent event: UIEvent?) {
super.motionBegan(motion, withEvent: event)
UIApplication.sharedApplication().keyWindow?.rootViewController = UIStoryboard(name: "Main", bundle: nil).instantiateInitialViewController()
}
override func motionCancelled(motion: UIEventSubtype, withEvent event: UIEvent?) {
super.motionCancelled(motion, withEvent: event)
}
override func motionEnded(motion: UIEventSubtype, withEvent event: UIEvent?) {
super.motionEnded(motion, withEvent: event)
}
