微信的摇一摇是怎么实现的~发现原来 ios本身就支持

在 UIResponder中存在这么一套方法

- (void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event __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];

// Do any additional setup after loading the view, typically from a nib.

[[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

}

}

至于界面我就不写了~