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~