IOS端的搖一搖功能

//微信的搖一搖是怎么實現的~發現原來 ios本身就支持
//在 UIResponder中存在這么一套方法
 
- (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);
 
//這就是執行搖一搖的方法。那么怎么用這些方法呢？
 
//很簡單，你只需要讓這個Controller本身支持搖動
 
//同時讓他成為第一相應者：
 
- (void)viewDidLoad
 
{
 
    [superviewDidLoad];
 
// Do any additional setup after loading the view, typically from a nib.
 
    [[UIApplicationsharedApplication] setApplicationSupportsShakeToEdit:YES];
 
    [selfbecomeFirstResponder];
 
}
 
  
 
//然后去實現那幾個方法就可以了
 
- (void) motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event
 
{
 
    //檢測到搖動
 
}
 
  
 
- (void) motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event
 
{
 
    //搖動取消
 
}
 
  
 
- (void) motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event
 
{
 
    //搖動結束
 
    if (event.subtype == UIEventSubtypeMotionShake) {
 
        //something happens
 
    }
 
}