IOS端的搖一搖功能

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

}


}
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