当前位置:编程学习 > wap >>

iOS之摇一摇

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];
 [[UIApplication sharedApplication]setApplicationSupportsShakeToEdit:YES];
[self becomeFirstResponder];
}
然后去实现那几个方法就可以了
- (void) motionBegan:(UIEventSubtype)motionwithEvent:(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) {
        //somethinghappens
    }
}

 

 

补充:移动开发 , IOS ,
CopyRight © 2022 站长资源库 编程知识问答 zzzyk.com All Rights Reserved
部分文章来自网络,