目标C:检测到震动 [英] Objective C: Detecting a shake
本文介绍了目标C:检测到震动的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在像这样使用摇动api:
I'm using the shake api like this:
- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
if (event.subtype == UIEventSubtypeMotionShake)
{
[img stopAnimating];
}
}
如何检测到抖动已停止?
How do I detect that the shaking has stopped?
推荐答案
您处于正确的轨道,但是,还需要添加更多东西来检测晃动:
You are on the right track, however, there are still more things you need to add to detect shaking:
您可以通过在 motionBegan
或 motionEnded
方法,然后在模拟器中按 CONTROL + COMMAND + Z
You can test this by adding an NSLog
to the motionBegan
or motionEnded
methods, and in the Simulator, press CONTROL + COMMAND + Z
#pragma mark - Shake Functions
-(BOOL)canBecomeFirstResponder {
return YES;
}
-(void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:NO];
[self becomeFirstResponder];
}
-(void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:NO];
}
-(void)viewDidDisappear:(BOOL)animated {
[self resignFirstResponder];
[super viewDidDisappear:NO];
}
-(void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
if (motion == UIEventSubtypeMotionShake )
{
// shaking has began.
}
}
-(void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
if (motion == UIEventSubtypeMotionShake )
{
// shaking has ended
}
}
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