Question

我将以下代码添加到appDelegate.m

- (void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
}

- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
    if (motion == UIEventSubtypeMotionShake )
    {
        // User was shaking the device. Post a notification named "shake".
        [[NSNotificationCenter defaultCenter] postNotificationName:@"shake" object:self];
    }
}

- (void)motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event
{   
}

- (void)shakeSuccess
{
    // do something...
}

然后我补充说：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.
    // INIT THE BACKGROUND PATH STRING

    [self refreshFields];
    [self.window addSubview:navController.view];
    [self.window makeKeyAndVisible];
    ***[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(shakeSuccess) name:@"shake" object:nil];***

    return YES;
}

当我在iPhone上启动应用程序时，名为“shakeSuccess”的方法未调用。我应该怎么做才能在我的应用程序中实现此功能？任何想法？

Answer 1

这可能对你有帮助...
https://stackoverflow.com/a/2405692/796103

他说你应该将UIApplication的{{1}}设置为 applicationSupportsShakeToEdit。并覆盖VC中的3种方法：

YES

你的其余代码很好。（-(BOOL)canBecomeFirstResponder { return YES; } -(void)viewDidAppear:(BOOL)animated { [super viewDidAppear:animated]; [self becomeFirstResponder]; } - (void)viewWillDisappear:(BOOL)animated { [self resignFirstResponder]; [super viewWillDisappear:animated]; }）

Answer 2

你可以这样做......

...首先

在App的代表中设置applicationSupportsShakeToEdit属性：

- (void)applicationDidFinishLaunching:(UIApplication *)application {

    application.applicationSupportsShakeToEdit = YES;

    [window addSubview:viewController.view];
    [window makeKeyAndVisible];
}

...其次

在视图控制器中添加/覆盖canBecomeFirstResponder，viewDidAppear：和viewWillDisappear：方法：

-(BOOL)canBecomeFirstResponder {
    return YES;
}

-(void)viewDidAppear:(BOOL)animated {
   [super viewDidAppear:animated];
   [self becomeFirstResponder];
}

- (void)viewWillDisappear:(BOOL)animated {
    [self resignFirstResponder];
    [super viewWillDisappear:animated];
 }

...第三

将motionEnded方法添加到View Controller：

- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
   if (motion == UIEventSubtypeMotionShake)
   {
    // your code
   }
 }

如果第一个答案没有，这应该有效，而且只是快速输入未经测试：）

Answer 3

如果您希望能够在应用程序中检测到摇动，最好的方法是使用自定义类覆盖应用程序的类。

然后在自定义应用程序类中实现它

@implementation PSApplication

- (void)sendEvent:(UIEvent *)event
{
    if ( event.type == UIEventTypeMotion && event.subtype == UIEventSubtypeMotionShake ) {
        [[NSNotificationCenter defaultCenter] postNotificationName:@"shakeNotification" object:nil];
    }

    [super sendEvent:event];
}

@end

Answer 4

我扩展了UIApplication类并添加了对main的类引用： MyApplication.h

@interface MyApplication : UIApplication

@end

MyApplication.m

@implementation MyApplication

- (void) sendEvent:(UIEvent *)event
{
    if( event && (event.subtype==UIEventSubtypeMotionShake))
    {
        AppDelegate *objAppDelegate = (AppDelegate *)[UIApplication sharedApplication].delegate;

        [objAppDelegate doWhatEver];
        [super sendEvent:event];
    }
    else
    {
        [super sendEvent:event];
    }
}

@end

main.m的最后一步

int main(int argc, char *argv[])
{
return UIApplicationMain(argc, argv, NSStringFromClass([MyApplication class]), NSStringFromClass([AppDelegate class]));
}

这适用于所有情况。

iOS：如何检测摇动？

4 个答案: