搖一搖和手勢

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1.設定搖動，或要使他變要第一響應者

   [[UIApplication sharedApplication]setApplicationSupportsShakeToEdit:YES];

    [self canBecomeFirstResponder];

 2.實現下面幾個函數來控制搖一搖的觸發的動作

- (BOOL)canBecomeFirstResponder

{

    return YES;// default is NO

}

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

{

    NSLog(@"開始搖動手機");

}

- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event

{

    NSLog(@"stop");

    UIAlertView *yaoyiyao = [[UIAlertView alloc]initWithTitle:@"溫馨提示：" message:@"麻辣疙疤籽" delegate:self cancelButtonTitle:@"cancel"otherButtonTitles:@"back",nil ];

    [yaoyiyao show];

}

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

{

    NSLog(@"取消");

}

3.提示框

UIAlertView *yaoyiyao = [[UIAlertView alloc]initWithTitle:@"溫馨提示：" message:@"您有新訊息" delegate:self cancelButtonTitle:@"cancel"otherButtonTitles:@"back",nil ];

@protocol UIAlertViewDelegate <NSObject> 這裡的協議可實現提示框裡的按鈕的功能

4.手勢的添加

 UITapGestureRecognizer *tap=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(back:)];  //設定手勢

    [self.view addGestureRecognizer:tap];//將手勢添加到視圖上

 5.webview上設定返回按鈕的做法

    if (webView.canGoBack==YES) {

        [webView goBack];

    }

    else

        [self.navigationController popViewControllerAnimated:YES];

搖一搖和手勢