标签：blog http os strong io 2014
1.当设备摇动时，系统会算出加速计的值，并告知是否发生了摇动手势。系统只会运动开始和结束时通知你，并不会在运动发生的整个过程中始终向你报告每一次运动。例如，你快速摇动设备三次，那只会收到一个摇动事件。
2，想要实现摇动手势，首先需要使视图控制器成为第一响应者，注意不是单独的控件。成为第一响应者最恰当的时机是在视图出现的时候，而在视图消失的时候释放第一响应者。
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-(BOOL)canBecomeFirstResponder{ return
YES;}-(void)viewDidAppear:(BOOL)animated{ [super
viewDidAppear:animated]; [self
becomeFirstResponder];}-(void)viewWillDisappear:(BOOL)animated{ [self
resignFirstResponder]; [super
viewWillDisappear:animated];} |
现在，视图控制器准备处理运动事件，其中有三个方法，motionBegan，motionEnded和motionCancelled，这些与触摸方法有着相似的工作原理，但没有移动方法。
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- (void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event{ if
(event.type == UIEventSubtypeMotionShake) { NSLog(@"Shake Began"); }}-(void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event{ if
(event.type == UIEventSubtypeMotionShake) { NSLog(@"Shake End"); }}-(void)motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event{ if
(event.type == UIEventSubtypeMotionShake) { NSLog(@"Shake Cancelled"); }} |
以上是转载自http://blog.csdn.net/marvindev
我的代码：
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//// ocqViewController.m// shake//// Created by ocq on 14-4-29.// Copyright (c) 2014年 ocq. All rights reserved.//#import "ocqViewController.h"@interface
ocqViewController ()@end@implementation
ocqViewController- (void)viewDidLoad{ [super
viewDidLoad]; NSLog(@"初始化了实例"); // Do any additional setup after loading the view, typically from a nib.}- (void)didReceiveMemoryWarning{ [super
didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.}-(BOOL)canBecomeFirstResponder{ return
YES;}-(void)viewDidAppear:(BOOL)animated{ [super
viewDidAppear:animated]; [self
becomeFirstResponder];}-(void)viewWillDisappear:(BOOL)animated{ [self
resignFirstResponder]; [super
viewWillDisappear:animated];}////当手机移动结束时调用该方法#pragma motion移动的类型 UIEvent事件- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event{ //如果是摇手机类型的事件 if(motion==UIEventSubtypeMotionShake){ |
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NSLog(@"摇动了手机"); |
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//创建并初始化对话框 UIAlertView *show=[[UIAlertView alloc] initWithTitle:@"ocq ios 学习" message:@"恭喜，您查找到了好友" delegate:nil cancelButtonTitle:@"添加为好友" otherButtonTitles: nil]; //显示对话框 [show show]; // [show release]; <br>} <br>} <br>@end<br><br> |
标签：blog http os strong io 2014
原文地址：http://www.cnblogs.com/langtianya/p/3700163.html
