iOS-NSNotificationCenter常用通知名称

一、简单的通知

发送方：仅仅发送通知，不包含发送数据
[[NSNotificationCenter defaultCenter] postNotificationName:@"getTargetJid" object:self];
接受方：开启监听通知
[[NSNotificationCenter defaultCenter] addObserver: self
                                         selector: @selector(AddFriendAndGetrlyOnline)
                                             name: @"getTargetJid"
                                           object: nil];

二、通知加传值

情况一：数据简单

发送方：发送通知，包含发送数据
[[NSNotificationCenter defaultCenter] postNotificationName:@"getIsOnlineInfo" object:self userInfo:@{@"isOnline":@"yesOnline"}];

接受方：开启监听通知
[[NSNotificationCenter defaultCenter] addObserver: self
                                         selector: @selector(getIsOnlineInfo:)
                                             name: @"getIsOnlineInfo"
                                           object: nil];

接收方：提取数据
-(void)getIsOnlineInfo:(NSNotification*)notification
{
    NSDictionary *nameDictionary = [notification userInfo];
    NSString *isonline = [nameDictionary objectForKey:@"isOnline"];
    
    if ([isonline isEqualToString:@"yesOnline"])
    {
        [self TESTBtn];
    }
    if ([isonline isEqualToString:@"noOnlie"])
    {
        NSLog(@"对方容联云不在线");
    }
}

情况二：数据复杂

数据为 字典， 字典里数据是数组；
NSMutableArray * numArr = [[NSMutableArray alloc]initWithCapacity:5];
NSMutableArray * statusArr = [[NSMutableArray alloc]initWithCapacity:5];
NSMutableArray * snArr = [[NSMutableArray alloc]initWithCapacity:5];
NSDictionary *userInfoDic = [NSDictionary dictionaryWithObjectsAndKeys:
                                         numArr,@"mtSwitchNum",
                                         statusArr,@"mtSwitchStatus",
                                         snArr,@"mtSwitchSn",nil];

创建消息对象   发送消息
//创建一个消息对象
NSNotification * notice = [NSNotification notificationWithName:DENGKONG_STATUS_CHANGED object:nil userInfo:@{@"name":userInfoDic}];
//发送消息
[[NSNotificationCenter defaultCenter]postNotification:notice];

接受界面添加观察者
//添加当前类对象为一个观察者，name和object设置为nil，表示接收一切通知
[center addObserver:self selector:@selector(refreshDKView:) name:DENGKONG_STATUS_CHANGED object:nil];

接受界面观察者回调函数
//将获取到的灯的状态进行界面显示
-(void)refreshDKView:(NSNotification*)sender
{
//    NSLog(@"%@",sender);
    //解析列子    NSDictionary *nameDictionary = [notification userInfo];
    NSDictionary *resultDic = [sender userInfo];
    
    NSDictionary * contentDic = [resultDic objectForKey:@"name"];
    
    NSArray * numArr = [contentDic objectForKey:@"mtSwitchNum"];
    NSString *a = [numArr objectAtIndex:0];
    
    NSArray * statusArr = [contentDic objectForKey:@"mtSwitchStatus"];
    NSString *b = [statusArr objectAtIndex:0];
    
    NSArray * snArr = [contentDic objectForKey:@"mtSwitchSn"];
    NSString *c = [snArr objectAtIndex:0];
    
    NSLog(@"值：%@:%@:%@",a,b,c);
    
}

二、移除监听

[center removeObserver:self];
是删除通知中心保存的调度表一个观察者的所有入口
or

[center removeObserver:self name:UIContentSizeCategoryDidChangeNotification object:nil];
是删除匹配了通知中心保存的调度表中观察者的一个入口

三、常用通知

//音频
AVF_EXPORT NSString *const AVAudioSessionInterruptionNotification                        //音频中断出现
AVF_EXPORT NSString *const AVAudioSessionRouteChangeNotification                            //系统的音频线路发生改变
AVF_EXPORT NSString *const AVAudioSessionMediaServicesWereLostNotification                  //媒体服务终止
AVF_EXPORT NSString *const AVAudioSessionMediaServicesWereResetNotification                 //媒体服务重新启动

//视频
AVF_EXPORT NSString *const AVPlayerItemTimeJumpedNotification                               // 播放时间跳跃
AVF_EXPORT NSString *const AVPlayerItemDidPlayToEndTimeNotification                         // 播放结束
AVF_EXPORT NSString *const AVPlayerItemFailedToPlayToEndTimeNotification                    // 没能播放到最后
AVF_EXPORT NSString *const AVPlayerItemPlaybackStalledNotification                          // 播放抛锚
AVF_EXPORT NSString *const AVPlayerItemNewAccessLogEntryNotification                        // 添加新的访问日志条目
AVF_EXPORT NSString *const AVPlayerItemNewErrorLogEntryNotification                         // 添加新的错误日志条目
 
MP_EXTERN NSString *const MPMediaLibraryDidChangeNotification;                              //媒体库发生改变
MP_EXTERN NSString *const MPMediaPlaybackIsPreparedToPlayDidChangeNotification           //后台准备播放发生改变
MP_EXTERN NSString *const MPMoviePlayerScalingModeDidChangeNotification;           //视频缩放填充模式发生改变
MP_EXTERN NSString *const MPMoviePlayerPlaybackDidFinishNotification;              //媒体播放完成或用户手动退出
MP_EXTERN NSString *const MPMoviePlayerPlaybackStateDidChangeNotification                   //播放状态改变
MP_EXTERN NSString *const MPMoviePlayerLoadStateDidChangeNotification                       //媒体网络加载状态改变
MP_EXTERN NSString *const MPMoviePlayerNowPlayingMovieDidChangeNotification //当前播放的媒体内容发生改变
MP_EXTERN NSString *const MPMoviePlayerWillEnterFullscreenNotification                      //将进入全屏
MP_EXTERN NSString *const MPMoviePlayerDidEnterFullscreenNotification                       //进入全屏后
MP_EXTERN NSString *const MPMoviePlayerWillExitFullscreenNotification                       //将要退出全屏
MP_EXTERN NSString *const MPMoviePlayerDidExitFullscreenNotification                        //退出全屏后
MP_EXTERN NSString *const MPMoviePlayerIsAirPlayVideoActiveDidChangeNotification         //当媒体开始通过AirPlay播放或者结束AirPlay
MP_EXTERN NSString *const MPMoviePlayerReadyForDisplayDidChangeNotification                 //视频显示状态改变
MP_EXTERN NSString *const MPMovieMediaTypesAvailableNotification                            //确定了媒体可用类型后
MP_EXTERN NSString *const MPMovieSourceTypeAvailableNotification                            // 确定了媒体来源后
MP_EXTERN NSString *const MPMovieDurationAvailableNotification                              //确定了媒体播放时长后
MP_EXTERN NSString *const MPMovieNaturalSizeAvailableNotification                           //确定了媒体的实际尺寸后
MP_EXTERN NSString *const MPMoviePlayerThumbnailImageRequestDidFinishNotification         //缩略图请求完成之后
MP_EXTERN NSString *const MPMoviePlayerTimedMetadataUpdatedNotification                     //同步元数据发生更新
MP_EXTERN NSString *const MPMoviePlayerContentPreloadDidFinishNotification                  //媒体内容预加载完成
MP_EXTERN NSString *const MPMusicPlayerControllerPlaybackStateDidChangeNotification;        //播放状态改变
MP_EXTERN NSString *const MPMusicPlayerControllerNowPlayingItemDidChangeNotification;       //播放内容改变
MP_EXTERN NSString *const MPMusicPlayerControllerVolumeDidChangeNotification;               //音量发生改变


//拍照/录像
AVF_EXPORT NSString *const AVCaptureDeviceWasConnectedNotification                          //输入设备已连接
AVF_EXPORT NSString *const AVCaptureDeviceWasDisconnectedNotification                       //输入设备失去连接
AVF_EXPORT NSString *const AVCaptureDeviceSubjectAreaDidChangeNotification                  //捕获区域发生改变
AVF_EXPORT NSString *const AVCaptureInputPortFormatDescriptionDidChangeNotification   //输入设备端口描述改变
AVF_EXPORT NSString *const AVCaptureSessionRuntimeErrorNotification                         //媒体会话运行错误
AVF_EXPORT NSString *const AVCaptureSessionDidStartRunningNotification                      //媒体会话开始运行
AVF_EXPORT NSString *const AVCaptureSessionDidStopRunningNotification                       //媒体会话停止运行
AVF_EXPORT NSString *const AVCaptureSessionWasInterruptedNotification                       //媒体会话中断
AVF_EXPORT NSString *const AVCaptureSessionInterruptionEndedNotification                    //媒体会话中断停止

//常用视图
UIKIT_EXTERN NSString *const UITableViewSelectionDidChangeNotification;                     //TableView选中发生改变

UIKIT_EXTERN NSString *const UITextFieldTextDidBeginEditingNotification;                    //TextField开始编辑
UIKIT_EXTERN NSString *const UITextFieldTextDidEndEditingNotification;                      //TextField发生改变
UIKIT_EXTERN NSString *const UITextFieldTextDidChangeNotification;                          //TextField结束编辑

UIKIT_EXTERN NSString * const UITextViewTextDidBeginEditingNotification;                    //TextView开始编辑
UIKIT_EXTERN NSString * const UITextViewTextDidChangeNotification;                          //TextView发生改变
UIKIT_EXTERN NSString * const UITextViewTextDidEndEditingNotification;                      //TextView结束编辑

UIKIT_EXTERN NSString *const UIWindowDidBecomeVisibleNotification;  //window激活并展示在界面的时候触发
UIKIT_EXTERN NSString *const UIWindowDidBecomeHiddenNotification;                           //当window隐藏的时候触发
UIKIT_EXTERN NSString *const UIWindowDidBecomeKeyNotification;      //当window被设置为keyWindow时触发
UIKIT_EXTERN NSString *const UIWindowDidResignKeyNotification;                   //当window的key位置被取代时触发
UIKIT_EXTERN NSString *const UIKeyboardWillShowNotification;                                //键盘将弹出
UIKIT_EXTERN NSString *const UIKeyboardDidShowNotification;                                 //键盘弹出
UIKIT_EXTERN NSString *const UIKeyboardWillHideNotification;                                //键盘将要隐藏
UIKIT_EXTERN NSString *const UIKeyboardDidHideNotification;                                 //键盘隐藏
UIKIT_EXTERN NSString *const UIKeyboardWillChangeFrameNotification                       //键盘frame将发生改变
UIKIT_EXTERN NSString *const UIKeyboardDidChangeFrameNotification                        //键盘frame发生改变后


//日期，时间
FOUNDATION_EXPORT NSString * const NSCalendarDayChangedNotification                         //日期发生改变
FOUNDATION_EXPORT NSString * const NSSystemClockDidChangeNotification                       //系统时钟发生改变
FOUNDATION_EXPORT NSString * const NSSystemTimeZoneDidChangeNotification                    //系统时区发生改变


//线程
FOUNDATION_EXPORT NSString * const NSWillBecomeMultiThreadedNotification;                   //将变成多线程
FOUNDATION_EXPORT NSString * const NSDidBecomeSingleThreadedNotification;                   //变成了单线程
FOUNDATION_EXPORT NSString * const NSThreadWillExitNotification;                            //线程退出


//程序
UIKIT_EXTERN NSString *const UIApplicationDidEnterBackgroundNotification                    //程序进入后台
UIKIT_EXTERN NSString *const UIApplicationWillEnterForegroundNotification                   //程序将进入前台
UIKIT_EXTERN NSString *const UIApplicationDidFinishLaunchingNotification;                   //程序加载完成
UIKIT_EXTERN NSString *const UIApplicationDidBecomeActiveNotification;                      //程序变成激活状态
UIKIT_EXTERN NSString *const UIApplicationWillResignActiveNotification;                     //程序将失去激活状态
UIKIT_EXTERN NSString *const UIApplicationDidReceiveMemoryWarningNotification;              //接收到内存警告
UIKIT_EXTERN NSString *const UIApplicationWillTerminateNotification;                        //程序将终止
UIKIT_EXTERN NSString *const UIApplicationSignificantTimeChangeNotification;         //新的一天开始或时区发生变化
UIKIT_EXTERN NSString *const UIApplicationWillChangeStatusBarOrientationNotification;       //将改变状态栏方向
UIKIT_EXTERN NSString *const UIApplicationDidChangeStatusBarOrientationNotification;        //状态栏方向以改变
UIKIT_EXTERN NSString *const UIApplicationWillChangeStatusBarFrameNotification;             //将改变状态栏frame
UIKIT_EXTERN NSString *const UIApplicationDidChangeStatusBarFrameNotification;              //状态栏frame发生改变
UIKIT_EXTERN NSString *const UIApplicationBackgroundRefreshStatusDidChangeNotification //后台刷新状态改变
UIKIT_EXTERN NSString *const UIApplicationUserDidTakeScreenshotNotification                 //截屏时触发通知

//硬件设备
UIKIT_EXTERN NSString *const UIDeviceOrientationDidChangeNotification;                      //设备方向改变
UIKIT_EXTERN NSString *const UIDeviceBatteryStateDidChangeNotification                      //电池状态改变
UIKIT_EXTERN NSString *const UIDeviceBatteryLevelDidChangeNotification                      //电池电量改变
UIKIT_EXTERN NSString *const UIDeviceProximityStateDidChangeNotification                    //距离感应器状态发生改变

//其它
UIKIT_EXTERN NSString *const UILocalNotificationDefaultSoundName                            //本地通知声音

UIKIT_EXTERN NSString *const UIPasteboardChangedNotification;                               //粘贴板发生改变
UIKIT_EXTERN NSString *const UIPasteboardRemovedNotification;                               //粘贴板内容移除
 
FOUNDATION_EXPORT NSString * const NSUserDefaultsDidChangeNotification;               //NSUserDefaults发生改变
FOUNDATION_EXPORT NSString * const NSBundleDidLoadNotification;                             //bundle加载完成