最近貌似爱上写cocoa代码了 做了一个小程序
现将一些要用到的内容标记一下～ 以备不时之用。

定时刷新

[NSTimer scheduledTimerWithTimeInterval:time target:self selector:@selector(timerFired:) userInfo:nil repeats:YES];
//定时刷新所用到的函数
- (void)timerFired:(id)sender
{
    [self reflash:1];
}

读取plist
因为在沙盒中不能进行写，所以要读取的是另一个

//获取应用程序沙盒的Documents目录
NSArray *paths= NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *plistPath1 = [paths objectAtIndex:0];

//得到完整的文件名
NSString *filename=[plistPath1 stringByAppendingPathComponent:@"config.plist"];
//分配空间
NSMutableDictionary *data = [[NSMutableDictionary alloc] initWithContentsOfFile:filename];

//取得值
NSInteger lasttid = [ data objectForKey:@"lasttid" ];

写plist

NSArray *paths= NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *plistPath1 = [paths objectAtIndex:0];
//得到完整的文件名
NSString *filename=[plistPath1 stringByAppendingPathComponent:@"config.plist"];
//分配空间
NSMutableDictionary *data = [[NSMutableDictionary alloc] initWithContentsOfFile:filename];
//取得值
NSInteger lasttid = [ data objectForKey:@"lasttid" ];
[data setObject:tmp forKey:@"lasttid" ];
[data writeToFile:filename atomically:YES];

通知中心

NSUserNotification *notification = [[NSUserNotification alloc] init];
notification.title = title;
notification.subtitle = subtitle;
notification.informativeText = informativeText;

//只有当用户设置为提示模式时，才会显示按钮
notification.hasActionButton = YES;
notification.actionButtonTitle = @"OK";
notification.otherButtonTitle = @"Cancel";

//递交通知
[[NSUserNotificationCenter defaultUserNotificationCenter] scheduleNotification:notification];
//设置通知的代理
[[NSUserNotificationCenter defaultUserNotificationCenter] setDelegate:self];

删除通知

//删除已经显示过的通知(已经存在用户的通知列表中的)
[[NSUserNotificationCenter defaultUserNotificationCenter] removeAllDeliveredNotifications];

//删除已经在执行的通知(比如那些循环递交的通知)
for (NSUserNotification *notify in [[NSUserNotificationCenter defaultUserNotificationCenter] scheduledNotifications])
{
    [[NSUserNotificationCenter defaultUserNotificationCenter] removeScheduledNotification:notify];
}

添加微标数字

[[NSApp dockTile] setBadgeLabel:[NSString stringWithFormat:@"%ld", row]];

移除微标数字

- (void)removeBadge
{
    [[NSApp dockTile] setBadgeLabel:nil];
}

用函数来实现小数据的读写

//保存数据在某个文件中，一般在/Users/用户名/Library/Preferences/下
[[NSUserDefaults standardUserDefaults] setInteger:newid forKey:@"id"];

//获得已经保存的内容
NSInteger lasttid = [[NSUserDefaults standardUserDefaults] integerForKey:@"id"];

窗口关闭后能继续打开窗口：
头文件内加入

@property (assign) IBOutlet NSWindow *window;

实现类

- (BOOL)applicationShouldHandleReopen:(NSApplication *)theApplication hasVisibleWindows:(BOOL)flag
{
    if (!flag){
        [self.window makeKeyAndOrderFront:self];
        return YES;
    }
    return NO;
}

【声明】本文 整理关于Cocoa编程的一些有用的函数 为柠之漠然原创文章，转载请注明出自 枫之落叶
并保留本文有效链接：https://blog.shiniv.com/2013/06/organize-some-functions-on-cocoa-programming/ , 转载请保留本声明！

标签: cocoa, JSON, Mac, URL, 编程