1、NSThread头文件中的相关方法//获取当前线程 +(NSThread *)currentThread; //创建线程后自动启动线程+ (void)detachNewThreadSelector:(SEL)selector toTarget:(id)target withObject:(id)argument;//是否是多线程+ (BOOL)isMultiThreaded;//线程字典- (NSMutableDictionary *)threadDictionary;//线程休眠到什么时间+ (void)sleepUntilDate:(NSDate *)date;//线程休眠多久+ (void)sleepForTimeInterval:(NSTimeInterval)ti;//退出线程+ (void)exit;//线程优先级+ (double)threadPriority;+ (BOOL)setThreadPriority:(double)p;- (double)threadPriority NS_AVAILABLE(10_6, 4_0);- (void)setThreadPriority:(double)p NS_AVAILABLE(10_6, 4_0);//调用栈返回地址+ (NSArray *)callStackReturnAddresses NS_AVAILABLE(10_5, 2_0);+ (NSArray *)callStackSymbols NS_AVAILABLE(10_6, 4_0);//设置线程名字- (void)setName:(NSString *)n NS_AVAILABLE(10_5, 2_0);- (NSString *)name NS_AVAILABLE(10_5, 2_0);//获取栈的大小- (NSUInteger)stackSize NS_AVAILABLE(10_5, 2_0);- (void)setStackSize:(NSUInteger)s NS_AVAILABLE(10_5, 2_0);//是否是主线程- (BOOL)isMainThread NS_AVAILABLE(10_5, 2_0);+ (BOOL)isMainThread NS_AVAILABLE(10_5, 2_0); // reports whether current thread is main+ (NSThread *)mainThread NS_AVAILABLE(10_5, 2_0);- (id)init NS_AVAILABLE(10_5, 2_0);	// designated initializer- (id)initWithTarget:(id)target selector:(SEL)selector object:(id)argument NS_AVAILABLE(10_5, 2_0);//是否正在执行- (BOOL)isExecuting NS_AVAILABLE(10_5, 2_0);//是否执行完成- (BOOL)isFinished NS_AVAILABLE(10_5, 2_0);//是否取消线程- (BOOL)isCancelled NS_AVAILABLE(10_5, 2_0);- (void)cancel NS_AVAILABLE(10_5, 2_0);//线程启动- (void)start NS_AVAILABLE(10_5, 2_0);- (void)main NS_AVAILABLE(10_5, 2_0);	// thread body method@end//多线程通知FOUNDATION_EXPORT NSString * const NSWillBecomeMultiThreadedNotification;FOUNDATION_EXPORT NSString * const NSDidBecomeSingleThreadedNotification;FOUNDATION_EXPORT NSString * const NSThreadWillExitNotification;@interface NSObject (NSThreadPerformAdditions)//与主线程通信- (void)performSelectorOnMainThread:(SEL)aSelector withObject:(id)arg waitUntilDone:(BOOL)wait modes:(NSArray *)array;- (void)performSelectorOnMainThread:(SEL)aSelector withObject:(id)arg waitUntilDone:(BOOL)wait;	// equivalent to the first method with kCFRunLoopCommonModes//与其他子线程通信- (void)performSelector:(SEL)aSelector onThread:(NSThread *)thr withObject:(id)arg waitUntilDone:(BOOL)wait modes:(NSArray *)array NS_AVAILABLE(10_5, 2_0);- (void)performSelector:(SEL)aSelector onThread:(NSThread *)thr withObject:(id)arg waitUntilDone:(BOOL)wait NS_AVAILABLE(10_5, 2_0);	// equivalent to the first method with kCFRunLoopCommonModes//隐式创建并启动线程- (void)performSelectorInBackground:(SEL)aSelector withObject:(id)arg NS_AVAILABLE(10_5, 2_0);