//  Created by dyf on 14-6-23.//  Copyright (c) 2014年 ___FULLUSERNAME___. All rights reserved.//#import "DYFViewController.h"@interface DYFViewController ()@property (nonatomic, strong) NSThread *thread;@end@implementation DYFViewController- (void)viewDidLoad{    [super viewDidLoad];	// Do any additional setup after loading the view, typically from a nib.        self.thread = [[NSThread alloc] initWithTarget:self selector:@selector(test) object:@"111"];    self.thread.name = @"1111111111";}- (void)test {    //    NSLog(@"startedtest------%@", [[NSThread currentThread] name]);    //    // 阻塞状态2//    NSDate *date = [NSDate dateWithTimeIntervalSinceNow:5.0];//    [NSThread sleepUntilDate:date];    //    // 阻塞状态1//    [NSThread sleepForTimeInterval:5.0];        for (int i = 0; i < 999; i++) {        NSLog(@"test-----%d------%@", i, [[NSThread currentThread] name]);                if (i == 50) {            [NSThread exit];        }    }        NSLog(@"endedtest------%@", [[NSThread currentThread] name]);}#warning 点击2次屏幕会出现 ‘NSInvalidArgumentException‘, reason: ‘*** -[NSThread start]: attempt to start the thread again‘，调用已经死的线程会报错- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{    // 开启线程    [self.thread start];}@end