10.1 NSThread 不常用 难以管理

////  ViewController.m//  10 NSThread////  Created by Tracy on 15/5/29.//  Copyright (c) 2015年 Tracy. All rights reserved.//#import "ViewController.h"@interface ViewController ()@property (strong, nonatomic) IBOutlet UIProgressView *progressView;@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.//    [self doWork];//    [self doWork];//    [self doWork];    }- (IBAction)useThread:(UIButton *)sender{    NSThread*thread=[[NSThread alloc]initWithTarget:self selector:@selector(doWork) object:nil];    [thread start];//启动线程    //第二种方式    [NSThread detachNewThreadSelector:@selector(doWork) toTarget:self withObject:nil];    //第三种方式    [self performSelectorInBackground:@selector(doWork) withObject:nil];}- (IBAction)updateProgress:(UIButton *)sender{    [NSThread detachNewThreadSelector:@selector(updateProgressView) toTarget:self withObject:nil];    }-(void)updateProgressView{    self.progressView.progress=0.0f;    for (int i=0; i<100; i++) {        [NSThread sleepForTimeInterval:0.1f];        [self performSelectorOnMainThread:@selector(upDateUI) withObject:nil waitUntilDone:YES];    }}-(void)upDateUI{    self.progressView.progress+=0.01;}-(void)doWork{    for (int i=0; i<30; i++) {        [NSThread sleepForTimeInterval:0.01f];        NSLog(@"%d thread %@",i,[NSThread currentThread]);    }}- (IBAction)fetchMoney:(UIButton *)sender{    NSThread*husband=[[NSThread alloc]initWithTarget:self selector:@selector(fetchMoneyByWho:) object:@"husband"];    [husband start];        NSThread*wife=[[NSThread alloc]initWithTarget:self selector:@selector(fetchMoneyByWho:) object:@"wife"];    [wife start];        NSThread*dau=[[NSThread alloc]initWithTarget:self selector:@selector(fetchMoneyByWho:) object:@"dau"];    [dau start];}-(void)fetchMoneyByWho:(NSString*)name{    static int money=10000;//    NSLog(@"before who %@,how much %d",name,money);//    //    money-=2000;//    NSLog(@"after who %@,how much %d",name,money); 

//@synchronized 可以使线程同步，避免异步使取钱，买票等情况发生错误

   @synchronized (self)    {        NSLog(@"before who %@,how much %d",name,money);                    money-=2000;            NSLog(@"after who %@,how much %d",name,money);    }}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}@end