iOS多线程开发小demo2，NSThread篇

用NSThread创建子线程的3种方法

//  DYFViewController.m
//  623-02-pthread
//
//  Created by dyf on 14-6-23.
//  Copyright (c) 2014年 ___FULLUSERNAME___. All rights reserved.
//

#import "DYFViewController.h"
#import <pthread.h>

@interface DYFViewController ()

@end

@implementation DYFViewController

//// c语言函数
//void *run(void *data)
//{
//    // 1.获取当前的线程
//    NSThread *cThread = [NSThread currentThread];
//    
//    // 2.打印线程
//    NSLog(@"%@", cThread);
//    
//    // 3.h耗时操作
//    for (int i = 0; i < 9999; i++) {
//        NSLog(@"%@", cThread);
//    }
//
//    return NULL;
//}

- (IBAction)btnOnClick {
    // 1.获取当前的线程
    NSThread *cthread = [NSThread currentThread];
    
    NSThread *mt = [NSThread mainThread];
    // 2.打印线程
    NSLog(@"%@", cthread);
    
    NSLog(@"%@", mt);
    
    // 3.执行一线耗时的操作 ： 创建一套子线程
    [self threadCreate3];
  
}
- (void)run:(NSString *)parma
{
//    [NSThread threadPriority];
//    
//    [NSThread setThreadPriority:0.55];
    // 取值0-1，默认0.5
    for (int i = 0; i < 9999; i++) {
        NSLog(@"%@---------%@", [NSThread currentThread], parma);
    }
}

- (void)threadCreate5
{
    // 分离出的子线程
    [NSThread detachNewThreadSelector:@selector(run:) toTarget:self withObject:@"2222222"];
}
- (void)threadCreate4
{
    // 分离出的子线程
    [NSThread detachNewThreadSelector:@selector(run:) toTarget:self withObject:@"2222222"];
}

/**
 *  NSThread创建方式3：隐世线程创建，并且直接（自动）启动
 */
- (void)threadCreate3
{
    [self performSelectorInBackground:@selector(run:) withObject:@"333333"];
}

/**
 *  创建方式2：创建完线程后自动启动
 */
- (void)threadCreate2
{
    // 分离出的子线程
    [NSThread detachNewThreadSelector:@selector(run:) toTarget:self withObject:@"2222222"];
}

/**
 *  创建方式1：①先创建初始化子线程②再启动
 */
- (void)threadCreate
{
    NSThread *thread1 = [[NSThread alloc] initWithTarget:self selector:@selector(run:) object:@"heheh"];
    thread1.name = @"thread1";
    // 开启线程
    [thread1 start];
    
    NSThread *thread2 = [[NSThread alloc] initWithTarget:self selector:@selector(run:) object:@"heheh"];
    thread2.name = @"thread2";
    // 开启线程
    [thread2 start];
    
    NSThread *thread3 = [[NSThread alloc] initWithTarget:self selector:@selector(run:) object:@"heheh"];
    thread3.name = @"33";
    // 开启线程
    [thread3 start];
}

@end

 利用NSThread在开发中也不常用，了解即可