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