IOS 多线程4种使用方法：pThread，NSThread，GCD和NSOperation-白红宇

IOS 多线程4种使用方法：pThread，NSThread，GCD和NSOperation

阅读量：5939 次

发布时间：2019-06-19

本文共 2432 字，大约阅读时间需要 8 分钟。

pThread 使用方法

#import "ViewController.h"#import 
    
       //pThread需要导入@interface ViewController ()
     
      @end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    UIButton *but1 = [[UIButton alloc]initWithFrame:CGRectMake(100, 100, 100, 30)];    [but1 setTitle:@"pThread" forState:UIControlStateNormal];    [but1 setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];    [but1 addTarget:self action:@selector(pThreadClick) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:but1];}#pragma mark pThread是基于C语言的线程  OC里面不常用- (void)pThreadClick{    NSLog(@"这是主线程");    pthread_t pthread;    //创建一个线程    pthread_create(&pthread, NULL, run, NULL);  //run 是要执行的方法按照C语言来写}void *run(void *dadta){    NSLog(@"这是子线程");    for (int i = 0; i< 10; i++) {        NSLog(@"%d",i);        sleep(1);//线程休眠    }    return NULL;}

NSThread 的使用

#import "ViewController.h"@interface ViewController ()
    
     @end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    UIButton *but1 = [[UIButton alloc]initWithFrame:CGRectMake(100, 100, 100, 30)];    [but1 setTitle:@"NSThread" forState:UIControlStateNormal];    [but1 setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];    [but1 addTarget:self action:@selector(NSThreadClick) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:but1];}#pragma mark NSThread 完全面向对象- (void)NSThreadClick{    NSLog(@"这是主线程");    //第一种方法    NSThread *thread1 = [[NSThread alloc]initWithBlock:^{        NSLog(@"这是子线程");        for (int i = 0; i< 10; i++) {            NSLog(@"%d",i);            sleep(1);//线程休眠        }    }];    [thread1 setName:@"thread1"];    [thread1 setThreadPriority:.7];//设置线程优先级 0-1    [thread1 start];       NSThread *thread2 = [[NSThread alloc]initWithTarget:self selector:@selector(run) object:nil];    [thread2 setThreadPriority:.4];//设置线程优先级 0-1    [thread2 setName:@"thread2"];//设置线程名字    [thread2 start];    //第二种方法 通过detachNewThreadSelector 静态方法//    [NSThread detachNewThreadSelector:@selector(run) toTarget:self withObject:nil];    //第三种方法  通过Object下的 performSelectorInBackground 方法创建//    [self performSelectorInBackground:@selector(run) withObject:nil];}- (void)run{    NSLog(@"这是子线程:%@",[NSThread currentThread].name);    for (int i = 0; i< 10; i++) {        NSLog(@"%d",i);        sleep(1);//线程休眠    }}