#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

   

    //开启多线程方法一

//    [self performSelectorInBackground:@selector(threadAction) withObject:nil];

   

    //开启多线程方法二

//    NSThread *thread = [[NSThread alloc]initWithTarget:self selector:@selector(threadAction) object:nil];

    //thread.name = @"thread1";

//    NSLog(@"MAIN中:%@",thread);

//    [thread start];

   

    //开启多线程方法三

//    [NSThread detachNewThreadSelector:@selector(threadAction) toTarget:self withObject:nil];

   

   

    for (int i = 0; i < 50; i ++) {

        NSLog(@"main: %d",i);

    }

}

- (void)threadAction{

   

    NSThread *thread = [NSThread currentThread];

        NSLog(@"thread中:%@",thread);

   

    for (int i = 0 ; i < 50; i ++) {

        NSLog(@"thread:  %d",i);

       

        if (i==10) {

            [NSThread exit];

        }

       

        if ([NSThread isMultiThreaded]) {

            NSLog(@"是多线程");

        }

    }

}

@end