NSThread创建线程

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    //第一种方式
    UIButton *btn1 = [UIButton buttonWithType:UIButtonTypeSystem];
    btn1.frame = CGRectMake(50, 100, 100, 40);
    [btn1 setTitle:@"按钮一" forState:UIControlStateNormal];
    [btn1 addTarget:self action:@selector(threadOne:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:btn1];
    
    //第二种方式
    UIButton *btn2 = [UIButton buttonWithType:UIButtonTypeSystem];
    btn2.frame = CGRectMake(50, 200, 100, 40);
    [btn2 setTitle:@"按钮二" forState:UIControlStateNormal];
    [btn2 addTarget:self action:@selector(threadTwo:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:btn2];
}

//第二种方式
-(void)threadTwo:(id)sender
{
    //NSLog(@"点击了按钮");
    //参数一:线程执行体方法所属的对象
    //参数二:线程执行体对应的方法
    //参数三:线程执行体方法的实参
    NSNumber *n=@50;
    //创建线程  并没有启动(需手动启动)
    NSThread *t = [[NSThread alloc] initWithTarget:self selector:@selector(createThreadTwo:) object:n];
    t.name = @"线程B";
    [t start];
    
}

-(void)createThreadTwo:(NSNumber *)n
{
    for (int i=0; i<n.intValue; i++) {
        NSThread *t = [NSThread currentThread];
        NSLog(@"执行了%@:%d",t.name,i);
    }
}

//第一种方式
-(void)threadOne:(id)sender
{
    //参数一:线程执行体的方法
    //参数二:线程执行体所属对象
    //参数三:线程执行体方法传递的实参
    NSNumber *n = @100;
    //创建并启动一个线程
    [NSThread detachNewThreadSelector:@selector(createOne:) toTarget:self withObject:n];
}

- (void)createOne:(NSNumber *)n
{
    [NSThread currentThread].name = @"线程A";
    
    for (int i=0; i<n.intValue; i++) {
        //[NSThread sleepForTimeInterval:1];
        NSLog(@"执行%@:%d",[NSThread currentThread].name,i);
    }
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end