NSSthread
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
NSLog(@"当前方法所在的线程%@",[NSThread currentThread]);
//创建了一个子线程，指定了子线程的方法,自动执行的
// [NSThread detachNewThreadSelector:@selector(doThing) toTarget:self withObject:nil];
// 第二种创建线程的方法（NSThread）,不会自动执行
NSThread *thread = [[NSThread alloc]initWithTarget:self selector:@selector(doThing) object:nil];
thread.name = @"下载线程";
//启动线程
[thread start];
//创建另一个线程
NSThread *thread1 = [[NSThread alloc]initWithTarget:self selector:@selector(doThing1) object:nil];
thread1.name = @"上传线程";
//启动
[thread1 start];
//取消一个线程
// [thread1 cancel];
}
- (void)doThing1 {
//线程休眠,可以让线程休眠一段时间
NSLog(@"进入子线程,紧接着就让这个线程，休眠3秒");
[NSThread sleepForTimeInterval:3];
//线程休眠方法二
NSDate *date = [NSDate dateWithTimeIntervalSinceNow:3];
[NSThread sleepUntilDate:date];
NSLog(@"休眠结束了");
for (int i = 0; i < 100; i++) {
NSLog(@"-----%d %@",i,[NSThread currentThread]);
}
//让子线程里面 刷新UI（错误的做法）,UI会刷新的不及时
// UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"欢迎来到子线程" message:nil preferredStyle:UIAlertControllerStyleAlert];
// [self presentViewController:alert animated:YES completion:nil];
}
//方法里面，做的事情，都是子线程在做
- (void)doThing {
NSLog(@"子线程，做事情");
//主线程
NSLog(@"主线程%@",[NSThread mainThread]);
NSLog(@"当前方法所在的线程%@",[NSThread currentThread]);
for (int i = 0; i < 100; i++) {
NSLog(@"-----%d %@",i,[NSThread currentThread]);
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}