NSThread
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#import "ViewController.h"@interface ViewController (){ NSThread *thread1; NSThread *thread2; UIButton *btn;} @end@implementation ViewController- (void)viewDidLoad { [super viewDidLoad]; btn=[UIButton buttonWithType:UIButtonTypeCustom]; btn.frame=CGRectMake(30, 30, 50, 50); [btn setTitle:@"按钮" forState:UIControlStateNormal]; btn.backgroundColor=[UIColor greenColor]; [self.view addSubview:btn]; //线程创建 主要有两种方法 thread1=[[NSThread alloc] initWithTarget:self selector:@selector(threadfun1) object:nil]; [thread1 start];//此方法创建需要手动启动 //此方法自动启动线程方法 [NSThread detachNewThreadSelector:@selector(threadfun2) toTarget:self withObject:nil];}-(void)threadfun1{ NSLog(@"thread1"); //调用主线程更新 [self performSelectorOnMainThread:@selector(upbutton) withObject:nil waitUntilDone:NO]; }-(void)upbutton{ [btn setTitle:@"123" forState:UIControlStateNormal]; [self performSelector:@selector(threadtothread) withObject:nil]; }-(void)threadtothread{ NSLog(@"threadtothread");}-(void)threadfun2{ NSLog(@"thread2");}- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.}@end |
