iOS NSThread和NSOperation的基本使用详解

nsthread适合简单的耗时任务的执行，它有两种执行方法

- (void)oneclick{
 [nsthread detachnewthreadselector:@selector(dosomething:) totarget:self withobject:@"oneclick"];
}
-(void)dosomething:(nsstring*) str{
 nslog(@"%@",str);
}
- (void)twoclick{
 nsthread* mythread = [[nsthread alloc] initwithtarget:self
             selector:@selector(dosomething:)
             object:@"twoclick"];
 [mythread start];
}

nsoperation适合需要复杂的线程调度的方法，然后它默认是使用主线程不会创建子线程

- (void)threeclick{
 // 1.创建nsinvocationoperation对象
 nsinvocationoperation *op = [[nsinvocationoperation alloc] initwithtarget:self selector:@selector(run) object:nil];
 // 2.调用start方法开始执行操作
 [op start];
}
- (void)run
{
 nslog(@"------%@", [nsthread currentthread]);
}
- (void)fourclick{
 nsblockoperation *op = [nsblockoperation blockoperationwithblock:^{
  // 在主线程
  nslog(@"1------%@", [nsthread currentthread]);
 }];
 // 添加额外的任务(在子线程执行)
 [op addexecutionblock:^{
  nslog(@"2------%@", [nsthread currentthread]);
 }];
 [op addexecutionblock:^{
  nslog(@"3------%@", [nsthread currentthread]);
 }];
 [op addexecutionblock:^{
  nslog(@"4------%@", [nsthread currentthread]);
 }];
 [op start];

}

以上这篇ios nsthread和nsoperation的基本使用详解就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。