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{
[NSThreaddetachNewThreadSelector:@selector(doSomething:)toTarget:selfwithObject:@"oneClick"];
}
-(void)doSomething:(NSString*)str{
NSLog(@"%@",str);
}
-(void)twoClick{
NSThread*myThread=[[NSThreadalloc]initWithTarget:self
selector:@selector(doSomething:)
object:@"twoClick"];
[myThreadstart];
}
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=[[NSInvocationOperationalloc]initWithTarget:selfselector:@selector(run)object:nil];
//2.调用start方法开始执行操作
[opstart];
}
-(void)run
{
NSLog(@"------%@",[NSThreadcurrentThread]);
}
-(void)fourClick{
NSBlockOperation*op=[NSBlockOperationblockOperationWithBlock:^{
//在主线程
NSLog(@"1------%@",[NSThreadcurrentThread]);
}];
//添加额外的任务(在子线程执行)
[opaddExecutionBlock:^{
NSLog(@"2------%@",[NSThreadcurrentThread]);
}];
[opaddExecutionBlock:^{
NSLog(@"3------%@",[NSThreadcurrentThread]);
}];
[opaddExecutionBlock:^{
NSLog(@"4------%@",[NSThreadcurrentThread]);
}];
[opstart];
}
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