<强> 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:自我withObject: @“oneClick”);
}
- (void) doSomething (NSString *): str {
NSLog (@ % @, str);
}
- (void) twoClick {
NSThread * myThread=[[NSThread alloc] initWithTarget:自我
选择器:@ selector (doSomething:)
对象:@“twoClick”);
(myThread开始);
}
<强> 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:自我选择器:@ selector(运行)对象:nil);//2 .调用开始方法开始执行操作
(op开始);
}
- (void)运行
{
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开始);
}
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。
