多线程总结(代码)

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(1)[NSThread detachNewThreadSelector:@selector(createTableview) toTarget:self withObject:nil];

(2)[self performSelectorInBackground:@selector(createTableview) withObject:nil];

(3)

NSThread *thread = [[NSThread alloc]initWithTarget:self selector:@selector(createTableview) object:nil];

[thread setName:@"HelloThread"];

[thread setStackSize:4 * 1024];//提供4KB的整数倍

[thread setThreadPriority:1.0f];//优先级配置,从0到1不等的浮点数,分别表示CPU在空闲时分配资源给线程执行任务的优先度,0最小,1最大.

[thread start];

(4)

NSOperation （线程队列）控制并发数

NSInvocationOperation *operation = [[NSInvocationOperation alloc]initWithTarget:self selector:@selector(createTableview) object:nil];

[operation start];//单独建立它在主线程

(5)

//GCD大中央调度中心

dispatch_queue_t main = dispatch_get_main_queue();//主队列,串行队列一个

dispatch_async(main, ^{

[self createTableview];

});

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