gcd异步多线程操作使用流程,一般在子线程中处理数据,主线程更新界面
static dispatch_queue_t loadDealersQueue = NULL; if (!loadDealersQueue) { loadDealersQueue = dispatch_queue_create("com.geelycar.loadactivity.loaddealersqueue", NULL); } dispatch_async(loadDealersQueue, ^{ @autoreleasepool { //Data processing dispatch_async(dispatch_get_main_queue(), ^{ //Update Interface }); } });
今天又张见识了,看下如下的子线程与主线程的调用
static dispatch_queue_t searchQueue = NULL; if( !searchQueue ) searchQueue = dispatch_queue_create("com.moneytree.searchqueue", NULL);//调度队列
//异步运行 dispatch_async(searchQueue, ^{ @autoreleasepool {//ARC模式下自动释放池的写法
//数据处理放在队列中 NSArray *resultData = [[NSArray alloc] initWithArray:[[MTStockManage sharedInstance] stockListMatchingSearchText:searchText fromArray:self.stockList]]; self.stockList = resultData; [self setTableDataSource:nil]; if (resultData.count > SHOW_STOCK_NUMBER) { NSRange range = NSMakeRange(0, SHOW_STOCK_NUMBER); [self setTableDataSource:[resultData subarrayWithRange:range]]; }else { [self setTableDataSource:resultData]; } dispatch_async(dispatch_get_main_queue(), ^{//返回主界面 [self.dataResultTable reloadData]; //主线程中刷新UI }); } });