iOS NSThreadGCD 线程与队列（一）
2019-11-06 09:43:18
供稿：网友
//// NSThreadVController.m// ZM_NSThreadGCD//// Created by ZM on 2015/2/9.// Copyright © 2015年ZM. All rights reserved.//#import"NSThreadVController.h"@interfaceNSThreadVController (){ UILabel *my_label;}@end@implementationNSThreadVController- (void)viewDidLoad{ [superviewDidLoad]; self.title= @"NSThreadVC"; my_label= [[UILabelalloc]initWithFrame:CGRectMake(80,80,150,60)]; my_label.backgroundColor=[UIColorcyanColor]; my_label.text=@"幸福每一天"; my_label.font=[UIFontsystemFontOfSize:15]; my_label.textAlignment=NSTextAlignmentCenter; [self.viewaddSubview:my_label]; [selfaddBtnTitle:@"开辟分线程"frame:CGRectMake(10, 200,200,35)Tag:111];}- (void)myBtnClick:(UIButton*)Btn{ NSDictionary *params = @{@"key1":@"value1", @"key2":@"value2"}; //开辟分线程 [NSThreaddetachNewThreadSelector:@selector(newThread:)toTarget:selfwithObject:params];}//分线程-(void)newThread:(NSMutableDictionary*)dic{ //创建线程 //判断BOOL量 NSThread *thread = [NSThreadcurrentThread]; BOOL isMainThread = [threadisMainThread]; NSLog(@"---> thread = %d",isMainThread); NSLog(@"---> dic = %@ /n ",dic); //创建主线程 //去网络请求获取数据请求完成 必须要回到主线程刷新数据 [selfperformSelectorOnMainThread:@selector(mainThread:)withObject:@"在主线程刷新数据"waitUntilDone:YES]; // //1.直接在开辟的线程中可以刷新数据// my_label.text = [dic objectForKey:@"key1"];//// //2.无论在分线程或者主线程中再开辟一个分线程：都不能刷新数据// [NSThread detachNewThreadSelector:@selector(againNewThread_Two:) toTarget:self withObject:@{@"labelText": @"label"} ]; }//主线程-(void)mainThread:(NSString*)str{ //1.主线程刷新数据 NSLog(@"---> str: %@",str); my_label.text= str; //2.无论在分线程或者主线程中再开辟一个分线程：都不能刷新数据// [NSThread detachNewThreadSelector:@selector(againNewThread_Two:) toTarget:self withObject:@{@"labelText": @"label"} ]; }//在线程中：再开辟一个分线程-(void)againNewThread_Two:(NSMutableDictionary*)dic{ NSString *str= [dic objectForKey:@"label"]; NSLog(@"---> my_label.text: %@ /n ",str); my_label.text= str;}@end
