#define kMsg1 100#define kMsg2 101- (void)viewDidLoad {
[super viewDidLoad];
//1. 创建主线程的port // 子线程通过此端口发送消息给主线程 NSPort *myPort = [NSMachPort port];
//2. 设置port的代理回调对象 myPort.delegate = self;
//3. 把port加入runloop，接收port消息 [[NSRunLoop currentRunLoop] addPort:myPort forMode:NSDefaultRunLoopMode];
NSLog(@"---myport %@", myPort);
//4. 启动次线程,并传入主线程的port MyWorkerClass *work = [[MyWorkerClass alloc] init];
[NSThread detachNewThreadSelector:@selector(launchThreadWithPort:)
toTarget:work
withObject:myPort];
}
- (void)handlePortMessage:(NSMessagePort*)message{
NSLog(@"接到子线程传递的消息！%@",message);
//1. 消息id NSUInteger msgId = [[message valueForKeyPath:@"msgid"] integerValue];
//2. 当前主线程的port NSPort *localPort = [message valueForKeyPath:@"localPort"];
//3. 接收到消息的port（来自其他线程） NSPort *remotePort = [message valueForKeyPath:@"remotePort"];
if (msgId == kMsg1)
{
//向子线的port发送消息 [remotePort sendBeforeDate:[NSDate date]
msgid:kMsg2
components:nil from:localPort
reserved:0];
} else if (msgId == kMsg2){
NSLog(@"操作2....\n");
}
}
MyWorkerClass.h：
#import "MyWorkerClass.h"@interface MyWorkerClass() {
NSPort *remotePort;
NSPort *myPort;
}@end#define kMsg1 100#define kMsg2 101@implementation MyWorkerClass
- (void)launchThreadWithPort:(NSPort *)port {
@autoreleasepool {
//1. 保存主线程传入的port remotePort = port;
//2. 设置子线程名字 [[NSThread currentThread] setName:@"MyWorkerClassThread"];
//3. 开启runloop [[NSRunLoop currentRunLoop] run];
//4. 创建自己port myPort = [NSPort port];
//5. myPort.delegate = self;
//6. 将自己的port添加到runloop //作用1、防止runloop执行完毕之后推出 //作用2、接收主线程发送过来的port消息 [[NSRunLoop currentRunLoop] addPort:myPort forMode:NSDefaultRunLoopMode];
//7. 完成向主线程port发送消息 [self sendPortMessage];
}
}/**
* 完成向主线程发送port消息
*/- (void)sendPortMessage {
NSMutableArray *array =[[NSMutableArray alloc]initWithArray:@[@"1",@"2"]];
//发送消息到主线程，操作1 [remotePort sendBeforeDate:[NSDate date]
msgid:kMsg1
components:array
from:myPort
reserved:0];
//发送消息到主线程，操作2 // [remotePort sendBeforeDate:[NSDate date] // msgid:kMsg2 // components:nil // from:myPort // reserved:0];}
#pragma mark - NSPortDelegate/**
* 接收到主线程port消息
*/- (void)handlePortMessage:(NSPortMessage *)message
{
NSLog(@"接收到父线程的消息...\n");
// unsigned int msgid = [message msgid]; // NSPort* distantPort = nil; // // if (msgid == kCheckinMessage) // { // distantPort = [message sendPort]; // // } // else if(msgid == kExitMessage) // { // CFRunLoopStop((__bridge CFRunLoopRef)[NSRunLoop currentRunLoop]); // }}@end