Create multiple threads in Objecttive-C

Create multiple threads in Objecttive-C

There are two methods to create multithreading in Objecttive-C: initWithTarget and detachNewThreadSelector.

The following two instances are used to create multi-threaded instances and support passing parameters.

 

InitWithTarget Method

 

////  main.m//  initWithTarget//  Created by exchen on 5/8/15.//  Copyright (c) 2015 exchen. All rights reserved.//#import 
 
  @interface classa : NSObject-(void)StartThread:(NSString *)str;@end@implementation classa-(void)StartThread:(NSString *)str{     sleep(3);        NSLog(str);       exit(0);}@endint main(int argc, const char * argv[]) {    @autoreleasepool {        // insert code here...        NSLog(@"Hello, World!");    }        classa *a = [[classa alloc] init];    NSThread *thread = [[NSThread alloc] initWithTarget:a selector:@selector(StartThread:) object:@"Start"];    [thread start];        sleep(5);    return 0;}
 

DetachNewThreadSelector Mode

 

////  main.m//  TestThread////  Created by exchen on 5/8/15.//  Copyright (c) 2015 exchen. All rights reserved.//#import 
 
  @interface classa : NSObject-(void)StartThread:(NSString *)str;@end@implementation classa-(void)StartThread:(NSString *)str{    NSLog(@"%@",str);    exit(0);}@endint main(int argc, const char * argv[]) {    @autoreleasepool {        // insert code here...        NSLog(@"Hello, World!");                classa *a = [[classa alloc] init];                [NSThread detachNewThreadSelector:@selector(StartThread:) toTarget:a withObject:@"Start"];                sleep(5);            }    return 0;}