iosGCD多線程之建立多線程

iosGCD多線程之建立多線程

喔盡量分成一小節一小節的寫。這樣也難讓大家看的清楚些。我這裡有三種建立線程的方法。代碼如下

 

 

#import "ViewController.h"

 

@interface ViewController ()

 

@end

 

@implementation ViewController

 

- (void)viewDidLoad {

[super viewDidLoad];

}

//當使用者點擊螢幕，執行線程

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

{

[self testThread];

}

 

-(void)testThread

{

 

//取到當前線程,在這裡就是主線程

NSThread *curThread = [NSThread currentThread];

NSLog(@"curThread = %@",curThread);

 

// //取到主線程的方法

// NSThread *mainThread = [NSThread mainThread];

// NSLog(@"mainThread = %@",mainThread);

//

 

[self createThread1];

 

}

 

 

-(void)createThread1

{

//一個NSThread對象就是一個線程

// 參數1，2 : 指定線程中由參數1調用參數2的方法

// 參數3 : 給參數2指定的方法傳遞實參

NSThread *thread = [[NSThread alloc]initWithTarget:self selector:@selector(threadMain:) object:@"線程建立方式1"];

 

[thread setName:@"我叫二蛋"];

[thread start];

}

-(void)createThread2

{

 

[NSThread detachNewThreadSelector:@selector(threadMain:) toTarget:self withObject:@"線程建立方式2"];

 

 

}

-(void)createThread3

{

 

 

[self performSelectorInBackground:@selector(threadMain:) withObject:@"線程建立方式3"];

}

-(void)threadMain:(id)obj

{

for (int i = 0; i<1000; i++) {

NSLog(@"i = %d,obj = %@,thread = %@",i,obj,[NSThread currentThread]);

}

 

 

}

當然大家還是需要多用，就像吃飯，吃的多了還能挑刺，繼續下一篇，今天晚上3更。哈哈