(转)在新线程中使用NSTimer

(转)在新线程中使用NSTimer

转自:NStimer 在滚动ScrollView的时候停止,在新线程中使用NSTimer 

 1 方法一：
 2 
 3 -(void) viewDidLoad{
 4 [self performSelectorInBackground:@selector(call1) withObject:nil];
 5 }
 6 
 7 -(void) call1{
 8 timer1 = [NSTimer scheduledTimerWithTimeInterval:3.0 target:self selector:@selector(doSomething) userInfo:nil repeats:NO];
 9 
10 [[NSRunLoop currentRunLoop] addTimer:timer1 forMode:NSRunLoopCommonModes];
11 
12 }
13 
14 -(void) call2{
15 // do something
16 timer1 invalidate];
17 timer1 = nil;
18 }
19 
20 方法二：
21 
22 - (void)viewDidAppear:(BOOL)animated {
23     NSThread* timerThread = [[NSThread alloc] initWithTarget:self selector:@selector(timerStart) object:nil];
24     [timerThread start]; 
25 }
26 
27 -(void)timerStart
28 {
29     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
30     NSRunLoop* runLoop = [NSRunLoop currentRunLoop];
31     timer = [[NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(method) userInfo:nil repeats:YES] retain];//一定要retain，不然timerStart执行完后，NSTimer就被释放了。
32     [runLoop run];
33     [pool release];
34 }
35 
36 - (void)viewDidDisappear:(BOOL)animated {
37     [super viewDidDisappear:animated];
38     [timer invalidate];
39 }
40 
41 方法三：
42 
43 timer = [NSTimer timerWithTimeInterval:5.0 target:self selector:@selector(SendHeartBeat) userInfo:nil repeats:YES];
44 
45  [[NSRunLoop mainRunLoop] addTimer:heartTimer forMode:NSDefaultRunLoopMode];

posted on 2012-07-31 16:18  east520  阅读(175)  评论(0)    收藏  举报

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