iOS 停止子线程Runloop
2019-03-18 本文已影响0人
言霏
- (IBAction)startThread:(UIButton*)sender {
self.shouldKeepRunning = YES;
self.thread = [[NSThread alloc] initWithTarget:self selector:@selector(runNow) object:nil];
[self.threadstart];
}
- (void)runNow {
self.timer = [NSTimer timerWithTimeInterval:1.0 repeats:YES block:^(NSTimer * _Nonnull timer) {
NSLog(@"timer fire");
}];
[[NSRunLoop currentRunLoop] addTimer:self.timer forMode:(NSDefaultRunLoopMode)];
NSRunLoop *theRL = [NSRunLoop currentRunLoop];
while (self.shouldKeepRunning && [theRL runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]]);
}
- (IBAction)stopThread:(UIButton*)sender {
if (self.thread && !self.thread.isFinished) {
[self performSelector:@selector(_realStopHeartBeat) onThread:self.thread withObject:nil waitUntilDone:YES];
[self.threadcancel];
}
}
- (void)_realStopHeartBeat {
if(self.timer) {
[self.timerinvalidate];
self.timer=nil;
}
CFRunLoopStop(CFRunLoopGetCurrent());
self.shouldKeepRunning = NO;
}
或者
- (IBAction)startThread:(UIButton *)sender {
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
self.shouldKeepRunning = YES;
self.thread = [NSThread currentThread];
self.timer = [NSTimer timerWithTimeInterval:1.0 repeats:YES block:^(NSTimer * _Nonnull timer) {
NSLog(@"timer fire");
}];
[[NSRunLoop currentRunLoop] addTimer:self.timer forMode:(NSDefaultRunLoopMode)];
NSRunLoop *theRL = [NSRunLoop currentRunLoop];
while (self.shouldKeepRunning && [theRL runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]]);
});
}
- (IBAction)stopThread:(UIButton *)sender {
if (self.thread && !self.thread.isFinished) {
[self performSelector:@selector(_realStopHeartBeat) onThread:self.thread withObject:nil waitUntilDone:YES];
[self.thread cancel];
}
}
- (void)_realStopHeartBeat {
if (self.timer) {
[self.timer invalidate];
self.timer = nil;
}
CFRunLoopStop(CFRunLoopGetCurrent());
self.shouldKeepRunning = NO;
}
