iOS - 计时器调用问题

Question

我想在计时器到期时调用一个方法，但该方法没有被调用。不知道出了什么问题。有什么建议吗？

被调用:

- (void)messageSendingReply:(id)messageID
{
    //Do something.
}

调用上面的:

- (void)sendingMessageTimer_Start:(int64_t)sendingMsgID Time:(NSTimeInterval)replyDelay {

    NSMethodSignature *sig = [self methodSignatureForSelector:@selector(messageSendingReply:)];


    if (sig)
    {

        NSInvocation* invo = [NSInvocation invocationWithMethodSignature:sig];
        [invo setTarget:self];
        [invo setSelector:@selector(messageSendingReply:)];
        id obj= [NSNumber numberWithLongLong:sendingMsgID];
        [invo setArgument:&obj atIndex:0];
        [invo retainArguments];

        [self.replyTimerDic setValue:[NSTimer scheduledTimerWithTimeInterval:replyDelay invocation:invo repeats:NO] forKey:[NSString stringWithFormat:@"%qi",sendingMsgID]];

    }

}

Answer 1

我通过在当前运行循环上添加计时器并运行来解决它。谢谢。

if (sig)
{
    NSInvocation* invo = [NSInvocation invocationWithMethodSignature:sig];
    [invo setTarget:self];
    [invo setSelector:@selector(messageSendingReply:)];
    id obj= [NSNumber numberWithLongLong:sendingMsgID];
    [invo setArgument:&obj atIndex:0];
    [invo retainArguments];

    NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:replyDelay invocation:invo repeats:NO];

    [self.replyTimerDic setValue:timer forKey:[NSString stringWithFormat:@"%qi",sendingMsgID]];

    NSRunLoop* runLoop = [NSRunLoop currentRunLoop];
    [runLoop addTimer:timer forMode:NSRunLoopCommonModes];
    [runLoop run];
}