Question

如果计时器过期，我想调用一个方法，但是不会调用该方法。不确定出了什么问题。有什么建议吗？

被召唤：

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

调用上述内容：

- (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中添加计时器并运行来解决它。感谢。

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];
}

iOS - 计时器调用问题

1 个答案: