一个 Objective-C 计时器，限制触发时间范围。如果它在 min 之前被取消，它将等待 min。如果它在 max 之后被取消，将在 max 时触发。
由 Firehose 的 Mysterious Trousers 开发。
@implementation FMRootWindowView {
MTTimer *_durationTimer;
}
#pragma mark - Public
- (void)displayLoadingWithMessage:(NSString *)message
{
...
// It's kind of jolting to see a loading message pop up and disappear in
// just a few miliseconds, in the case of a request that loads very quickly,
// so we constrain the timer to not fire until at least 2 seconds, even if
// `done` is called before that.
_durationTimer = [MTTimer timerThatMustLastAtLeast:2 untilPerformingBlock:^{
// do whatever you do when it's done
}];
...
}
- (void)displaySuccessWithMessage:(NSString *)errorMessage
{
...
// We want a the success message to show for at least 2 seconds, but we
// don't want it showing more than 4.
_durationTimer = [MTTimer timerThatMustLastAtLeast:2 atMost:4 beforePerformingBlock:^{
// do whatever you do when it's done
}];
...
}
- (void)displayErrorWithMessage:(NSString *)errorMessage
{
...
// We want a the error message to show for at least 30 seconds, to make
// sure the user sees it.
_durationTimer = [MTTimer timerThatMustLastAtLeast:30 atMost:35 beforePerformingBlock:^{
[self animateUp];
}];
...
}
- (void)dismissStatus
{
// This is called whenever your external operation is complete. If `done` is calle BEFORE
// the min seconds has been reached, the completion block will not fire until min is reached.
// If you call this AFTER max, the completion block will have already fired when max was reached.
[_durationTimer done];
}
@end
请在提交 pull request 之前更新和运行测试。谢谢。