ios - 这里 map iOS distanceToDestination

Question

我想知道是否有人可以帮助我在Heremap iOS SDK中获得总路线距离。根据文档，应该执行以下操作，但我只会获得无穷大的边界值，这简直就是邪恶。有人可以提供一个有效的例子吗？我正在模拟器中运行它，但这并不重要。

unsigned long long distance_ul = [NMANavigationManager sharedNavigationManager].distanceToDestination;

NMAUint64 distance_i64 = [NMANavigationManager sharedNavigationManager].distanceToDestination;

Answer 1

您的第二个用法NMAUint64 distance = [NMANavigationManager sharedNavigationManager].distanceToDestination;可以。然后，您应该自己计算距离。以下是公制的示例

- (NSString *)distanceToMetricStringFromLongValue:(NMAUint64)value {
    NSString *distanceText = @"";
    if (value < 250) {
        NMAUint64 distance = (NMAUint64)round(value / 5.0) * 5;
        if (showZeroDistance || distance > 0) {
            distanceText = [NSString stringWithFormat:@"%lld m", distance];
        }
    } else if (value < 500) {
        NMAUint64 distance = (NMAUint64)round(value / 10.0) * 10;
        if (showZeroDistance || distance > 0) {
            distanceText = [NSString stringWithFormat:@"%lld m", distance];
        }
    } else if (value < 1000) {
        NMAUint64 distance = (NMAUint64)round(value / 50.0) * 50;
        distanceText = [NSString stringWithFormat:@"%lld m", distance];
    } else {
        double distance = value / 1000.0;
        if (distance >= 10.0) {
            distanceText = [NSString stringWithFormat:@"%0.0f km", round(distance)];
        } else {
            distanceText = [NSString stringWithFormat:@"%0.1f km", distance];
        }
    }
}