Electronic chart data automatic scheduling method based on dynamic loading

The development of a convenient and efficient electronic chart display and information system has great value in modern navigation. The invention relates to an electronic chart data automatic scheduling method based on dynamic loading. An electronic chart data automatic scheduling method based on an intelligent caching strategy is developed based on a multi-thread and memory management technology. Starting a nautical chart data automatic scheduling thread, traversing the nautical chart data list mMapsCache, and preferentially loading and displaying nautical chart data in a screen range; traversing the nautical chart data list mMapsCache, and calculating nautical chart data loading when the current nautical chart is in the 3 * 3 area of the screen range and is not in the screen range. The system can intelligently manage caches according to actual requirements and memory resource conditions, preferentially reserve detailed chart data of current and adjacent areas, and meanwhile timely release long-distance or l