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I'm getting a callback with latitude and longitude, how can I best calculate "current speed", and other derived values?
(I think this question is platform independent, but I happen to be coding for a Nexus One). About \"current speed\": I\'m getting a callback every second or so telling me what my current latitude and[详细]
2022-12-17 14:49 分类：问答
加载中,请稍侯......