(Abstract: Aiming at the wide application of intelligent terminal devices and the increasing coverage of WiFi signals, a GPS navigation application system based on Android operating system, WiFi and GPS technology is designed and developed. Detailed analysis and research. The functional modules realized by the system mainly include graphical interface module, GPS positioning module, WiFi scanning module, mobile phone connection WiFi network module and socket! Communication and database management module. With this system, mobile terminals based on anmdlroid system can easily query their location and obtain various location-based services——)
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