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並前往https://books.google.com.tw/books?id=WLrAqVo4HzcC&pg=PA145&lpg=PA145&dq=getactivity&source=bl&ots=b7Ix9Ec8pi&sig=ACfU3U0C5FFrZDxjHTZCM9MuDOZKpSxLnw&hl=zh-TW&sa=X&ved=2ahUKEwjR_IvGndr0AhWvl4sKHaDdDoAQ6AF6BQivAhAD

Beginning Android Tablet Application Development

makeText(getActivity(), “Tracking turned on”, Toast.LENGTH_LONG).show(); mainActivity.TrackingUsingGPS(true); mainActivity.TrackingUsingCellularWiFi(true); ...

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