Android開發，GPS獲取實時時間並轉為北京時間，定位資訊，海拔高度，並進行顯示
阿新 • • 發佈：2019-01-08
在轉載的基礎上增加一些內容，主要是時間的轉換所以這裡直接先把重點列出來：
(GPS時間轉為本地時間)：
@SuppressLint("SimpleDateFormat") private static String getGpsLoaalTime(long gpsTime){ Calendar calendar = Calendar.getInstance(); calendar.setTimeInMillis(gpsTime); SimpleDateFormat df = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss"); String datestring = df.format(calendar.getTime()); return datestring; }
上述程式碼需要載入Java的包支援，用eclipse會自動載入的，然後是把獲取的GPS資料顯示在安卓app上，程式碼如下：
private void updateView(Location location) { if (location != null) { editText.setText("裝置位置資訊\n\n時間："); editText.append(""+getGpsLoaalTime(location.getTime()); editText.append("\n經度："); editText.append(String.valueOf(location.getLongitude())); editText.append("\n緯度："); editText.append(String.valueOf(location.getLatitude())); editText.append("\n海拔："); editText.append(String.valueOf(location.getAltitude())); } else { // 清空EditText物件 editText.getEditableText().clear(); } }
上面資料的裡獲取時間的那一項裡是轉換為北京時間，單位是秒，其他的程式碼，別人有講的很詳細，請參考：
點選開啟連結http://blog.csdn.net/jason0539/article/details/12047963
當然這裡把整體框架也寫出來：
這是一個完整的程式，稍微加工一下就可以用了。package com.hq.gpstest; import java.text.SimpleDateFormat; import java.util.Calendar; import android.annotation.SuppressLint; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.location.Criteria; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.location.LocationProvider; import android.os.Bundle; import android.provider.Settings; import android.util.Log; import android.widget.EditText; import android.widget.Toast; public class GpsActivity extends Activity { private EditText editText; private LocationManager lm; private static final String TAG = "GpsActivity"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_gps); setTitle("GPS離線定位"); editText = (EditText) findViewById(R.id.editText); lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE); // 判斷GPS是否正常啟動 if (!lm.isProviderEnabled(LocationManager.GPS_PROVIDER)) { Toast.makeText(this, "請開啟GPS導航...", Toast.LENGTH_SHORT).show(); // 返回開啟GPS導航設定介面 Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); startActivityForResult(intent, 0); return; } // 為獲取地理位置資訊時設定查詢條件 String bestProvider = lm.getBestProvider(getCriteria(), true); Location location = lm.getLastKnownLocation(bestProvider); updateView(location); lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 1, locationListener); } // 位置監聽 private LocationListener locationListener = new LocationListener() { /** * 位置資訊變化時觸發 */ public void onLocationChanged(Location location) { updateView(location); Log.i(TAG, "時間：" + location.getTime()); Log.i(TAG, "經度：" + location.getLongitude()); Log.i(TAG, "緯度：" + location.getLatitude()); Log.i(TAG, "海拔：" + location.getAltitude()); } @Override public void onStatusChanged(String provider, int status, Bundle extras) { // TODO Auto-generated method stub switch (status) { // GPS狀態為可見時 case LocationProvider.AVAILABLE: Log.i(TAG, "當前GPS狀態為可見狀態"); break; // GPS狀態為服務區外時 case LocationProvider.OUT_OF_SERVICE: Log.i(TAG, "當前GPS狀態為服務區外狀態"); break; // GPS狀態為暫停服務時 case LocationProvider.TEMPORARILY_UNAVAILABLE: Log.i(TAG, "當前GPS狀態為暫停服務狀態"); break; } } @Override public void onProviderEnabled(String provider) { // TODO Auto-generated method stub Location location = lm.getLastKnownLocation(provider); updateView(location); } @Override public void onProviderDisabled(String provider) { // TODO Auto-generated method stub updateView(null); } }; private void updateView(Location location) { if (location != null) { editText.setText("裝置位置資訊\n\n時間："); editText.append(""+getGpsLoaalTime(location.getTime()+(long)57647030)); editText.append("\n經度："); editText.append(String.valueOf(location.getLongitude())); editText.append("\n緯度："); editText.append(String.valueOf(location.getLatitude())); editText.append("\n海拔："); editText.append(String.valueOf(location.getAltitude())); } else { // 清空EditText物件 editText.getEditableText().clear(); } } private Criteria getCriteria() { Criteria criteria = new Criteria(); // 設定定位精確度 Criteria.ACCURACY_COARSE比較粗略，Criteria.ACCURACY_FINE則比較精細 criteria.setAccuracy(Criteria.ACCURACY_FINE); // 設定是否要求速度 criteria.setSpeedRequired(false); // 設定是否允許運營商收費 criteria.setCostAllowed(false); // 設定是否需要方位資訊 criteria.setBearingRequired(false); // 設定是否需要海拔資訊 criteria.setAltitudeRequired(false); // 設定對電源的需求 criteria.setPowerRequirement(Criteria.POWER_LOW); return criteria; } @SuppressLint("SimpleDateFormat") private static String getGpsLoaalTime(long gpsTime){ Calendar calendar = Calendar.getInstance(); calendar.setTimeInMillis(gpsTime); SimpleDateFormat df = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss"); String datestring = df.format(calendar.getTime()); return datestring; } @Override protected void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); } }