Android GPS獲取當前經緯度坐標

APP中可能會遇到一種需求，就是將當前所在位置的坐標傳到服務器上，今天我提供三種途徑去獲取經緯度坐標信息，第一種是通過Android API來實現，第二種通過百度地圖API來實現，第三種通過天地圖API來實現。

第一種方法（Android API實現），廢話不多說，上代碼。

MainActivity代碼如下：

public class MainActivity extends Activity {
	private static final String TAG = MainActivity.class.getSimpleName();
	private double latitude = 0.0;
	private double longitude = 0.0;
	private TextView info;
	private LocationManager locationManager;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		info = (TextView) findViewById(R.id.tv);
		locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
		if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
			getLocation();
			//gps已打開
		} else {
			toggleGPS();
			new Handler() {
			}.postDelayed(new Runnable() {
				@Override
				public void run() {
					getLocation();
				}
			}, 2000);

		}
	}

	private void toggleGPS() {
		Intent gpsIntent = new Intent();
		gpsIntent.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");
		gpsIntent.addCategory("android.intent.category.ALTERNATIVE");
		gpsIntent.setData(Uri.parse("custom:3"));
		try {
			PendingIntent.getBroadcast(this, 0, gpsIntent, 0).send();
		} catch (CanceledException e) {
			e.printStackTrace();
			locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 0, locationListener);
			Location location1 = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
			if (location1 != null) {
				latitude = location1.getLatitude(); // 經度
				longitude = location1.getLongitude(); // 緯度
			}
		}
	}

	private void getLocation() {
		Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
		if (location != null) {
			latitude = location.getLatitude();
			longitude = location.getLongitude();
		} else {

			locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 0, locationListener);
		}
		info.setText("緯度：" + latitude + "\n" + "經度：" + longitude);
	}

	LocationListener locationListener = new LocationListener() {
		// Provider的狀態在可用、暫時不可用和無服務三個狀態直接切換時觸發此函數
		@Override
		public void onStatusChanged(String provider, int status, Bundle extras) {
		}

		// Provider被enable時觸發此函數，比如GPS被打開
		@Override
		public void onProviderEnabled(String provider) {
			Log.e(TAG, provider);
		}

		// Provider被disable時觸發此函數，比如GPS被關閉
		@Override
		public void onProviderDisabled(String provider) {
			Log.e(TAG, provider);
		}

		// 當坐標改變時觸發此函數，如果Provider傳進相同的坐標，它就不會被觸發
		@Override
		public void onLocationChanged(Location location) {
			if (location != null) {
				Log.e("Map", "Location changed : Lat: " + location.getLatitude() + " Lng: " + location.getLongitude());
				latitude = location.getLatitude(); // 經度
				longitude = location.getLongitude(); // 緯度
			}
		}
	};

	/*
	 * 
	 * 打開和關閉gps第二種方法
	 * private void openGPSSettings() {
		//獲取GPS現在的狀態（打開或是關閉狀態）
		boolean gpsEnabled = Settings.Secure.isLocationProviderEnabled(getContentResolver(), LocationManager.GPS_PROVIDER);
		if (gpsEnabled) {
			//關閉GPS
			Settings.Secure.setLocationProviderEnabled(getContentResolver(), LocationManager.GPS_PROVIDER, false);
		} else {
			//打開GPS  
			Settings.Secure.setLocationProviderEnabled(getContentResolver(), LocationManager.GPS_PROVIDER, true);
		}
	}*/
}

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第三種方法（天地圖API實現）

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