获取位置(LocationManager).md

获取位置(LocationManager)

1. 需要申请权限

   <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
   <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

2. 代码

   public class TestgpsActivity extends Activity {
   	private LocationManager lm;
   	private MyListener listener;
   
   	@Override
   	public void onCreate(Bundle savedInstanceState) {
   		super.onCreate(savedInstanceState);
   		setContentView(R.layout.main);
   		lm = (LocationManager) getSystemService(LOCATION_SERVICE);
   
   		Criteria criteria = new Criteria();
   		criteria.setAccuracy(Criteria.ACCURACY_FINE);
   		criteria.setCostAllowed(true);
   		criteria.setPowerRequirement(Criteria.POWER_HIGH);
   		criteria.setSpeedRequired(true);
   		String provider = lm.getBestProvider(criteria, true);
   		//第一个参数 位置提供者 第二个参数 最短更新时间 第三参数 最短的更新的距离
   		listener = new MyListener();
   		lm.requestLocationUpdates(provider, 0, 0, listener);
   
   	}
   	@Override
   	protected void onDestroy() {
   		lm.removeUpdates(listener);
   		super.onDestroy();
   	}
   
   	private class MyListener implements LocationListener{
   
   		/**
   		 * 当位置改变的时候
   		 */
   		@Override
   		public void onLocationChanged(Location location) {
   			float accuracy = location.getAccuracy();
   			double wlong = location.getLatitude(); //纬度
   			double jlong = location.getLongitude(); //经度
   
   			TextView tv = new TextView(getApplicationContext());
   			tv.setText("经度:"+jlong+"\n"+"纬度:"+wlong+"\n"+ accuracy);
   			setContentView(tv);
   
   		}
   		/**
   		 * 某一个位置提供者的状态发生改变的时候调用的方法
   		 */
   		@Override
   		public void onStatusChanged(String provider, int status, Bundle extras) {
   
   		}
   
   		@Override
   		public void onProviderEnabled(String provider) {
   
   		}
   
   		@Override
   		public void onProviderDisabled(String provider) {
   
   		}
   	}
   }

---

• 邮箱 ：charon.chui@gmail.com
• Good Luck!