定位(3:)追踪用户的位置

追踪用户的位置：得到用户移动的轨迹

 

注册权限：

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

 

 

import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {
	private Button button = null;
	private LocationManager locationManager = null;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        button = (Button)findViewById(R.id.button);
        //创建LocationManager对象
        locationManager = (LocationManager)MainActivity.this.getSystemService(Context.LOCATION_SERVICE);
        button.setOnClickListener(new OnClickListener(){

			@Override
			public void onClick(View v) {
				//绑定监听器，第二个参数表示更新的最小时间（毫秒）；第三个参数表示更新的最小距离（米）
				locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5000, 5000, new TestLocationListener());
			}
        	
        });
    }
    private class TestLocationListener implements LocationListener{
    	
    	//位置变化时调用
		@Override
		public void onLocationChanged(Location location) {
			//经度
			System.out.println(location.getLongitude());
			//纬度
			System.out.println(location.getLatitude());
		}
		
		@Override
		public void onStatusChanged(String provider, int status, Bundle extras) {
			// TODO Auto-generated method stub
			
		}

		@Override
		public void onProviderEnabled(String provider) {
			// TODO Auto-generated method stub
			
		}

		@Override
		public void onProviderDisabled(String provider) {
			// TODO Auto-generated method stub
			
		}
    	
    }
}

 

 

当点击按钮的时候无反应，因为要距离大于5000米时才会调用onLocationChange函数打印经纬度。

在DDMS中修改经纬度，然后点击按钮，则会打印出当前位置：