Question

我已经成功实现了代码，以便Google地图在我的应用程序中有效运行。我现在正在尝试实现locationManager并输出当前位置的纬度和经度值，但它正在崩溃。

MainActivity

package com.example.androidgooglemap;

import com.google.android.gms.location.LocationListener;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;

import android.location.Location;
import android.location.LocationManager;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.app.Activity;
import android.content.Context;
import android.view.Menu;
import android.view.View;

public class MainActivity extends FragmentActivity {

public GoogleMap mMap;
LocationManager location;
private String provider;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    location = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    //mMap.setMyLocationEnabled(true);
    //mMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

/* Request updates at startup */
@Override
protected void onResume() {
    super.onResume();
    location.getLastKnownLocation(provider);
}

/* Remove the locationlistener updates when Activity is paused */
@Override
protected void onPause() {
    super.onPause();
}

public void onLocationChanged(Location location) {
    int lat = (int) (location.getLatitude());
    int lng = (int) (location.getLongitude());
    System.out.println(String.valueOf(lat));
    System.out.println(String.valueOf(lng));
}

我可以得到一些指导，因为我显然是业余爱好者！

Answer 1

确切地知道您接收的异常将有所帮助。但我的猜测是你错过了

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

在你的清单中

。

LocationManager不输出lat＆amp;多头头寸

1 个答案: