我有一个显示 GPS 经度和纬度的应用程序。如果我使用 LocationManager.NETWORK_PROVIDER 它可以显示网络的经度和纬度。但是当我使用 LocationManager.GPS_PROVIDER 时,它不显示任何内容。但是当我使用谷歌地图时,它可以指出我在哪里。谷歌地图如何获取我的位置?我需要获取设备的经度和纬度。
这是我的代码
import android.location.LocationManager;
import android.location.Location;
import android.location.LocationListener;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class Main extends Activity implements OnClickListener{
double glat;
double glng;
LocationListener glocListener;
TextView longitudetv;
TextView latitudetv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView tv = (TextView) findViewById(R.id.mytextview);
tv.setVisibility(View.GONE);
longitudetv = (TextView) findViewById(R.id.textView3);
longitudetv.setVisibility(View.GONE);
latitudetv = (TextView) findViewById(R.id.textView4);
latitudetv.setVisibility(View.GONE);
Button b = (Button) findViewById(R.id.button1);
b.setOnClickListener(this);
}
@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;
}
//This is for Lat lng which is determine by your device GPS
public class MyLocationListenerGPS implements LocationListener
{
@Override
public void onLocationChanged(Location loc)
{
glat = loc.getLatitude();
glng = loc.getLongitude();
//Setting the GPS Lat, Lng into the textView
longitudetv.setText("" + glng);
latitudetv.setText("" + glat);
}
@Override
public void onProviderDisabled(String provider)
{
}
@Override
public void onProviderEnabled(String provider)
{
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras)
{
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(v.getId()==R.id.button1){
LocationManager locman = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
TextView tv = (TextView) findViewById(R.id.mytextview);
tv.setVisibility(View.VISIBLE);
if(locman.isProviderEnabled(LocationManager.GPS_PROVIDER)){
tv.setText("Started!");
latitudetv.setVisibility(View.VISIBLE);
longitudetv.setVisibility(View.VISIBLE);
locman = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
glocListener = new MyLocationListenerGPS();
locman.requestLocationUpdates(LocationManager.GPS_PROVIDER,
1000 * 1, // 1 Sec
0, // 0 meter
glocListener);
}
else{
tv.setText("There is no GPS Connection");
Toast.makeText( getApplicationContext(), "GPS is Disabled.Please enable GPS", Toast.LENGTH_SHORT ).show();
}
}
}
}
我的清单文件
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.willardcuizon.adaptivedgps"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="10"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" android:debuggable="false">
<activity
android:name="com.willardcuizon.adaptivedgps.Main"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>