android gps开发(mrGPS源代码)

file:AndroidManifest.xml

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

file:main.java

package com.mrsoft.mrgps.app.mr;import android.app.Activity;import android.app.ActivityManager;import android.app.AlertDialog;import android.app.AlertDialog.Builder;import android.content.Context;import android.content.DialogInterface;import android.content.DialogInterface.OnClickListener;import android.location.Criteria;import android.location.Location;import android.location.LocationListener;import android.location.LocationManager;import android.os.Bundle;import android.view.KeyEvent;import android.view.Menu;import android.view.MenuItem;import android.widget.TextView;import android.widget.Toast;public class main extends Activity {private TextView tv;private LocationManager lm;private Criteria criteria;private Location location;    private final static int MENU_ABOUT = Menu.FIRST;      private final static int MENU_EXIT = Menu.FIRST+1;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                tv = (TextView)findViewById(R.id.tv);                lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);                if (!lm.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER))        {        Toast.makeText(this, "GPS已关闭,请手动开启GPS后再试！", Toast.LENGTH_SHORT).show();        return;        }        else        {        Toast.makeText(this, "GPS定位中...", Toast.LENGTH_SHORT).show();        }                criteria = new Criteria();        criteria.setAccuracy(Criteria.ACCURACY_FINE);// 设置精确度        criteria.setAltitudeRequired(true);// 设置请求海拔        criteria.setBearingRequired(true);// 设置请求方位        criteria.setCostAllowed(true);// 设置允许运营商收费        criteria.setPowerRequirement(Criteria.POWER_LOW); // 低功耗                String provider = lm.getBestProvider(criteria, true);        location = lm.getLastKnownLocation(provider);        newLocalGPS(location);        // 监听1秒一次 忽略位置变化        lm.requestLocationUpdates(provider, 1*1000, 0, new locationListener());    }        class locationListener implements LocationListener    {@Overridepublic void onLocationChanged(Location location) {// TODO Auto-generated method stubnewLocalGPS(location);}@Overridepublic void onProviderDisabled(String provider) {// TODO Auto-generated method stubnewLocalGPS(null);}@Overridepublic void onProviderEnabled(String provider) {// TODO Auto-generated method stub}@Overridepublic void onStatusChanged(String provider, int status, Bundle extras) {// TODO Auto-generated method stub}        }        private void newLocalGPS(Location location)    {    if (location!=null)    {    double latitude = location.getLatitude(); //精度    double longitude = location.getLongitude(); // 纬度    double speed = location.getSpeed();// 速度    double altitude = location.getAltitude();// 海拔    double bearing = location.getBearing();// 方位    tv.setText("精度"+latitude+'\n'+       "纬度"+longitude+'\n'+       "速度"+speed+"m/s"+'\n'+       "海拔"+altitude+"m"+'\n'+       "方位"+bearing+'\n');    }    else    {    // 未获取地理信息位置    tv.setText("地理信息位置未知或正在获取地理信息位置中...");    }    }        @Overridepublic boolean onCreateOptionsMenu(Menu menu) {// TODO Auto-generated method stub        menu.add(0, MENU_ABOUT, 1, "关于");          menu.add(0, MENU_EXIT, 2, "退出");return super.onCreateOptionsMenu(menu);}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {// TODO Auto-generated method stubswitch (item.getItemId()){case MENU_ABOUT: AlertDialog.Builder bd = new Builder(main.this);              bd.setMessage("mrGPS.apk\n版本:1.0\n作者:mrandexe");              bd.setTitle("关于");              bd.setPositiveButton("确认", new OnClickListener(){                  @Override                  public void onClick(DialogInterface arg0, int arg1) {                      // TODO Auto-generated method stub                      arg0.dismiss();                  }              });              bd.create().show(); break;case MENU_EXIT:exit();break;}return super.onOptionsItemSelected(item);}@Override      public boolean onKeyDown(int keyCode, KeyEvent event) {          // TODO Auto-generated method stub          if (keyCode==KeyEvent.KEYCODE_BACK && event.getRepeatCount()==0)          {              exit();              return true;          }          return super.onKeyDown(keyCode, event);      }         private void exit()      {       AlertDialog.Builder builder = new Builder(main.this);           builder.setMessage("确认退出吗？");           builder.setTitle("提示");           builder.setPositiveButton("确认", new OnClickListener(){               @Override               public void onClick(DialogInterface arg0, int arg1) {                   // TODO Auto-generated method stub                   arg0.dismiss();                 ActivityManager actMgr = (ActivityManager)getSystemService(ACTIVITY_SERVICE);                   actMgr.restartPackage(getPackageName());             }           });           builder.setNegativeButton("取消", new OnClickListener(){               @Override               public void onClick(DialogInterface dialog, int which) {                   // TODO Auto-generated method stub                   dialog.dismiss();               }           });           builder.create().show();             }}

file:main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="fill_parent"  android:layout_height="fill_parent">    <TextView android:text="TextView" android:layout_width="wrap_content" android:id="@+id/tv" android:layout_height="wrap_content"></TextView></LinearLayout>