Android GPS 自动开启

1.第一种方法

private void toggleGPS() {

            Intent gpsIntent = new Intent();

            gpsIntent.setClassName("com.android.settings", "com.android.settings.widget.SettingsAppWidgetProvider");

            gpsIntent.addCategory("android.intent.category.ALTERNATIVE");

            gpsIntent.setData(Uri.parse("custom:3"));

            try {

                    PendingIntent.getBroadcast(StartActivity.this, 0, gpsIntent, 0).send();

            } catch (CanceledException e) {

                    e.printStackTrace();

            }

    }

2.第二种方法

   private void openGPSSettings() {       

      //获取GPS现在的状态（打开或是关闭状态）

    boolean gpsEnabled = Settings.Secure.isLocationProviderEnabled( getContentResolver(), LocationManager.GPS_PROVIDER );

    if(gpsEnabled)

    {

    //关闭GPS

     Settings.Secure.setLocationProviderEnabled( getContentResolver(), LocationManager.GPS_PROVIDER, false );

    }

    else

    {

     //打开GPS  www.2cto.com

     Settings.Secure.setLocationProviderEnabled( getContentResolver(), LocationManager.GPS_PROVIDER, true);

    }

 3.第三种方法（手动设置）

     LocationManager alm = (LocationManager)StartActivity.this.getSystemService(Context.LOCATION_SERVICE);       

       if (alm.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER))

       {           

        Toast.makeText(this, "GPS模块正常", Toast.LENGTH_SHORT).show();

       }       

       Toast.makeText(this, "请开启GPS！", Toast.LENGTH_SHORT).show();

       Intent intent = new Intent(Settings.ACTION_SECURITY_SETTINGS);

       startActivityForResult(intent,0); //此为设置完成后返回到获取界面  

 第一第二种需要加上权限

  <!--允许程序读取或写入系统设置 -->

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

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

http://www.cnblogs.com/over140/archive/2011/09/17/2179429.html#GpsStatus_Listener