android 获取当前位置坐标 经度 纬度

android调用GPS获取当前位置          并且用EditText显示出来

    如果有写的不好的地方    请大神指点一下   

代码如下:

package com.example.gps;

import java.util.List;

import android.app.Activity;

import android.content.Context;

import android.location.Criteria;

import android.location.Location;

import android.location.LocationListener;

import android.location.LocationManager;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.util.Log;

import android.widget.EditText;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends Activity

{

    private EditText textView;

    @Override

    public void onCreate(Bundle savedInstanceState)

    {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        textView = (EditText) findViewById(R.id.editText1);

        new Thread(new ThreadShow()).start();启动线程

     

    }

    Handler handler=new Handler()

    {

        public void handleMessage(Message message)

        {

            if (message.what==1)

            {

                LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

                  // 返回所有已知的位置提供者的名称列表，包括未获准访问或调用活动目前已停用的。

                 

                if (lm.isProviderEnabled(LocationManager.GPS_PROVIDER))

                {

                    Location location=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);

                    if (location!=null)

                    {

                        //获取纬度信息

                        double latitude = location.getLatitude();