通过经纬度获取位置信息

￡神魔★判官ぃ 2022-09-05 00:22 293阅读 0赞

位置信息的获取，有很多方法。这里只使用了HttpURLConnection中的GET方式访问第三方地图接口，获取实时位置，这里是通过申请百度地图访问接口调试使用。感觉精度一般，但勉强可以使用。

先上效果图

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpY2h1YW5wYg_size_16_color_FFFFFF_t_70][]

再上主要代码

//获取地理位置
    class WxpPositionGetThread extends Thread {
        private String lng;
        private String lat;
        private TextView show_content;
        private String url = "";
        private Handler handler = new Handler();
    
        public WxpPositionGetThread(String url, String lat, String lng, TextView show_content) {
            this.lat = lat;
            this.lng = lng;
            this.show_content = show_content;
            this.url = url;       
        }
    
        @Override
        public void run() {
            super.run();
            getRun();
        }
    
        private void getRun() {
    
            if (TextUtils.isEmpty(url)) {
                throw new NullPointerException("please ensure url is not equals  null ");
            }
            BufferedReader bufferedReader = null;
            try {
                url=url+"output=json&ak=esNPFDwwsXWtsQfw4NMNmur1&location=";
                url = url + lat+",";
                url = url + lng;
    
                show_content.setText("位置信息");
                URL httpUrl = new URL(url);
                HttpURLConnection httpURLConnection = (HttpURLConnection) httpUrl.openConnection();
                //设置请求头header
                httpURLConnection.setRequestMethod("GET");
                //设置请求头header
                httpURLConnection.setRequestProperty("test-header","get-header-value");
                httpURLConnection.setReadTimeout(5000);
    
                //获取内容
                InputStream inputStream = httpURLConnection.getInputStream();
                bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
                final StringBuffer stringBuffer = new StringBuffer();
                String line = null;
                while ((line = bufferedReader.readLine()) != null) {
                    stringBuffer.append(line);
                }
                //
                //show_content.setText(stringBuffer.toString());
                String msgr = stringBuffer.toString();
                int pos=msgr.indexOf("formatted_address")+20;
                int pos2=msgr.indexOf("business")-11;
                show_content.setText(msgr.substring(pos,pos2));
                //
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        //解析json
                        try {
                            JSONObject jsonObject = new JSONObject(stringBuffer.toString());
                            String mykey = "formatted_address";
                            String jVal = "";
                            //jVal=jsonObject.getString(mykey);
                            //show_content.setText(jVal);
    
                        } catch (JSONException e) {
                            e.printStackTrace();
                            show_content.setText(e.toString());
                        }
                        //
                       // show_content.setText(msgr);
                    }
                });
            } catch (Exception e) {
                //show_content.setText(e.toString());
    
            } finally {
                if (bufferedReader != null) {
                    try {
                        bufferedReader.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
    
        }
    }

再上调用代码

// 使用
                    Location location = getLastKnownLocation();
                    if(location==null) {
                        edtReturn.setText("请打开'App测试'的位置信息访问权限");
                        return ;
                    }
    
                    double lat = location.getLatitude();//获取纬度
                    double lng = location.getLongitude();//获取经度
    
                    edtReturn.setText(String.valueOf(lat)+" "+String.valueOf(lng));
    
                    String url = "http://api.map.baidu.com/geocoder?";
                    new WxpPositionGetThread(url, String.valueOf(lat), String.valueOf(lng), edtPos).start();

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NpY2h1YW5wYg_size_16_color_FFFFFF_t_70]: /images/20220829/97b165b212f74687b7d841618297dffd.png