在公共LocationResult之外访问字符串信息

Question

我有一个脚本，如下所示，从LocationResult获取url以在httppost中使用

public class List extends ListActivity {

    int ct_id;
    String[] ct_number = null;
    String[] ct_address = null;
    String[] ct_phone = null;
    String[] ct_fax = null;
    String[] ct_email = null;
    String[] ct_city = null;
    String[] ct_province = null;
    String[] ct_country = null;
    String[] ct_pcode = null;
    String[] ct_lat = null;
    String[] ct_long = null;
    String[] ct_distance = null;
    String[] ct_show = null;
    String[] ct_listinfo = null;

    MyLocation myLocation = new MyLocation();

    public void onCreate(Bundle bundle) {
        super.onCreate(bundle);
        setContentView(R.layout.timslist);
        findCurrentLocation();

        //check for key to remove ads
        if(isKeyInstalled(this) == false){

            //AdMob Banner
            LinearLayout parent = (LinearLayout) findViewById(R.id.adveiw);
            AdView ad = new AdView(this, AdSize.BANNER, "XXXXXXXXXXXXXX");
            parent.addView(ad);
            AdRequest r = new AdRequest();
            //r.setTesting(true);
            r.setTesting(false);
            ad.loadAd(r);
        }

        if(isKeyInstalled(this) == true){

        }

        String result = null;
        InputStream is = null;
        StringBuilder sb = null;
        //http post
        try{
            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost("" + infourl + "");
            //httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
            HttpResponse response = httpclient.execute(httppost);
            HttpEntity entity = response.getEntity();
            is = entity.getContent();
        }catch(Exception e){
            Log.e("log_tag", "Error in http connection"+e.toString());
        }
        //convert response to string
        try{
            BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
            sb = new StringBuilder();
            sb.append(reader.readLine() + "\n");
            String line="0";
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
            is.close();
            result=sb.toString();
        }catch(Exception e){
            Log.e("log_tag", "Error converting result"+e.toString());
        }
        //paring data
        JSONArray jArray;
        try{
            jArray = new JSONArray(result);
            JSONObject json_data=null;
            ct_number=new String[jArray.length()];
            ct_address=new String[jArray.length()];
            ct_phone=new String[jArray.length()];
            ct_fax=new String[jArray.length()];
            ct_email=new String[jArray.length()];
            ct_city=new String[jArray.length()];
            ct_province=new String[jArray.length()];
            ct_country=new String[jArray.length()];
            ct_pcode=new String[jArray.length()];
            ct_lat=new String[jArray.length()];
            ct_long=new String[jArray.length()];
            ct_distance=new String[jArray.length()];
            ct_listinfo=new String[jArray.length()];
            for(int i=0;i<jArray.length();i++){
                json_data = jArray.getJSONObject(i);
                ct_id=json_data.getInt("location_id");
                ct_number[i]=json_data.getString("store_number");
                ct_address[i]=json_data.getString("store_address");
                ct_phone[i]=json_data.getString("store_phone");
                ct_fax[i]=json_data.getString("store_fax");
                ct_email[i]=json_data.getString("store_email");
                ct_city[i]=json_data.getString("store_city");
                ct_province[i]=json_data.getString("store_province");
                ct_country[i]=json_data.getString("store_country");
                ct_pcode[i]=json_data.getString("store_pcode");
                ct_lat[i]=json_data.getString("store_lat");
                ct_long[i]=json_data.getString("store_long");
                ct_distance[i]=json_data.getString("store_distance");
                ct_listinfo[i] = new String (ct_address[i] + "\n" + ct_city[i] + ", " + ct_province[i] + " - " + ct_distance[i] + " Km Away");
            }
        }
        catch(JSONException e1){
            Toast.makeText(getBaseContext(), "No Addresses Found" ,Toast.LENGTH_LONG).show();
        } catch (ParseException e1) {
            e1.printStackTrace();
        }

        setListAdapter(new ArrayAdapter<String>(this,R.layout.listview,ct_listinfo));
        ListView lv;
        lv = getListView();
        lv.setTextFilterEnabled(true);
        lv.setCacheColorHint(Color.TRANSPARENT);
        lv.setBackgroundColor(Color.TRANSPARENT);
        lv.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> timslist, View view,
                    int position, long id) {

                Intent i = new Intent(getApplicationContext(), TimsListMore.class);

                i.putExtra("ct_number_pass", ct_number[position]);
                i.putExtra("ct_address_pass", ct_address[position]);
                i.putExtra("ct_phone_pass", ct_phone[position]);
                i.putExtra("ct_city_pass", ct_city[position]);
                i.putExtra("ct_province_pass", ct_province[position]);
                i.putExtra("ct_country_pass", ct_country[position]);
                i.putExtra("ct_pcode_pass", ct_pcode[position]);
                i.putExtra("ct_distance_pass", ct_distance[position]);

                startActivity(i);

            }
        });
    }

    protected boolean isKeyInstalled(Context context) {
          // the packagename of the 'key' app
          String proPackage = "XXXXXXXXXXXXXXXXXXXX";

          // get the package manager
          final PackageManager pm = context.getPackageManager();

          // get a list of installed packages
          List<PackageInfo> list = pm.getInstalledPackages(PackageManager.GET_DISABLED_COMPONENTS);

          // let's iterate through the list
          Iterator<PackageInfo> i = list.iterator();
          while(i.hasNext()) {
            PackageInfo p = i.next();
            // check if proPackage is in the list AND whether that package is signed
            //  with the same signature as THIS package
            if((p.packageName.equals(proPackage)) &&
               (pm.checkSignatures(context.getPackageName(), p.packageName) == PackageManager.SIGNATURE_MATCH))
              return true;
          }
          return false;
        }

    private void findCurrentLocation() {
        myLocation.getLocation(this, locationResult);
    }

    public LocationResult locationResult = new LocationResult() {


        public void gotLocation(Location location) {
            // TODO Auto-generated method stub
            if (location != null) {
                String infourl  = "http://www.somedomain.com/list.php?lat=" + location.getLatitude() + "&long=" + location.getLongitude();

            }
        }
    };
}

所以这就是

String infourl  = "http://www.somedomain.com/list.php?lat=" + location.getLatitude() + "&long=" + location.getLongitude();

需要深入研究

String result = null;
        InputStream is = null;
        StringBuilder sb = null;
        //http post
        try{
            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost("" + infourl + "");
            //httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
            HttpResponse response = httpclient.execute(httppost);
            HttpEntity entity = response.getEntity();
            is = entity.getContent();
        }catch(Exception e){
            Log.e("log_tag", "Error in http connection"+e.toString());
        }

我认为这不是一件很难做的事情。

Answer 1

我的建议是尝试使用公共字符串...希望这能有所帮助。

Answer 2

以下是上一个问题：

public LocationResult locationResult = new LocationResult() {
  String latitude = null;  
  String longitude = null;  

  public void gotLocation(Location location) {
    if (location != null) {
      latitude  = location.getLatitude() + "";
      longitude  = location.getLongitude() + "";
    }
  }

  public String getLatitude() {
    return latitude;
  }
  public String getLongitude() {
    return longitude;
  }
}

您将使用它作为

String location = new String (locationResult.getLatitude() + " " + locationResult.getLongitude());

在你活动中的任何地方。当然，这非常粗糙，甚至根本不检查是否存在有效的位置，但它给了您解决它的想法。

再想一想，我相信您真正想要的与您所要求的恰恰相反:如果您需要使用LAT值和long值来发送http post，那么我将在gotLocation函数中执行post。这样，您就可以确定不会向post发送空值。创建一个方法

public void postURL (String urlString) {
  if (urlString == null) return;
  HttpPost httppost = new HttpPost(urlString);
  // whatever else code you have to handle responses, etc.
}

并从gotLocation()中调用它为

TimsList.this.postURL ("http://mytimmies.myfunhouse.net/app_main_list.php?lat=" + 
  location.getLatitude() + "&long=" + location.getLongitude());