将数据发送到服务器时，Android应用程序崩溃

Question

I am trying to send some data to my server which is publicly available on the internet. The app gets started as a service after boot is completed (permission is added), how ever the app crashes. I have narrowed the code down. It seems like it crashes when it is trying to send data to the server.

Below is my code. I really appreciate if you guys can help me on this.

package com.example.bootstart;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

import android.os.AsyncTask;
import android.util.Log;

class SendData extends AsyncTask<Void, Void, Boolean> {


    public void sendinfo(){
            // Creating HTTP client
        HttpClient httpClient = new DefaultHttpClient();
        // Creating HTTP Post
        HttpPost httpPost = new HttpPost(
                "http://www.mydomain.com/controller_name/funtion_name");

        // Building post parameters
        // key and value pair
        List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(4);
        nameValuePair.add(new BasicNameValuePair("imei", "12345"));
        nameValuePair.add(new BasicNameValuePair("welawa", "12315646545"));
        nameValuePair.add(new BasicNameValuePair("lat", "123.25"));
        nameValuePair.add(new BasicNameValuePair("long", "52.22323"));

        // Url Encoding the POST parameters
        try {
            httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));
        } catch (UnsupportedEncodingException e) {
            // writing error to Log
            e.printStackTrace();
        }

        // Making HTTP Request
        try {
            HttpResponse response = httpClient.execute(httpPost);

            // writing response to log
            Log.d("Http Response:", response.toString());
        } catch (ClientProtocolException e) {
            // writing exception to log
            e.printStackTrace();
        } catch (IOException e) {
            // writing exception to log
            e.printStackTrace();

        }
    }

    @Override
    protected Boolean doInBackground(Void... params) {
        // TODO Auto-generated method stub
        return null;
    }




}

I am a php developer, trying to write a simple app that logs GPS cordinates.

I can't check the console because some thing has made the emulator working. I always get the emulator-arm.exe has stopped working bla bla bla. So I use my phone and restart it everytime when I test. So unfortunately I do not have access to a log either.

Any help is greatly appreciated.

Answer 1

I don't know where is sendinfo() called? But I think in your main Activity you call that:

new SendData().sendInfo(); :(

Please put sendInfo to doInBackground

And in your Activity : new SendData().execute();