Question

我是android的初学者。我试图通过Https从Android应用程序发送一个Arraylist到PHP服务器。我的代码和错误日志显示在这里。

    public class MakeRoti extends Activity{
private SeekBar thickness; 
private SeekBar roast; 
private SeekBar oil; 
private EditText numbers;

int thickness_val;
int roast_val;
int oil_val;

String no_rotis;


String thick;
String oilval;
String roastval;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.makeroti);
    thickness= (SeekBar)findViewById(R.id.thickness);
    thickness.setProgress(1);
    thickness.incrementProgressBy(1);
    thickness.setMax(5);
    roast= (SeekBar)findViewById(R.id.roast);
    roast.setProgress(1);
    roast.incrementProgressBy(1);
    roast.setMax(5);
    oil= (SeekBar)findViewById(R.id.oil);
    oil.setProgress(1);
    oil.incrementProgressBy(1);
    oil.setMax(3);
    numbers=(EditText)findViewById(R.id.numberval);

}
public void sendData(View view) 
{

    thickness_val=thickness.getProgress();;
     roast_val=roast.getProgress();
     oil_val=oil.getProgress();
     no_rotis=numbers.getText().toString();

     thick=Integer.toString(thickness_val);
    roastval=Integer.toString(roast_val);
     oilval=Integer.toString(oil_val);


            new LongOperation().execute();


}
private class LongOperation extends AsyncTask<String, Void, String> {

    @Override
    protected String doInBackground(String... params) {
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(4);
nameValuePairs.add(new BasicNameValuePair("thickness", thick));
nameValuePairs.add(new BasicNameValuePair("roastval", roastval));
nameValuePairs.add(new BasicNameValuePair("oilval", oilval));
nameValuePairs.add(new BasicNameValuePair("number", no_rotis));



    String url="https://192.168.0.100/testhttps.php";
    HostnameVerifier hostnameVerifier = org.apache.http.conn.ssl.SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER;

    DefaultHttpClient client = new DefaultHttpClient();

    SchemeRegistry registry = new SchemeRegistry();
    SSLSocketFactory socketFactory = SSLSocketFactory.getSocketFactory();
    socketFactory.setHostnameVerifier((X509HostnameVerifier) hostnameVerifier);
    registry.register(new Scheme("https", socketFactory, 443));
    SingleClientConnManager mgr = new SingleClientConnManager(client.getParams(), registry);
    DefaultHttpClient httpClient = new DefaultHttpClient(mgr, client.getParams());

    // Set verifier     
    HttpsURLConnection.setDefaultHostnameVerifier(hostnameVerifier);

    // Example send http request

    HttpPost httpPost = new HttpPost(url);
    try {

        HttpResponse response = httpClient.execute(httpPost);
    } catch (ClientProtocolException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block  
        e.printStackTrace();
    }

        return "";
    }

    protected void onPostExecute(String result) {

    }

    protected void onPreExecute() {}

    protected void onProgressUpdate(Void... values) {}
}

}

这是我的全部代码..请帮助..

我的错误日志包括：

FATAL EXCEPTION: main

java.lang.IllegalStateException: Could not execute method of the activity

 Something Caused by: java.lang.reflect.InvocationTargetException
 Caused by: android.os.NetworkOnMainThreadException

Answer 1

NetworkOnMainThreadException：应用程序尝试在其主线程上执行网络操作时引发的异常。

您应该在sendfeedback()上调用AsyncTask方法，然后只有上面的代码才有效。由于网络服务器花费了大量时间来响应主线程变得反应迟钝。要避免它，你应该在另一个线程上调用它。因此AsyncTask更好。

http://android-developers.blogspot.in/2009/05/painless-threading.html

尝试以下代码： -

调用您的AsyncTask

new LongOperation().execute(thick,roast,oil,no_rotis);

您的AsyncTask

private class LongOperation extends AsyncTask<String, Void, String> {

        @Override
        protected String doInBackground(String... params) {
            List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(4);
    nameValuePairs.add(new BasicNameValuePair("thickness", params[0]));
    nameValuePairs.add(new BasicNameValuePair("roast", params[1]));
    nameValuePairs.add(new BasicNameValuePair("oil", params[2]));
    nameValuePairs.add(new BasicNameValuePair("number", params[3]));



        String url="https://192.168.0.100/testhttps.php";
        HostnameVerifier hostnameVerifier = org.apache.http.conn.ssl.SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER;

        DefaultHttpClient client = new DefaultHttpClient();

        SchemeRegistry registry = new SchemeRegistry();
        SSLSocketFactory socketFactory = SSLSocketFactory.getSocketFactory();
        socketFactory.setHostnameVerifier((X509HostnameVerifier) hostnameVerifier);
        registry.register(new Scheme("https", socketFactory, 443));
        SingleClientConnManager mgr = new SingleClientConnManager(client.getParams(), registry);
        DefaultHttpClient httpClient = new DefaultHttpClient(mgr, client.getParams());

        // Set verifier     
        HttpsURLConnection.setDefaultHostnameVerifier(hostnameVerifier);

        // Example send http request

        HttpPost httpPost = new HttpPost(url);
        try {

            HttpResponse response = httpClient.execute(httpPost);
        } catch (ClientProtocolException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block  
            e.printStackTrace();
        }
       }
            return "";
        }

        @Override
        protected void onPostExecute(String result) {

        }

        @Override
        protected void onPreExecute() {}

        @Override
        protected void onProgressUpdate(Void... values) {}
    }

来自android的Https Post

1 个答案: