İşte benim Java kodum. Benim sorunum, başka bir aktivite açmak için OnPostExecute
'a kod eklediğimde. Android Studio’da yeniyim, bu yüzden ilk defa bu problemle karşılaşıyorum. Android'de onPostExecute yönteminden yeni etkinlik başlatamıyor
package com.example.gonalo.meu;
import android.app.AlertDialog;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import static android.support.v4.app.ActivityCompat.startActivity;
import static android.support.v4.content.ContextCompat.startActivities;
/**
* Created by Gonçalo on 23/03/2016.
*/
public class BackGroundWorker extends AsyncTask<String,Void,String> {
Context context;
AlertDialog alertDialog;
BackGroundWorker (Context ctx) {
context = ctx;
}
@Override
protected String doInBackground(String... params) {
String type = params[0];
String login_url = "http://192.168.1.79/login.php";
String register_url = "http://192.168.1.79/register.php";
//String verifyuserpass_url = "http://192.168.0.102/verifyuserpass.php";
//String verifypass_url = "http://192.168.0.102/verifyuserpass.php";
if(type.equals("login")) {
try {
String user_name = params[1];
String password = params[2];
URL url = new URL(login_url);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setDoOutput(true);
httpURLConnection.setDoInput(true);
OutputStream outputStream = httpURLConnection.getOutputStream();
BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8"));
String post_data = URLEncoder.encode("user_name", "UTF-8") + "=" + URLEncoder.encode(user_name, "UTF-8") + "&" + URLEncoder.encode("password", "UTF-8") + "=" + URLEncoder.encode(password, "UTF-8");
String user = URLEncoder.encode(user_name, "UTF-8");//guarda o nome de utilizador introduzido
String pass = URLEncoder.encode(password, "UTF-8");//guarda a pass introduzido
System.err.println("------------------------------------------");
/*/ if(user.equals("Nome de Utilizador")){
if(pass.equals("Password")) {
System.err.println("Entrou no if");
startActivity(new Intent(this, Pagina1.class));}
/*/
bufferedWriter.write(post_data);
bufferedWriter.flush();
bufferedWriter.close();
outputStream.close();
InputStream inputStream = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream,"iso-8859-1"));
String result="";
String line="";
while((line = bufferedReader.readLine())!= null) {
result +=line;
}
bufferedReader.close();
inputStream.close();
httpURLConnection.disconnect();
return result;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
} else if(type.equals("register")) {
try {
String name = params[1];
String surname = params[2];
String age = params[3];
String username = params[4];
String password = params[5];
URL url = new URL(register_url);
HttpURLConnection httpURLConnection = (HttpURLConnection)url.openConnection();
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setDoOutput(true);
httpURLConnection.setDoInput(true);
OutputStream outputStream = httpURLConnection.getOutputStream();
BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8"));
String post_data = URLEncoder.encode("name", "UTF-8")+"="+URLEncoder.encode(name, "UTF-8")+"&"
+ URLEncoder.encode("surname", "UTF-8")+"="+URLEncoder.encode(surname, "UTF-8")+"&"
+ URLEncoder.encode("age", "UTF-8")+"="+URLEncoder.encode(age, "UTF-8")+"&"
+ URLEncoder.encode("username", "UTF-8")+"="+URLEncoder.encode(username, "UTF-8")+"&"
+URLEncoder.encode("password", "UTF-8")+"="+URLEncoder.encode(password, "UTF-8");
bufferedWriter.write(post_data);
bufferedWriter.flush();
bufferedWriter.close();
outputStream.close();
InputStream inputStream = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream,"iso-8859-1"));
String result="";
String line="";
while((line = bufferedReader.readLine())!= null) {
result += line;
}
bufferedReader.close();
inputStream.close();
httpURLConnection.disconnect();
return result;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
@Override
protected void onPreExecute() {
alertDialog = new AlertDialog.Builder(context).create();
alertDialog.setTitle("Login Status");
}
@Override
protected void onPostExecute(String result) {
alertDialog.setMessage(result);
alertDialog.show();
if (result.equals("Login Success"));
Intent myIntent = new Intent(this, Pagina1.class); // Im facing problem here
startActivity(myIntent); // Im facing problem here
}
@Override
protected void onProgressUpdate(Void... values) {
super.onProgressUpdate(values);
}
}
Bazı basit kod eklemek çalışıyorum ve benim Android tanımıyor.
Sorunumu anlamak için yüklediğim resimleri görün. –
Şimdi çalışıyor mu kardeşim? – Vucko