can someone help me ? i alwayse get this kind exception like the picture bellow when i click login button :
this code for MainActivity:
package com.TPK.SistemPendataanPelalatan;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class MainActivity extends Activity {
TextView ket;
EditText id_user,pass;
Button btnlogin;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
//deklarasi input dan output
ket =(TextView) findViewById(R.id.warning_login);
id_user = (EditText) findViewById(R.id.singup_id);
pass = (EditText) findViewById(R.id.input_pass);
btnlogin = (Button) findViewById(R.id.login);
// event tombol ditekan
btnlogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String id=id_user.getText().toString();
String pw=pass.getText().toString();
int salah=0;//hitung jumlah kesalahan
try {
Class.forName("com.mysql.jdbc.Driver");
} catch (ClassNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
Statement st=(Statement)hubung.GetConnection().createStatement();
if(id_user.getText().toString().isEmpty()||pass.getText().toString().isEmpty()){
ket.setText("ID dan Password Harus di Isi!");
}else{
ResultSet rs=st.executeQuery("select * from user where id='"+id+"'and password='"+pw+"'");
if(rs.next()){
//kalo sukses masuk
ket.setText("Selamat Datang ...");
String nama=rs.getString(1);
if(rs.getString(5)=="1"){//ADMIN
Intent i = new Intent(MainActivity.this, activity_user_admin.class);
i.putExtra("nama", nama);//passing nama ke activity user admin
startActivity(i);
st.close();
}else if(rs.getString(5)=="2"){//SUPERVISOR
Intent i = new Intent(MainActivity.this, activity_user_super.class);
i.putExtra("nama", nama);//passing nama ke activity user super
startActivity(i);
st.close();
}else if(rs.getString(5)=="3"){//TEKNISI
Intent i = new Intent(MainActivity.this, activity_user_teknisi.class);
i.putExtra("nama", nama);//passing nama ke activity user teknisi
startActivity(i);
st.close();
}
}
else {
ket.setText("ID atau Password Salah !");
salah++;
if(salah>3){
salah=0;
ket.setText("Silahkan Lapor Admin");
}
}
}
} catch (SQLException e) {
// TODO Auto-generated catch block
ket.setText(e.toString());
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
this where i call jdbc to connect to mysql with name hubung :
package com.TPK.SistemPendataanPelalatan;
import java.sql.*;
public class hubung {
private static Connection kon;
public static Connection GetConnection() throws SQLException{
if(kon==null){
kon = DriverManager.getConnection("jdbc:mysql://10.11.1.232:3306/tpk_peralatan","root","");
}
return kon;
}
}
thanks ...
NB : this program can build and run well but stuck in mysql connection ...
