this my main activity .. all i want to happen is when user click on login user will be directed to the activity user belong.. if user name is equal to admin user will directed to admin module, and if user is not equal to admin user will direct to client module.. but everytime i click on login after i inputted the username and password fiel.. my emulator always stop..
public class MainActivity extends ActionBarActivity {
Button btnLogin;
Button btnRegister;
EditText pass,un;
User userdb;
public String user_name;
public String pass_word;
private DBHelper dbHelper;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
un = (EditText) findViewById(R.id.eTlogUser);
pass = (EditText) findViewById(R.id.eTlogPass);
btnLogin = (Button)findViewById(R.id.btnlogin);
btnRegister = (Button) findViewById(R.id.btnregister);
btnLogin.setOnClickListener(new View.OnClickListener(){
/* @Override
public void onClick(View v) {
startActivity(new Intent(MainActivity.this,AdminModule.class));
}
}); */
@Override
public void onClick(View v) {
if(v.getId() == R.id.btnlogin) {
// dbHelper.onOpen(User.TABLE);
Cursor cursor = dbHelper.getReadableDatabase().rawQuery("SELECT * FROM " + User.TABLE, null);
cursor.moveToFirst();
{
System.out.println("compiler was here!");
if (cursor.getCount() == 0) {
Toast.makeText(getApplicationContext(), "The table " + User.TABLE + " is empty", Toast.LENGTH_LONG).show();
} else if (cursor.getCount() >= 1) {
do {
if ((cursor.getString(9) == un.toString()) && (cursor.getString(10) == pass.toString())) {
Toast.makeText(getApplicationContext(), cursor.getString(1), Toast.LENGTH_LONG).show();
// Intent goToNextActivity = new Intent(getApplicationContext(), AdminModule.class);
if (cursor.getString(1) == "admin") {
startActivity(new Intent(MainActivity.this, AdminModule.class));
} else {
startActivity(new Intent(MainActivity.this, ClientModule.class));
}
// startActivity(goToNextActivity);
//startActivity(new Intent(MainActivity.this, AdminModule.class));
} else {
Toast.makeText(getApplicationContext(), "Wrong username/password", Toast.LENGTH_LONG).show();
}
} while (cursor.moveToNext());
}
}
}
}
});
btnRegister.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
startActivity(new Intent(MainActivity.this,UserDetail.class));
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
not this my error in the logcat ...
01-29 00:28:08.148 887-887/com.ampo.mobileampo.ampo E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.ampo.mobileampo.ampo, PID: 887
java.lang.NullPointerException
at com.ampo.mobileampo.ampo.MainActivity$1.onClick(MainActivity.java:53)
at android.view.View.performClick(View.java:4438)
at android.view.View$PerformClick.run(View.java:18422)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
and this is my code for crud operation in my user
public class UserDetail extends Activity implements View.OnClickListener {
Button ubtnsave, ubtnclose, ubtndelete;
EditText etutype, etusex,etusername;
EditText etucompany, etumail, etucont, etuadd;
EditText etloguserName, etlogpass, etlogconfirm;
private String pasword,pasword2;
private int _User_Id=0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user_detail);
ubtnsave = (Button) findViewById(R.id.ubtnsave);
ubtnclose = (Button) findViewById(R.id.ubtnclose);
ubtndelete = (Button) findViewById(R.id.ubtndelete);
etusername= (EditText) findViewById(R.id.eTuname);
etutype = (EditText) findViewById(R.id.eTutype);
etusex = (EditText) findViewById(R.id.eTsex);
etucompany = (EditText) findViewById(R.id.eTucompany);
etumail = (EditText) findViewById(R.id.eTuemail);
etucont = (EditText) findViewById(R.id.eTucont);
etuadd = (EditText) findViewById(R.id.eTuadd);
etloguserName = (EditText) findViewById(R.id.eTloguserName);
etlogpass = (EditText) findViewById(R.id.eTlogPass);
etlogconfirm = (EditText) findViewById(R.id.eTconfirmPass);
_User_Id=0;
Intent intentu = getIntent();
_User_Id = intentu.getIntExtra("user_Id", 0);
UserCrud uCrud = new UserCrud(this);
User user = new User();
user = uCrud.getUserById(_User_Id);
etusername.setText(user.username);
etutype.setText(user.usertype);
etusex.setText(user.sex);
etucompany.setText(user.usercompany);
etumail.setText(user.usermail);
etucont.setText(String.valueOf(user.usercontact));
etuadd.setText(user.useradd);
etloguserName.setText(user.loguser);
etlogpass.setText(user.logpass);
etlogconfirm.setText(user.logconfirmm);
}
// stopped here 3:15 am
@Override
public void onClick(View v) {
if (v == findViewById(R.id.ubtnsave)){
Toast.makeText(this, pasword, Toast.LENGTH_LONG).show();
Toast.makeText(this, pasword2, Toast.LENGTH_LONG).show();
UserCrud uCrud = new UserCrud(this);
User user = new User();
user.privl = "Client";
user.username=etusername.getText().toString();
user.usertype=etutype.getText().toString();
user.sex=etusex.getText().toString();
user.usercompany=etucompany.getText().toString();
user.usermail=etumail.getText().toString();
user.usercontact=etucont.getText().toString();
user.useradd=etuadd.getText().toString();
user.loguser=etloguserName.getText().toString();
user.logpass=etlogpass.getText().toString();
user.logconfirmm=etlogconfirm.getText().toString();
pasword = etlogpass.getText().toString();
pasword2 = etlogconfirm.getText().toString();
if (_User_Id==0){
if(pasword.equals(pasword2))
{ _User_Id = uCrud.insert(user);
Toast.makeText(this, "User Saved", Toast.LENGTH_SHORT).show();
}
else {
Toast.makeText(this, "Password doesn't Match" , Toast.LENGTH_LONG).show();
}
}else{
uCrud.update(user);
Toast.makeText(this, "User Updated", Toast.LENGTH_SHORT).show();
}
}else if (v == findViewById(R.id.ubtndelete)){
UserCrud uCrud = new UserCrud(this);
uCrud.delete(_User_Id);
Toast.makeText(this, "User Deleted", Toast.LENGTH_SHORT).show();
finish();
}else if (v == findViewById(R.id.ubtnclose)){
finish();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_user_detail, 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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
i don't have any idea why my emulator always stop after i click the button login?
