package com.example.chan24.smartplanner; import android.content.Intent; import android.database.Cursor; import android.support.v7.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import android.widget.Toast; public class LoginActivity extends AppCompatActivity { DatabaseHelper db =new DatabaseHelper(this); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login); final EditText name = (EditText)findViewById(R.id.name); final EditText password = (EditText)findViewById(R.id.password); final Button login = (Button)findViewById(R.id.login); final TextView register = (TextView)findViewById(R.id.reg); register.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Intent regintent = new Intent(getApplicationContext(),RegisterActivity.class); startActivity(regintent); } }); Button b =(Button)findViewById(R.id.login); b.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //StringBuffer str =new StringBuffer(); int flag=1; String n=name.getText().toString(); String p =password.getText().toString(); Cursor res=db.retriving(); while(res.moveToNext()) { if(n.equals(res.getString(0))) { if(p.equals(res.getString(1))) { flag =0; Intent i =new Intent(getApplicationContext(),UserArea.class); i.putExtra("name",n); startActivity(i); } } } if(flag==1) { Toast.makeText(getApplicationContext(),"Enter proper details",Toast.LENGTH_SHORT).show(); } } }); } }