ANDROID - Alert Dialog with Listener

Demo:

AlertDialog1.java:

package com.venkool;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class AlertDialog1Activity extends Activity {
    /** Called when the activity is first created. */

Button btnLogin;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
     
        btnLogin = (Button)findViewById(R.id.btnLogin);
     
        btnLogin.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub

AlertDialog.Builder dialog=new AlertDialog.Builder(AlertDialog1Activity.this);
dialog.setMessage("Do you want LogIn");
dialog.setPositiveButton("Yes", new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub

Intent intent=new Intent(AlertDialog1Activity.this,LoginScreen.class);
startActivity(intent);
}
});
dialog.show();
}
});
    }
}



LoginScreen.java:


package com.venkool;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class LoginScreen extends Activity {
    /** Called when the activity is first created. */

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.login);
     
    }
}




main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:background="@color/myBackgroundColor" >
 
    <Button
        android:layout_marginTop="150dp"
        android:gravity="center"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="LogIn"
        android:id="@+id/btnLogin"/>

</LinearLayout>

login.xml:


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <EditText
        android:layout_marginTop="15dp"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:hint="Enter User Name" />

    <EditText
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:hint="Enter Password" />

    <Button
        android:id="@+id/btnLogin"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="15dp"
        android:gravity="center"
        android:text="LogIn" />

</LinearLayout>