In this post, I will show you how to show alertDialog in Android. AlertDialog is used largely to show alerts or confirmation messages to the user. Alert Dialog is very easy to create.
So, Let’s Start:-
Simple AlertDialog with “OK” Button
//create alertDialogBuilder
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this);
// set title
alertDialogBuilder.setTitle("CoderzPassion");
// set dialog message
alertDialogBuilder
.setMessage("Welcome To CoderzPassion!Keep Visting for Android Tutorials")
.setCancelable(false)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// if this button is clicked, do something here i am displaying Toast Message
Toast.makeText(MainActivity.this, "You clicked On Ok Button ", Toast.LENGTH_SHORT).show();
}
});
// create alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
// show it
alertDialog.show();AlertDialog with “Two” Buttons
//create alertDialogBuilder
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this);
// set title
alertDialogBuilder.setTitle("Your Title");
// set dialog message
alertDialogBuilder
.setMessage("Click yes to exit!")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// if this button is clicked, do something here i am displaying Toast Message
Toast.makeText(MainActivity.this, "You clicked On Yes ", Toast.LENGTH_SHORT).show();
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// if this button is clicked, just close
// the dialog box and do nothing
dialog.cancel();
}
});
// create alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
// show it
alertDialog.show();AlertDialog with Three Button (One Neutral Button)
//create alertDialogBuilder
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this);
// set title
alertDialogBuilder.setTitle("Your Title");
// set dialog message
alertDialogBuilder
.setMessage("Click yes to exit!")
.setCancelable(false)
.setIcon(android.R.drawable.ic_dialog_alert)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// if this button is clicked, do something here i am displaying Toast Message
Toast.makeText(MainActivity.this, "You clicked On Yes ", Toast.LENGTH_SHORT).show();
}
})
.setNeutralButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//cancel the dialog box
dialog.cancel();
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// if this button is clicked, do something here i am displaying Toast Message
Toast.makeText(MainActivity.this, "You clicked On No ", Toast.LENGTH_SHORT).show();
}
});
// create alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
// show it
alertDialog.show();Creating Custom Dialog
layout for CustomDialog
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#D3D7DB"
android:orientation="vertical" >
<TextView android:id="@+id/dialogtitle"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="@android:color/black"
android:text="Please enter the email address you used for the account"
/>
<EditText
android:id="@+id/emailedittext"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:ems="10"
android:padding="5dp"
android:cursorVisible="true"
android:singleLine="true"
android:background="@android:color/white"
android:textColor="@android:color/black"
android:hint="Enter Mail id"
android:textSize="20dp" >
<requestFocus />
</EditText>
<LinearLayout android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:weightSum="2"
android:orientation="horizontal">
<Button
android:id="@+id/cancelbtn"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="CANCEL"/>
<Button
android:id="@+id/okbtn"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="Ok"/>
</LinearLayout>
</LinearLayout>
Creating Dialog using the above layout
final Dialog dialog = new Dialog(MainActivity.this);
// Include dialog.xml file
dialog.setContentView(R.layout.forgotpassword);
// Set dialog title
dialog.setTitle("ALERT!!");
// set values for custom dialog components - text, image and button
Button okbtn = (Button) dialog.findViewById(R.id.okbtn);
Button cancelbtn = (Button) dialog.findViewById(R.id.cancelbtn);
final EditText emailedittext = (EditText) dialog.findViewById(R.id.emailedittext);
dialog.show();
dialog.getWindow().setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
// if decline button is clicked, close the custom dialog
cancelbtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Close dialog
dialog.dismiss();
}
});
okbtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String email=emailedittext.getText().toString();
//do something more here
}
});Final Code Now
MainActivity.java containing button showing alertdialog on clicking the button
//layout for MainActivity
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<Button
android:id="@+id/simpledialog"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Show Simple AlertDialog"/>
<Button
android:id="@+id/twobuttondialog"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Show Two Button AlertDialog"
android:layout_below="@+id/simpledialog"/>
<Button
android:id="@+id/threebuttondialog"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Show Neutral Button AlertDialog"
android:layout_below="@+id/twobuttondialog"/>
<Button
android:id="@+id/customdialog"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Show Custom AlertDialog"
android:layout_below="@+id/threebuttondialog"/>
</RelativeLayout>
//layout for custom Dialog
forgotpassword.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#D3D7DB"
android:orientation="vertical" >
<TextView android:id="@+id/dialogtitle"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="@android:color/black"
android:text="Please enter the email address you used for the account"
/>
<EditText
android:id="@+id/emailedittext"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:ems="10"
android:padding="5dp"
android:cursorVisible="true"
android:singleLine="true"
android:background="@android:color/white"
android:textColor="@android:color/black"
android:hint="Enter Mail id"
android:textSize="20dp" >
<requestFocus />
</EditText>
<LinearLayout android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:weightSum="2"
android:orientation="horizontal">
<Button
android:id="@+id/cancelbtn"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="CANCEL"/>
<Button
android:id="@+id/okbtn"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:text="Submit"/>
</LinearLayout>
</LinearLayout>
MainActivity.java
package com.coderzpassion.alertsample;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
Button simpledialog,twobuttondialog,threebuttondialog,customdialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
simpledialog=(Button)findViewById(R.id.simpledialog);
//handling the click of simpledialog button
simpledialog.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showSimpleDialog();
}
});
twobuttondialog=(Button)findViewById(R.id.twobuttondialog);
twobuttondialog.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showtwoButtonDialog();
}
});
threebuttondialog=(Button)findViewById(R.id.threebuttondialog);
//handling the click of threebuttondialog button
threebuttondialog.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showthreeButtonDialog();
}
});
customdialog=(Button)findViewById(R.id.customdialog);
//handling the click of customdialog button
customdialog.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showCustomDialog();
}
});
}
public void showSimpleDialog()
{
//create alertDialogBuilder
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this);
// set title
alertDialogBuilder.setTitle("CoderzPassion");
// set dialog message
alertDialogBuilder
.setMessage("Welcome To CoderzPassion!Keep Visting for Android Tutorials")
.setCancelable(false)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// if this button is clicked, do something here i am displaying Toast Message
Toast.makeText(MainActivity.this, "You clicked On Ok Button ", Toast.LENGTH_SHORT).show();
}
});
// create alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
// show it
alertDialog.show();
}
public void showtwoButtonDialog()
{
//create alertDialogBuilder
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this);
// set title
alertDialogBuilder.setTitle("Your Title");
// set dialog message
alertDialogBuilder
.setMessage("Click yes to exit!")
.setCancelable(false)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// if this button is clicked, do something here i am displaying Toast Message
Toast.makeText(MainActivity.this, "You clicked On Yes ", Toast.LENGTH_SHORT).show();
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// if this button is clicked, just close
// the dialog box and do nothing
dialog.cancel();
}
});
// create alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
// show it
alertDialog.show();
}
public void showthreeButtonDialog()
{
//create alertDialogBuilder
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this);
// set title
alertDialogBuilder.setTitle("Your Title");
// set dialog message
alertDialogBuilder
.setMessage("Click yes to exit!")
.setCancelable(false)
.setIcon(android.R.drawable.ic_dialog_alert)
.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// if this button is clicked, do something here i am displaying Toast Message
Toast.makeText(MainActivity.this, "You clicked On Yes ", Toast.LENGTH_SHORT).show();
}
})
.setNeutralButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//cancel the dialog box
dialog.cancel();
}
})
.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// if this button is clicked, do something here i am displaying Toast Message
Toast.makeText(MainActivity.this, "You clicked On No ", Toast.LENGTH_SHORT).show();
}
});
// create alert dialog
AlertDialog alertDialog = alertDialogBuilder.create();
// show it
alertDialog.show();
}
public void showCustomDialog()
{
final Dialog dialog = new Dialog(MainActivity.this);
// Include dialog.xml file
dialog.setContentView(R.layout.forgotpassword);
// Set dialog title
dialog.setTitle("ALERT!!");
// set values for custom dialog components - text, image and button
Button okbtn = (Button) dialog.findViewById(R.id.okbtn);
Button cancelbtn = (Button) dialog.findViewById(R.id.cancelbtn);
final EditText emailedittext = (EditText) dialog.findViewById(R.id.emailedittext);
dialog.show();
dialog.getWindow().setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
// if decline button is clicked, close the custom dialog
cancelbtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Close dialog
dialog.dismiss();
}
});
okbtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String email=emailedittext.getText().toString();
//do something more here
}
});
}
@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);
}
}