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How to Add AlertDialog in Android
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Abhijeet Singh
4y
17.5k
0
2
100
Article
AlertDialog.rar
Introduction
In this article, we will see how to add an AlertDialog in Android.
Procedure
Start the Eclipse IDE.
Create a new project.
Create a MainActivity.java file.
Create an activity_main.xml file for layout design.
Add a button in the XML layout.
Then look up the button by its id in the MainActivity.java file.
Create an object like this: AlertDialog.Builder a1=new AlertDialog.Builder(this);
The code for the example is given below.
MainActivity.java
package
com.example.aadialogtodayyy;
import
android.app.Activity;
import
android.app.AlertDialog;
import
android.content.DialogInterface;
import
android.content.DialogInterface.OnClickListener;
import
android.os.Bundle;
import
android.os.Process;
import
android.view.KeyEvent;
import
android.view.View;
import
android.widget.Button;
public
class
MainActivity
extends
Activity
implements
android.view.View.OnClickListener
{
Button b1;
@Override
protected
void
onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super
.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b1=(Button) findViewById(R.id.button1);
b1.setOnClickListener(
this
);
}
public
void
adddddd()
{
AlertDialog.Builder a1=
new
AlertDialog.Builder(
this
);
a1.setTitle(
"Exit from Abhijeet's Application"
);
a1.setMessage(
"Are u sure ?"
);
a1.setIcon(getResources().getDrawable(R.drawable.ic_launcher));
a1.setPositiveButton(
"Yes"
,
new
OnClickListener() {
public
void
onClick(DialogInterface dialog,
int
which) {
// TODO Auto-generated method stub
finish();
}
});
a1.setNegativeButton(
"No"
,
new
OnClickListener() {
public
void
onClick(DialogInterface dialog,
int
which) {
// TODO Auto-generated method stub
Process.killProcess(Process.myPid());
}
});
a1.show();
}
public
void
onClick(View v) {
// TODO Auto-generated method stub
adddddd();
}
@Override
public
boolean
onKeyDown(
int
keyCode, KeyEvent event) {
if
(keyCode==KeyEvent.KEYCODE_MENU)
{
adddddd();
}
// TODO Auto-generated method stub
return
super
.onKeyDown(keyCode, event);
}
}
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:paddingBottom
=
"@dimen/activity_vertical_margin"
android:paddingLeft
=
"@dimen/activity_horizontal_margin"
android:paddingRight
=
"@dimen/activity_horizontal_margin"
android:paddingTop
=
"@dimen/activity_vertical_margin"
tools:context
=
".MainActivity"
>
<
Button
android:id
=
"@+id/button1"
android:layout_width
=
"wrap_content"
android:layout_height
=
"wrap_content"
android:layout_alignParentLeft
=
"true"
android:layout_alignParentTop
=
"true"
android:layout_marginLeft
=
"106dp"
android:layout_marginTop
=
"52dp"
android:text
=
"Click Here for Exit"
/>
</
RelativeLayout
>
Output
add AlertDialog in Android
AlertDialog
AlertDialog in Android
Android
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