Android AlertDialog warning dialog box implementation.

Today, I read about the implementation of the Android AlertDialog warning dialog box, and wrote a query item. I will share it below.
 
The dialog box notification is mainly used to post the code when the user needs to make a confirmation or other selection.

Strings. xml

[Html]
01. <? Xml version = "1.0" encoding = "UTF-8"?>
02. <resources>
03.
04. <string name = "app_name"> FileManage </string>
05. <string name = "hello_world"> Hello world! </String>
06. <string name = "menu_settings"> Settings </string>
07. <string name = "button"> dialog box </string>
08.
09. </resources>
<? Xml version = "1.0" encoding = "UTF-8"?>
<Resources>

<String name = "app_name"> FileManage </string>
<String name = "hello_world"> Hello world! </String>
<String name = "menu_settings"> Settings </string>
<String name = "button"> dialog box </string>

</Resources>
Main. xml

 

[Html]
01. <RelativeLayout xmlns: android = "http://schemas.android.com/apk/res/android"
02. xmlns: tools = "http://schemas.android.com/tools"
03. android: layout_width = "match_parent"
04. android: layout_height = "match_parent"
05. tools: context = ". MainActivity">
06.
07. <Button
08. android: layout_width = "wrap_content"
09. android: layout_height = "wrap_content"
10. android: text = "@ string/button"
11. android: id = "@ + id/button"
12./>
13.
14. </RelativeLayout>
<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"
Tools: context = ". MainActivity">

<Button
Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content"
Android: text = "@ string/button"
Android: id = "@ + id/button"
/>

</RelativeLayout>
The following is the java code

MainActivity. java

[Java]
01. package com. example. filemanage;
02.
03. import android. app. Activity;
04. import android. app. AlertDialog;
05. import android. content. DialogInterface;
06. import android. content. Intent;
07. import android.net. Uri;
08. import android. OS. Bundle;
09. import android. view. View;
10. import android. widget. Button;
11. import android. view. Menu;
12.
13. public class MainActivity extends Activity {
14.
15. @ Override
16. protected void onCreate (Bundle savedInstanceState ){
17. super. onCreate (savedInstanceState );
18. setContentView (R. layout. activity_main );
19.
20. Button button = (Button) findViewById (R. id. button );
21. button. setOnClickListener (new View. OnClickListener (){
22. @ Override
23. public void onClick (View v ){
24. AlertDialog. Builder builder =
25. new
26. AlertDialog. Builder (MainActivity. this );
27. builder. setTitle ("hopean.com ")
28. setMessage ("are you sure you want to visit our website? ")
29 .. setCancelable (false)
30 .. setPositiveButton ("OK ",
31. new DialogInterface. OnClickListener (){
32. public void onClick (DialogInterface dialog, int id)
33 .{
34. // create an intent to access the http://www.hopean.com website,
35. // The intention will tell the system to open a browser and access the website.
36. Intent intent =
37. new Intent (Intent. ACTION_VIEW, Uri. parse ("http://www.hopean.com "));
38. startActivity (intent );
39 .}
40 .})
41 .. setNegativeButton ("cancel ",
42. new DialogInterface. OnClickListener (){
43. public void onClick (DialogInterface dialog, int id)
44 .{
45. dialog. cancel (); // Delete dialog box
46 .}
47 .});
48. AlertDialog alert = builder. create (); // create dialog box
49. alert. show (); // display dialog box
50 .}
51 .});
52 .}
53.
54. @ Override
55. public boolean onCreateOptionsMenu (Menu menu ){
56. // Inflate the menu; this adds items to the action bar if it is present.
57. getMenuInflater (). inflate (R. menu. activity_main, menu );
58. return true;
59 .}
60.