Android - Simple Sending SMS

[RomanReigns]

Operating System

Android

In this tutorial we will try to create a Simple Sending SMS using Android. This tutorial is only an example for sending an SMS, it does not contain the receiving message yet. Android is a mobile operating system developed by Google. It used in several gadget like smartphone, tablet, and even television. Android is open source to developers who has an interest in developing mobile apps. It also provide an adaptive framework that allow the developer to develop an apps in a simpler way. So let's now do the coding...

Getting Started:

First you will have to download & install the Android Development IDE (Android Studio or Eclipse). Android Studio is an open source development feel free to develop your things.

Here's the link for the Android Studio https://developer.android.com/studio/index.html.

Layout Design

We will now create the design for the application, first locate the layout file called activity_main.xml, this is the default name when create a new activity. Then write these codes inside your layout file.

1. <?
   
   xml version=
   
   "1.0"
   
   encoding=
   
   "utf-8"
   
   ?>
   
2. <
   
   RelativeLayout xmlns:
   
   android=
   
   "http://schemas.android.com/apk/res/android"
   
3. xmlns:
   
   app=
   
   "http://schemas.android.com/apk/res-auto"
   
4. xmlns:
   
   tools=
   
   "http://schemas.android.com/tools"
   
5. android:
   
   layout_width=
   
   "match_parent"
   
6. android:
   
   layout_height=
   
   "match_parent"
   
7. tools:
   
   context=
   
   "com.razormist.sendsmsapp.MainActivity"
   
   >
   
8. 
   
9. <
   
   EditText
   
10. android:
    
    id=
    
    "@+id/et_contact"
    
11. android:
    
    layout_height=
    
    "wrap_content"
    
12. android:
    
    layout_width=
    
    "match_parent"
    
13. android:
    
    inputType=
    
    "number"
    
14. android:
    
    hint=
    
    "Contact Number"
    
    />
    
15. 
    
16. <
    
    EditText
    
17. android:
    
    id=
    
    "@+id/et_message"
    
18. android:
    
    layout_height=
    
    "250dp"
    
19. android:
    
    layout_width=
    
    "match_parent"
    
20. android:
    
    hint=
    
    "Message"
    
21. android:
    
    inputType=
    
    "textMultiLine"
    
22. android:
    
    gravity=
    
    "left"
    
23. android:
    
    layout_below=
    
    "@+id/et_contact"
    
    />
    
24. 
    
25. <
    
    Button
    
    
    
26. android:
    
    id=
    
    "@+id/btn_send"
    
27. android:
    
    layout_height=
    
    "wrap_content"
    
28. android:
    
    layout_width=
    
    "wrap_content"
    
29. android:
    
    layout_below=
    
    "@+id/et_message"
    
30. android:
    
    layout_centerHorizontal=
    
    "true"
    
31. android:
    
    text=
    
    "send"
    
    />
    
32. 
    
33. </
    
    RelativeLayout>
    

Android Manifest File

The Android Manifest file provides essential information about your app to the Android system in which the system must required before running the code. It describe the overall information about the application. It contains some libraries that needed to access the several method within the app.

1. <?
   
   xml version=
   
   "1.0"
   
   encoding=
   
   "utf-8"
   
   ?>
   
2. <
   
   manifest xmlns:
   
   android=
   
   "http://schemas.android.com/apk/res/android"
   
3. package
   
   =
   
   "com.razormist.sendsmsapp"
   
   >
   
4. 
   
5. <
   
   uses-
   
   permission android:
   
   name=
   
   "android.permission.SEND_SMS"
   
   />
   
6. <
   
   application
   
7. android:
   
   allowBackup=
   
   "true"
   
8. android:
   
   icon=
   
   "@mipmap/ic_launcher"
   
9. android:
   
   label=
   
   "@string/app_name"
   
10. android:
    
    roundIcon=
    
    "@mipmap/ic_launcher_round"
    
11. android:
    
    supportsRtl=
    
    "true"
    
12. android:
    
    theme=
    
    "@Style/AppTheme"
    
    >
    
13. <
    
    activity android:
    
    name=
    
    ".MainActivity"
    
14. android:
    
    configChanges=
    
    "orientation"
    
15. android:
    
    screenOrientation=
    
    "portrait"
    
    >
    
16. <
    
    intent-
    
    filter>
    
17. <
    
    action android:
    
    name=
    
    "android.intent.action.MAIN"
    
    />
    
18. 
    
19. <
    
    category android:
    
    name=
    
    "android.intent.category.LAUNCHER"
    
    />
    
20. </
    
    intent-
    
    filter>
    
21. </
    
    activity>
    
22. </
    
    application>
    
23. </
    
    manifest>
    

The Main Function

This code contains the main function of the application. This code will sent some sms data to the number that input, this will only work when there is an available network . To start with first locate your MainActivity java file and open it, then write these variable inside the MainActivity class.

1. Button
   
   btn_send;
   
2. EditText et_contact, et_message;
   

Then write these method to make the code work correctly.

1. private
   
   void
   
   PermissionToConnect(
   
   )
   
   {
   
2. if
   
   (
   
   ContextCompat.checkSelfPermission
   
   (
   
   MainActivity.this
   
   , Manifest
   
   .permission
   
   .SEND_SMS
   
   )
   
   !=
   
   PackageManager.PERMISSION_GRANTED
   
   )
   
   {
   
3. if
   
   (
   
   ActivityCompat.shouldShowRequestPermissionRationale
   
   (
   
   MainActivity.this
   
   , Manifest
   
   .permission
   
   .SEND_SMS
   
   )
   
   )
   
   {
   
4. ActivityCompat.requestPermissions
   
   (
   
   MainActivity.this
   
   , new
   
   String
   
   [
   
   ]
   
   {
   
   Manifest
   
   .permission
   
   .SEND_SMS
   
   }
   
   , 1
   
   )
   
   ;
   
5. }
   
   else
   
   {
   
6. ActivityCompat.requestPermissions
   
   (
   
   MainActivity.this
   
   , new
   
   String
   
   [
   
   ]
   
   {
   
   Manifest
   
   .permission
   
   .SEND_SMS
   
   }
   
   , 1
   
   )
   
   ;
   
7. }
   
8. }
   
9. 
   
10. }
    
11. 
    
12. @Override
    
13. public
    
    void
    
    onRequestPermissionsResult(
    
    int
    
    requestCode, String
    
    [
    
    ]
    
    permissions, int
    
    [
    
    ]
    
    grantResults)
    
    {
    
14. if
    
    (
    
    requestCode ==
    
    1
    
    )
    
    {
    
15. if
    
    (
    
    grantResults.length
    
    >
    
    0
    
    &&
    
    grantResults[
    
    0
    
    ]
    
    ==
    
    PackageManager.PERMISSION_GRANTED
    
    )
    
    {
    
16. if
    
    (
    
    ContextCompat.checkSelfPermission
    
    (
    
    MainActivity.this
    
    , Manifest
    
    .permission
    
    .SEND_SMS
    
    )
    
    ==
    
    PackageManager.PERMISSION_GRANTED
    
    )
    
    {
    
17. Toast.makeText
    
    (
    
    this
    
    , "Access"
    
    , Toast.LENGTH_SHORT
    
    )
    
    .show
    
    (
    
    )
    
    ;
    
18. }
    
19. }
    
    else
    
    {
    
20. Toast.makeText
    
    (
    
    this
    
    , "Denied"
    
    , Toast.LENGTH_SHORT
    
    )
    
    .show
    
    (
    
    )
    
    ;
    
21. }
    
22. }
    
23. }
    

Finally, initialize the require methods inside the onCreate method to run the application.

1. btn_send =
   
   (
   
   Button
   
   )
   
   findViewById(
   
   R.id
   
   .btn_send
   
   )
   
   ;
   
2. et_contact =
   
   (
   
   EditText)
   
   findViewById(
   
   R.id
   
   .et_contact
   
   )
   
   ;
   
3. et_message =
   
   (
   
   EditText)
   
   findViewById(
   
   R.id
   
   .et_message
   
   )
   
   ;
   
4. 
   
5. PermissionToConnect(
   
   )
   
   ;
   
6. 
   
7. btn_send.setOnClickListener
   
   (
   
   new
   
   View
   
   .OnClickListener
   
   (
   
   )
   
   {
   
8. @Override
   
9. public
   
   void
   
   onClick(
   
   View
   
   v)
   
   {
   
10. String
    
    number =
    
    et_contact.getText
    
    (
    
    )
    
    .toString
    
    (
    
    )
    
    ;
    
11. String
    
    message =
    
    et_message.getText
    
    (
    
    )
    
    .toString
    
    (
    
    )
    
    ;
    
12. 
    
13. try
    
    {
    
14. SmsManager smsManager =
    
    SmsManager.getDefault
    
    (
    
    )
    
    ;
    
15. smsManager.sendTextMessage
    
    (
    
    number, null
    
    , message, null
    
    , null
    
    )
    
    ;
    
16. Toast.makeText
    
    (
    
    MainActivity.this
    
    , "Sent"
    
    , Toast.LENGTH_SHORT
    
    )
    
    .show
    
    (
    
    )
    
    ;
    
17. }
    
    catch
    
    (
    
    Exception
    
    e)
    
    {
    
18. Toast.makeText
    
    (
    
    MainActivity.this
    
    , "Sending Failed"
    
    , Toast.LENGTH_SHORT
    
    )
    
    .show
    
    (
    
    )
    
    ;
    
19. }
    
20. 
    
21. }
    
22. }
    
    )
    
    ;
    

Try to run the app and see if it worked.

There you have it we have created a Simple Sending SMS using Android. I hope that this tutorial help you to what you are looking for. For more updates and tutorials just kindly visit this site. Enjoy Coding!!!

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