How to check user entered own phone number in EditText?

Question

Mobile number will be entered in an edittext by user on registration page in my Android application. How can I check that user entered his/her mobile number not other's ? I've tried this : ``` TelephonyManager tMgr =(TelephonyManager)mAppContext.getSystemService(Context.TELEPHONY_SERVICE); mPhoneNumber = tMgr.getLine1Number(); ``` And compare this variable with edittext's text. But mPhoneNumber returns NULL in my case. Is there any other options? How to solve this ? Any help would be appreciable. I have tried this : Check source code : ``` public class MainActivity extends Activity{ Button submit; EditText contact; String phNo; ProgressDialog progress; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); contact = (EditText)findViewById(R.id.mobileNumber); submit = (Button) findViewById(R.id.button1); submit.setOnClickListener(new OnClickListener() { public void onClick(View v) { phNo = contact.getTe…

Accepted Answer

I solved it my self. Here is my working code. MainActivity Class :

```
   public class MainActivity extends Activity
{    
    Button submit;
    EditText contact;
    static String phNo;
    ProgressDialog progress;
    static Boolean wasMyOwnNumber;
    static Boolean workDone;
    final static int SMS_ROUNDTRIP_TIMOUT = 30000;

@Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        contact = (EditText)findViewById(R.id.mobileNumber);
        submit = (Button) findViewById(R.id.button1);
        wasMyOwnNumber = false;
        workDone = false;
        submit.setOnClickListener(new OnClickListener()
        {
                public void onClick(View v)
                {
                    phNo = contact.getText().toString();
                    new CheckOwnMobileNumber().execute();
                }
        });
    }

private class CheckOwnMobileNumber extends AsyncTask<String, Void, String>
    {
        @Override
        protected void onPostExecute(String result)
        {
            // TODO Auto-generated method stub
            if(progress.isShowing())
            {
                progress.dismiss();
                if(wasMyOwnNumber)
                {
                    Toast.makeText(getApplicationContext(), "Number matched.", Toast.LENGTH_LONG).show();
                    wasMyOwnNumber = false;
                    workDone = false;
                }
                else
                {
                    Toast.makeText(getApplicationContext(), "Wrong number.", Toast.LENGTH_LONG).show();
                    wasMyOwnNumber = false;
                    workDone = false;
                    return;
                }
            }
            super.onPostExecute(result);
        }

@Override
        protected String doInBackground(String... params)
        {
            // TODO Auto-generated method stub
            String msg = phNo;
            try
            {
                SmsManager sms = SmsManager.getDefault();
                sms.sendTextMessage(phNo, null, msg, null, null);
                timeout();
            }
            catch(Exception ex)
            {
                Log.v("Exception :", ""+ex);
            }
            return null;
        }

@Override
        protected void onPreExecute() 
        {
            // TODO Auto-generated method stub
            progress = ProgressDialog.show(MainActivity.this, "","Checking Mobile Number...");
            progress.setIndeterminate(true);
            progress.getWindow().setLayout(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
            super.onPreExecute();
        }
    }

private boolean timeout()
    {
           int waited = 0;
           while (waited < SMS_ROUNDTRIP_TIMOUT)
           {
              try
              {
                Thread.sleep(100);
              }
              catch (InterruptedException e)
              {
                // TODO Auto-generated catch block
                e.printStackTrace();
              }
              waited += 100;
              if(phoneNumberConfirmationReceived())
              {
                  waited=SMS_ROUNDTRIP_TIMOUT;
                  workDone = true;
              }
           }
           /*Log.v("MainActivity:timeout2: Waited: " , ""+waited);
           Log.v("MainActivity:timeout2:Comparision: ", ""+ phoneNumberConfirmationReceived());
           Log.v("MainActivity:timeout2: WorkDone value after wait complete : ", ""+workDone);*/
        return workDone;
    }

private boolean phoneNumberConfirmationReceived()
    {
        if(wasMyOwnNumber)
        {
            workDone = true;
        }
        return workDone;
    }
}
```

SMSReceiver Code :

```
 public class SMSReceiver extends BroadcastReceiver
{
    private static final String ACTION_SMS_RECEIVED = "android.provider.Telephony.SMS_RECEIVED";
    Context mContext;
    private Intent mIntent;
    static String address, str = null;
    boolean isSame;

// Retrieve SMS
    public void onReceive(Context context, Intent intent)
    {
        mContext = context;
        mIntent = intent;
        String action = intent.getAction();
        if(action.equals(ACTION_SMS_RECEIVED))
        {
            SmsMessage[] msgs = getMessagesFromIntent(mIntent);
            if (msgs != null)
            {
                for (int i = 0; i < msgs.length; i++)
                {
                    address = msgs[i].getOriginatingAddress();
                    str = msgs[i].getMessageBody().toString();
                }
            }
            Log.v("Originating Address : Sender :", ""+address);
            Log.v("Message from sender :", ""+str);
            isSame = PhoneNumberUtils.compare(str, MainActivity.phNo);
            Log.v("Comparison :", "Yes this true. "+isSame);
            if(isSame)
            {
                 MainActivity.wasMyOwnNumber = isSa…

How to check user entered own phone number in EditText?

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