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how to send sms automatically in android

i am using this code to send sms automatically but is not working ,i am able to send sms by using intent
SmsManager sms = SmsManager.getDefault();
PendingIntent sentPI;
String SENT = "SMS_SENT";
sentPI = PendingIntent.getBroadcast(this, 0,new Intent(SENT), 0);
sms.sendTextMessage("+91"+"**********", null, "hii param", sentPI, null);
Toast.makeText(getApplicationContext(), "Your sms sent check your inbox",Toast.LENGTH_LONG).show();

Use Permissions in your Android.manifest file like this
<uses-permission android:name="android.permission.SEND_SMS"/>
And then invoke the SmsManager i.e
SmsManager managerForSms = SmsManager.getDefault();
managerForSms.sendTextMessage("Your text message");
Or you may refer to this Stack's question How to send sms in Android. (See accepted Answer)

Try this code,
public void sendSMS(String phoneNo, String msg){
try {
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(phoneNo, null, msg, null, null);
}
catch (Exception ex) {
ex.printStackTrace();
}
}
And use this permission in your manifest file
<uses-permission android:name="android.permission.SEND_SMS" />
Update:
Add your country code before pass the phone number
String phoneNo="+91"+editText.getText().toString();
Update 2:
Another possible cause for not working
If u are testing this code in dual sim phone then sim slot 1 always keep active otherwise it " no service" error.
reference - https://stackoverflow.com/a/32090923/3879847

Code Which works for me is this.. Before you need to provide permission in manifest and also need to ask during runtime
<uses-permission android:name="android.permission.SEND_SMS" />
and in Activity
runOnUiThread(new Runnable() {
#Override
public void run() {
String number = SMSEditText.getText().toString();
try {
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(number, null, Message, null, null);
} catch (Exception e) {
e.printStackTrace();
}
}
});
also if message lenght is greater than 140 or something.. you need to split the message otherwise. it wont work .. which can be acheived by mulitpart text message

Send SMS for Missed Calls only once Android Eclipse

i want to send a sms once. if already sent i want to skip the code or somthing.
Log.i("Send SMS", "");
String phoneNo = incomingNumber;
String newN = incomingNumber;
if (newN!=oldN)
{
SmsManager smsManager = SmsManager.getDefault();
String message = "im on a meeting call you later -ExAutoSmS-";
try {
smsManager.sendTextMessage(phoneNo, null, message, null, null);
oldN = incomingNumber;
} catch (Exception e) {
e.printStackTrace();
}
}

# RAJITHA first create shared preferences then check every time before sending an sms if there is no number exist in shared preference..
But remember shared preference store number till you didn't clear or delete the app.. so after finish your task clear the saved no from preferences..
Hope you helped..enter link description here

SMS not sending in android

i am trying to send an sms text message with my android application, however i am receiving nothing when i run it
here is the code
int minSms = 100001;
int maxSms = 999998;
Random rSms = new Random();
int iSms = rSms.nextInt(maxSms - minSms +1) + minSms;
try {
SmsManager sms = SmsManager.getDefault();
PendingIntent sentPI;
String SENT = "SMS_SENT";
sentPI = PendingIntent.getBroadcast(getActivity(), 0,new Intent(SENT), 0);
sms.sendTextMessage(mobileNumber, null, Integer.toString(iSms), sentPI, null);
Toast.makeText(getActivity(), "SMS sent.",
Toast.LENGTH_SHORT).show();
} catch (Exception e) {
Toast.makeText(getActivity(),
"SMS failed, please try again.",
Toast.LENGTH_LONG).show();
e.printStackTrace();
}
I am testing with my own mobile number which i am not going to share but it is in the format 07789123456
Do i need to add any area codes with it, or should it work with the straight 11 digit number?

Please take a look at SMS Manager send mutlipart message when there is less than 160 characters . Im pretty sure the text you want to send is to long. Depending on the alphabet (i.e. including emojis) you are using, the message is limited to 70 characters. You have to split the message into a multipart message:
SmsManager sms = SmsManager.getDefault();
ArrayList<String> parts = sms.divideMessage(longMessage);
sms.sendMultipartTextMessage(phoneNumber, null, parts, null, null);

Send SMS with out saving it in sent item in kitkat

I am developing an application which needs to send SMS.
I am using SmsManager.SendTextMessage and SmsManager.sendMultipartTextMessage , Both of them are working well , the main problem is sent message will be saved on sent items(only in Kitkat , the older version don't save SMS) , but I don't need to save message.
My app is default messageing app.
What should I do to prevent saving SMS in kitkat?
Here is my code:
try
{
SmsManager smsManager = SmsManager.getDefault();
String body ="Test";
String to = "5556";
ArrayList<String> parts =smsManager.divideMessage(body);
smsManager.sendMultipartTextMessage(to,null, parts, null, null);
}
catch(Exception ex)
{
Toast.makeText(this, ex.getMessage(), Toast.LENGTH_LONG).show();
}

The code for the prompt after using sendTextMessage

I want to develop a project to send text messages in android using sendTextMessage() from android.telephony.SmsManager. When the message is sent a prompt appears. I want to know where can I find that code?

try below code:-
buttonSend.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
String phoneNo = textPhoneNo.getText().toString();
String sms = textSMS.getText().toString();
try {
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(phoneNo, null, sms, null, null);
Toast.makeText(getApplicationContext(), "SMS Sent!",
Toast.LENGTH_LONG).show();
} catch (Exception e) {
Toast.makeText(getApplicationContext(),
"SMS faild, please try again later!",
Toast.LENGTH_LONG).show();
e.printStackTrace();
}
}
});

I believe you have not search it:
Question : Sending text messages programmatically in android already exists.
you can try this code also:
public void sendLongSMS() {
String phoneNumber = "0123456789";
String message = "Hello World! Now we are going to demonstrate " +
"how to send a message with more than 160 characters from your Android application.";
SmsManager smsManager = SmsManager.getDefault();
ArrayList<String> parts = smsManager.divideMessage(message);
smsManager.sendMultipartTextMessage(phoneNumber, null, parts, null, null);
}
Code for Toast(prompt)
Toast.makeText(getContext(), "Your message",Toast.LENGTH_LONG).show();
Sms Manager
Toasts
Read this : What types of questions should I avoid asking? before asking question here.