Develop Reference

Android Broadcast SMS

I want open App when receive SMS.
I try to handle this problem using Manifest-declared receivers.
Here is my code
<AndroidManifest.xml>
<receiver
android:name=".service.SMSReceiver"
android:enabled="true"
android:exported="true"
android:permission="android.permission.BROADCAST_SMS">
<intent-filter>
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
#Override
public void onReceive(Context context, Intent intent) {
packageManager = context.getPackageManager();
if("android.provider.Telephony.SMS_RECEIVED".equals(intent.getAction())) {
Bundle bundle = intent.getExtras();
Object[] messages = (Object[]) bundle.get("pdus");
for (Object pdu : messages)
{
SmsMessage message = SmsMessage.createFromPdu((byte[]) pdu);
if(message == null)
{
Log.e(TAG,"message is null");
break;
}
smsSender = message.getDisplayOriginatingAddress();
if(smsSender.compareTo(number)==0)
{
receivedData = new Date(message.getTimestampMillis());
smsBody = message.getDisplayMessageBody();
Log.i(TAG, "onReceive: "+smsBody);
SendToActivity(context,smsSender,smsBody,receivedData);
}
}
}
}
private void SendToActivity(Context context, String sender, String contents, Date receivedDate) {
Log.i(TAG, "SendToActivity: TEST ");
Intent intent = new Intent(context, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK|
Intent.FLAG_ACTIVITY_SINGLE_TOP|
Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.putExtra("contents",contents);
context.startActivity(intent);
Log.i(TAG, "SendToActivity: RUN >> ");
}
this code works only when app is onPause().
I want to work even app is terminated.
Is possible that terminated app open automatically when SMS received at Android 9?

No, you can't do this. There are certain limitations that Android had put on the Broadcast Receivers.
There are certain broadcasts that Apps can't listen to, and it includes the SMS broadcast too.
You can find more about here
There are some broadcasts which your app can listen to when terminated, you can find the list here

Starting an Android service from system's SMS broadcast receiver

Can anyone please tell me if it is possible to "wake up" my Android service as soon as there's an incoming SMS event? What I meant to say is that, whenever an SMS is received, there will be a system-wide broadcast of this event. Can I intercept this broadcast to start my own background service? I know, it's not possible to run my service permanently in the background (not to mention it's a bad design practice).
Any help would be highly appreciated!
EDIT: Adding more detail to my original question. My broadcast receiver will be wrapped inside a service class. But there is a chance the Android will kill my background service in the event of memory crunch. In that case, even if there is an incoming SMS, my service won't be fired. How can I deal with this situation? This was the main intent of the question. I know it's not possible to run my service permanently in the background (or is it possible? perhaps if I have root access?)

Create Broadcast Receiver
public class BrodcastReceiverClass extends BroadcastReceiver
{
#Override
public void onReceive(Context context, Intent intent) {
final Bundle bundle = intent.getExtras();
try {
if (bundle != null) {
final Object[] pdusObj = (Object[]) bundle.get("pdus");
for (int i = 0; i < pdusObj.length; i++) {
SmsMessage currentMessage = SmsMessage.createFromPdu((byte[]) pdusObj[i]);
String phoneNumber = currentMessage.getDisplayOriginatingAddress();
String senderNum = phoneNumber;
String message = currentMessage.getDisplayMessageBody();
try {
if (senderNum.equals("MD-DOCOMO")){ //SMS Provider Name
OTPActivity Sms = new OTPActivity();
Sms.recivedSms(message);
}
} catch (Exception e) {
}
}
}
} catch (Exception e) {
}
}
}
Register BrodcastReceiver in your manifest
<receiver android:name=".BrodcastReceiverClass ">
<intent-filter>
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
call in you activity for e.g your activity name is OTPActivity than write thi code in your OTPActivity.
public void recivedSms(String message) {
try {
Log.d("message is receive", message);
} catch (Exception e) {
Log.e("message not receive", e.getMessage() + "");
}
}
Add permission in manifest read sms
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.RECEIVE_SMS" />

Using android device as a remote control

I want to make an aaplication that has the feature of controlling my phone from remotely.Such as on/off GPS through text message from another phone.Getting the location from phone via text message.
Is it possible to on/off gps through text message from another phone?

Definitely yes.
You just need to add in you application a receiver for the Action android.provider.Telephony.SMS_RECEIVED and parse the message text if you recognize ac command in your phone, you execute some code.
Basically you need to do three things:
Update you manifest abd add permission for your application to receive SMS:
<uses-permission android:name="android.permission.RECEIVE_SMS"/>
Then you have to add, again in the manifest a receiver, that receive the SMS_RECEIVED Action, in a way similar to the following:
<receiver android:name=".SMSReceiver" android:enabled="true" >
<intent-filter>
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
Where android.name is the name of your Receiver class.
And finally you have to implement that class, that extends BroadCastReceiver and has at least the onReceive Method implemented.
public class SmsReceiver extends BroadcastReceiver {
public void onReceive(Context context, Intent intent) {
}
}
For your help, below there an example onReceive code:
#Override
public void onReceive(Context context, Intent intent) {
Bundle bundle = intent.getExtras();
Object[] pdus = (Object[])bundle.get("pdus");
SmsMessage[] messages = new SmsMessage[pdus.length];
for(int i = 0; i < pdus.length; i++){
messages[i] = SmsMessage.createFromPdu((byte[]) pdus[i]);
}
for(SmsMessage message: messages){
String messagestr = message.getMessageBody();
String sender = message.getOriginatingAddress();
Toast.makeText(context, sender + ": " + messagestr, Toast.LENGTH_SHORT).show();
}
}
That code, read the message content and show it on a Toast. You can find a full working example here: https://github.com/inuyasha82/ItalialinuxExample/tree/master/LezioniAndroid

Recieving (handling) SMS-es is possible with Android. Your software should read the SMS, then decide if it contains command and turn off the GPS like normal app would.
This link shows how http://www.apriorit.com/dev-blog/227-handle-sms-on-android

Listening to incoming texts, in the background

I'm trying to make my application listen to incoming text messages, in a persistent manner. What would be the best approach for this?
Currently, I've got a working BroadcastReceiver and I'm playing around with implementing a local service for my app. Is somehow implementing the BroadcastReceiver into the service the correct way of doing this? Will the service work in a low memory condition?

Yes broadcast receiver is best way for listening to incoming texts.if an incoming sms recvied use IntentService for your work what u want to do on sms recived.u can register a reciver for incoming sms as:
manifest file
<receiver class="SMSApp">
<intent-filter>
<action android:value="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
<uses-permission android:name="android.permission.RECEIVE_SMS" />
Java File
public class SMSApp extends BroadcastReceiver{
private static final String LOG_TAG = "SMSApp";
/* package */
static final String ACTION = "android.provider.Telephony.SMS_RECEIVED";
public void onReceive(Context context, Intent intent){
if (intent.getAction().equals(ACTION)){
Bundle bundle = intent.getExtras();
if (bundle != null){
Object[] pdus = (Object[]) bundle.get("pdus");
SmsMessage[] messages = new SmsMessage[pdus.length];
for (int i = 0; i < pdus.length; i++){
messages[i] = SmsMessage.createFromPdu((byte[]) pdus[i]);
}
for (SmsMessage message : messages){
String strFrom = message.getDisplayOriginatingAddress();
String strMsg = message.getDisplayMessageBody();
}
}
}
}
}
and second way you can register a ContentObserver for content://sms/inbox for listening incoming sms in inbox

The broadcast receiver does not need your application to be started, hence is the correct way of listening to incoming texts.
Just make sure to register it in the Manifest

How to handle Service Information in Android

Operator can send Service Information message to phone user. It appears as notification window. My operator for example sends spent and left money after every call. It uses these Service Information for that.
Is there a way to handle that message?

If they are SMS (The case I see with operators around me).
Simple add an intent filter to your manifest:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="org.example">
<uses-permission id="android.permission.RECEIVE_SMS" />
<application>
<receiver class="SMSApp">
<intent-filter>
<action android:value="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
</application>
</manifest>
and just extends android.content.IntentReceiver and implement the onIntentReceived method as follows:
public void onReceiveIntent(Context context, Intent intent) {
if (intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")) {
Bundle bundle = intent.getExtras();
if (bundle != null) {
SmsMessage[] messages = Telephony.Sms.Intents.getMessagesFromIntent(intent);
for (int i = 0; i < messages.length; i++) {
SmsMessage message = messages[i];
System.out.println("Received SMS from: "+message.getDisplayOriginatingAddress());
System.out.println(message.getDisplayMessageBody());
}
}
}

I think that in the similar way parsing of USSD services is working. Have a look into the class that parses USSD reply: http://codepaste.ru/7545/. I hope this will help you. Good luck!