Develop Reference

Can't read SMS on android

I can't seem to get a basic sms reading app to work on android. Not sure what am I missing here. I think I have all the basic minimum specified in the code, despite that it seems to be not working. The onReceive() of SmsReceiver is never invoked. All the required permissions are set.
Here are my files.
MainActivity.java
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
//...
//...
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
requestReadAndSendSmsPermission();
smsReceiver = new SmsReceiver() {
#Override
protected void onData(String data) {
//handle
}
};
IntentFilter intentFilter = new IntentFilter("android.provider.Telephony.SMS_RECEIVED");
//intentFilter.setPriority(999);
registerReceiver(smsReceiver, intentFilter);
}
#Override
protected void onDestroy() {
super.onDestroy();
unregisterReceiver(smsReceiver);
}
private void requestReadAndSendSmsPermission() {
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.READ_SMS},1);
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.RECEIVE_SMS},1);
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.SEND_RESPOND_VIA_MESSAGE}, 1);
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.SEND_SMS}, 1);
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.ACCESS_NETWORK_STATE}, 1);
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.CHANGE_NETWORK_STATE}, 1);
ActivityCompat.requestPermissions(this,new String[]{Manifest.permission.INTERNET}, 1);
}
//...
//...
}
SmsReceiver.java
public abstract class SmsReceiver extends BroadcastReceiver {
private static final String TAG = "SmsReceiver";
#Override
public void onReceive(Context context, Intent intent) {
if (context == null || intent == null) {
return;
}
String action = intent.getAction();
if (!action.equals(Telephony.Sms.Intents.SMS_RECEIVED_ACTION)) {
return;
}
//read sms
onData("sms received");
}
protected abstract void onData(String data);
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mysmsapp">
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.SEND_RESPOND_VIA_MESSAGE_SMS" />
<uses-permission android:name="android.permission.SEND_SMS" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.MySMSApp">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

You are missing defining the receiver entry in AndroidManifest.xml file for your BroadcastReceiver named SmsReceiver please make the entry for it else OS will not know if you have a broadcast receiver waiting to be triggered.
Depending upon what is your use case it might be something like
<receiver
android:name=".SmsReceiver"
android:exported="true"
android:permission="com.google.android.gms.auth.api.phone.permission.SEND">
<intent-filter>
<action android:name="com.google.android.gms.auth.api.phone.SMS_RETRIEVED"/>
</intent-filter>
</receiver>
Or
<receiver
android:name=". SmsReceiver"
android:permission="android.permission.BROADCAST_SMS">
<intent-filter>
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
Note: These receiver are sample receiver please use the correct one as per your use case, the main point is you are missing receiver entry in your manifest file

i use this code to read incoming message
public class SmsReceiver extends BroadcastReceiver {
private static final Uri smsuri = Apconsts.smsuri;
private static final String pdu_type = "pdus";
#Override
public void onReceive(Context context, Intent intent){
// Get the SMS message.
Bundle bundle = intent.getExtras();
SmsMessage[] msgs;
String format = bundle.getString("format");
// Retrieve the SMS message received.
Object[] pdus = (Object[]) bundle.get(pdu_type);
String body="";String adrs="";
if (pdus != null) {
msgs = new SmsMessage[pdus.length];
for (int i = 0; i < msgs.length; i++){
if(Build.VERSION.SDK_INT < 23){ msgs[i] = SmsMessage.createFromPdu((byte[]) pdus[i]); }
else{ msgs[i] = SmsMessage.createFromPdu((byte[]) pdus[i], format); }
adrs=msgs[i].getOriginatingAddress();
body += ""+msgs[i].getMessageBody();
}
Toast.makeText(getApplicationContext(), "The message Body: "+body+"\nThe address: "+adrs, Toast.LENGTH_LONG).show();
}
}
}
and this receiver in manifest
<receiver android:name=".SmsReceiver"
android:permission="android.permission.BROADCAST_SMS">
<intent-filter>
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>

Android: Receive and forward text message from service

I am trying to make a simple app that will forward all messages with particular body to another number.
Broadcast receiver in my class is not being called. Any leads will be appreciated
MainActivity.java
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Settings.Applog("App started !!");
Intent intent = new Intent(this, SMSService.class);
startService(intent);
}
SMSService.java
public class SMSService extends Service {
private IntentFilter mIntentFilter;
private SMSreceiver mSMSreceiver;
#Nullable
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public void onCreate()
{
super.onCreate();
Settings.Applog("Service started !!");
//SMS event receiver
mSMSreceiver = new SMSreceiver();
mIntentFilter = new IntentFilter();
mIntentFilter.addAction("android.provider.Telephony.SMS_RECEIVED");
registerReceiver(mSMSreceiver, mIntentFilter);
}
#Override
public void onDestroy()
{
super.onDestroy();
// Unregister the SMS receiver
unregisterReceiver(mSMSreceiver);
}
private String ConvertNumber(String from){
return from;
}
public class SMSreceiver extends BroadcastReceiver
{
private final String TAG = this.getClass().getSimpleName();
#Override
public void onReceive(Context context, Intent intent)
{
Bundle bundle = intent.getExtras();
String strMessage = "";
Settings.Applog("Got a message!!");
if ( bundle != null )
{
try{
Object[] pdus = (Object[]) bundle.get("pdus");
SmsMessage[] msgs = new SmsMessage[pdus.length];
for(int i=0; i<msgs.length; i++){
msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
String msg_from = msgs[i].getOriginatingAddress();
String msgBody = msgs[i].getMessageBody();
Settings.Applog("Message body ::"+msgBody);
}
}catch(Exception e){
//Log.d("Exception caught",e.getMessage());
}
}
}
}
}
Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="mypackage">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<uses-permission android:name="android.permission.WRITE_SMS" />
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name=".SMSService"
android:exported="false">
</service>
</application>
</manifest>

You have to register the Broadcast Receiver for receiving SMS in the manifest file.
Just the permission will not work.
Inside the application tag it would look something like:
<application android:icon="#drawable/icon" android:label="#string/app_name" android:debuggable="true" >
<receiver android:name=".SMSBroadcastReceiver">
<intent-filter>
<action android:name="android.provider.telephony.SMS_RECEIVED"></action>
</intent-filter>
</receiver>
</application>
Use this as an example for receiving the SMS message. It should be a good starting point.
http://javapapers.com/android/android-receive-sms-tutorial/

Service stopped when app is swiped out from recent apps in Android

I am making a very simple app in which I want that a service should run infinitely just like Whatsapp service runs in background, even if the app is removed from Recent Apps by swiping out.
Below is my code.
AndroidManifest.xml:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.net.gs.servicetesting" >
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name=".MyService"
android:process=":com">
<intent-filter>
<action
android:name="com.net.gs.servicetesting.MyService" />
</intent-filter>
</service>
</application>
</manifest>
MyService.java:
public class MyService extends Service {
private String TAG = "MyService";
#Override
public IBinder onBind(Intent intent) {
return null;
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.d(TAG,"Service Strated");
return START_STICKY;
}
#Override
public void onDestroy() {
Log.d(TAG,"Service Destoryed");
super.onDestroy();
}
}
MainActivity.java:
public class MainActivity extends ActionBarActivity {
String TAG = "MainActivity";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.d(TAG, "Activity Strated");
startService(new Intent(MyService.class.getName()));
}
}

In your Service#onStartCommand method store the starting intent to a field variable, let's say mIntent.
Then implement the Service#onTaskRemoved method like this:
#Override
#TargetApi(14)
public void onTaskRemoved(Intent rootIntent) {
startService(mIntent);
}

No Activity Found to handle Intent in the class file

I am pretty new to Android. I am learning about passing Intents within activities. Here is my code to pass Intent between 2 activties.
MainActivity.java
public class MainActivity extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button b1 = (Button)findViewById(R.id.btOk);
b1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
EditText etName = (EditText)findViewById(R.id.etName);
String Data = etName.getText().toString();
Intent i = new Intent("com.adhish.passingintentdata.layout2");
Bundle extras = new Bundle();
extras.putString("Name", Data);
i.putExtras(extras);
startActivityForResult(i,1);
}
});
}
layout2.java
public class layout2 extends ActionBarActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_layout2);
String myName = null;
Bundle extras = getIntent().getExtras();
if(extras != null)
{
myName = extras.getString("Name");
}
TextView tvData = (TextView)findViewById(R.id.tvData);
tvData.setText(myName);
}
}
Manifest.xml
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".layout2"
android:label="#string/title_activity_layout2"
android:parentActivityName=".MainActivity" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.adhish.passingintentdata.MainActivity" />
</activity>
When i run this code and click on the OK button to pass the data, my app crashes with a fatal error.
The error is:
android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.adhish.passingintentdata.layout2 (has extras) }
Please give me a detailed help about working with this issue, because I am new to Android.
Thanks.

Use com.adhish.passingintentdata.MainActivity as Action string for creating Intent to launch layout2 Activity :
Intent i = new Intent("com.adhish.passingintentdata.layout2");
and in Manifast add intent-filter for layout2 Activity:
<intent-filter>
<action android:name="com.adhish.passingintentdata.layout2" />
</intent-filter>

Use this intent instead:
Intent i = new Intent(MainActivity.this, layout2.class);

How to force android to start LoginActivity

I want to force my app to run the LoginActivity if there is no account present.
I've done the following but still when I launch the app in the emulator, I have MainActivityTest coming up.
For now I have no Account for my app on the emulator so I expect to simply see the Login screen. However, what I see seems like the MainActivityTest is running
public class AccountAuthenticator extends AbstractAccountAuthenticator {
private Context context;
private static final String TAG = "AccountAuthenticator";
public AccountAuthenticator(final Context context) {
super(context);
this.context = context;
}
#Override
public Bundle addAccount(final AccountAuthenticatorResponse response,
final String accountType, final String authTokenType,
final String[] requiredFeatures, final Bundle options) throws NetworkErrorException {
final Intent intent = new Intent(context, LoginActivity.class);
final Bundle bundle = new Bundle();
bundle.putParcelable(KEY_INTENT, intent);
return bundle;
}
...
}
public class AccountAuthenticatorService extends Service {
private static AccountAuthenticator AUTHENTICATOR;
public IBinder onBind(Intent intent) {
return intent.getAction().equals(ACTION_AUTHENTICATOR_INTENT) ? getAuthenticator()
.getIBinder() : null;
}
private AccountAuthenticator getAuthenticator() {
if (AUTHENTICATOR == null)
AUTHENTICATOR = new AccountAuthenticator(this);
return AUTHENTICATOR;
}
}
public class LoginActivity extends RoboSherlockAccountAuthenticatorActivity {
#Override
public void startActivity(Intent intent) {
if (intent != null && ACTION_VIEW.equals(intent.getAction()))
intent.addCategory(CATEGORY_BROWSABLE);
super.startActivity(intent);
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login);
}
}
My AndroidManifest.xml is like below
<application
android:icon="#drawable/ic_launcher"
android:label="myapp" >
<activity
android:name=".ui.ui.MainActivityTest"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service
android:name="com.myapp.AccountAuthenticatorService"
android:exported="false"
android:process=":auth" >
<intent-filter>
<action android:name="android.accounts.AccountAuthenticator" />
</intent-filter>
<meta-data
android:name="android.accounts.AccountAuthenticator"
android:resource="#xml/authenticator" />
</service>
<activity
android:name="com.myapp.LoginActivity"
android:configChanges="orientation|keyboardHidden|screenSize"
android:excludeFromRecents="true" >
<!--
No intent-filter here! This activity is only ever launched by
someone who explicitly knows the class name
-->
</activity>
</application
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.MANAGE_ACCOUNTS" />
<uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS" />
<uses-permission android:name="android.permission.READ_SYNC_SETTINGS" />
<uses-permission android:name="android.permission.READ_SYNC_STATS" />
<uses-permission android:name="android.permission.USE_CREDENTIALS" />
<uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS" />

It would be simple if you put value in shared preference once if you complete login process.
and every time when you launch application, once check the sharedpreference value and navigate to activities
Boolean mobile_register_flag = sharedpref.getBoolean("mobile_register_flag", false);
if (!mobile_register_flag) {
Intent intent = new Intent(FlashView.this,
RegisterActivity.class);
startActivity(intent);
} else {
Intent intent = new Intent(FlashView.this,
ActivityTwo.class);
startActivity(intent);
}

When you launch the app in the emulator, MainActivityTest coming up because your AndroidManifest has:
<activity
android:name=".ui.ui.MainActivityTest"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
If you want to launch LoginActivity by default, use
<activity
android:name="com.myapp.LoginActivity"
android:configChanges="orientation|keyboardHidden|screenSize"
android:excludeFromRecents="true" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
Else, if you want to display LoginActivity as the first activity based on some conditions, then
In android manifest, keep MainActivityTest as the default
activity
In MainActivityTest->onCreate, check the condition
and if condition is true, launch LoginActivity