I am creating an app that takes String’s input by the user via EditText, puts them into a sharedpreference and then sends an automatic sms when an sms is received, using the strings from the sharedpreference to dictate the phone number and text message that will be automatically sent.
The app works perfectly as long as I hardcode the phone number and the text message to be sent. As soon as I try and put the Strings from the shared preferences into the SendSMS method then the app crashes and I get a debug error “hasUserDataHeader : false”
The below code is the version where i try to take the String from the Name EditText and use it as the message to be sent via the parameter TextMessage (see within the broadcast receiver for this line of code). If i were to replace this with “TextMessage” then it would be fine but obviously this doesn’t make the text sent dynamic
Code below:
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.Button;
import android.app.PendingIntent;
import android.content.Intent;
import android.telephony.SmsManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.IntentFilter;
import android.widget.TextView;
import android.app.Notification;
import android.app.NotificationManager;
import android.content.SharedPreferences;
public class MainActivity extends Activity {
int notificationID = 1;
String[] excuses;
String excuseSelected;
IntentFilter intentFilter;
private SharedPreferences prefs;
private String prefName = "MyPref";
private static final String NUMBER_KEY = "number";
private static final String NAME_KEY = "name";
private static final String EXCUSE_KEY = "excuse";
private BroadcastReceiver intentReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
//---gather up all the necessary user input---
prefs = getSharedPreferences(prefName, MODE_PRIVATE);
String textMessage = (String) prefs.getString(NAME_KEY, "");
sendSMS("0403579838", textMessage);
// }
}
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//---intent to filter for SMS messages received---
intentFilter = new IntentFilter();
intentFilter.addAction("SMS_RECEIVED_ACTION");
final Button btn1 = (Button)findViewById(R.id.buttonToggle);
excuses = getResources().getStringArray(R.array.excuses_array);
Spinner s1 = (Spinner) findViewById(R.id.spinnerExcuse);
final EditText EditTextNumber = (EditText) findViewById(R.id.editTextNumber);
final EditText EditTextName = (EditText) findViewById(R.id.editTextName);
//---Sorting the spinner view out for excuses selection---
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, excuses);
s1.setAdapter(adapter);
s1.setOnItemSelectedListener(new OnItemSelectedListener()
{
public void onItemSelected(AdapterView<?> arg0, View arg1,
int arg2, long arg3)
{
int index = arg0.getSelectedItemPosition();
excuseSelected = excuses[index];
}
public void onNothingSelected(AdapterView<?> arg0) {}
});
//---Setting the button to toggle between on and off---
btn1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if (btn1.getText().equals("Turn on"))
{
btn1.setText("Turn off");
//---register the receiver---
registerReceiver(intentReceiver, intentFilter);
//---get the SharedPreferences object---
prefs = getSharedPreferences(prefName, MODE_PRIVATE);
SharedPreferences.Editor editor = prefs.edit();
//---set the user inputs to prefo's---
editor.putString(NUMBER_KEY, EditTextNumber.getText().toString());
editor.putString(NAME_KEY, EditTextName.getText().toString());
editor.putString(EXCUSE_KEY, excuseSelected);
}
else
{
btn1.setText("Turn on");
//---unregister the receiver---
unregisterReceiver(intentReceiver);
}
}
});
}
//---sends an SMS message to another device---
public void sendSMS(String phoneNumber, String message)
{
SmsManager sms = SmsManager.getDefault();
sms.sendTextMessage(phoneNumber, null, message, null, null);
displayNotification();
}
protected void displayNotification()
{
Intent i = new Intent(this, NotificationView.class);
i.putExtra("notificationID", notificationID);
PendingIntent pendingIntent =
PendingIntent.getActivity(this, 0, i, 0);
NotificationManager nm = (NotificationManager)
getSystemService(NOTIFICATION_SERVICE);
Notification notif = new Notification(
R.drawable.ic_launcher,
"SMS has been sent by GirlfriendMinder",
System.currentTimeMillis());
CharSequence from = "GirlfriendMinder";
CharSequence message = "SMS has been sent by GirlfriendMinder";
notif.setLatestEventInfo(this, from, message, pendingIntent);
//---100ms delay, vibrate for 250ms, pause for 100ms, and then vibrate for 500ms---
notif.vibrate = new long[] { 100, 250, 100, 500};
nm.notify(notificationID, notif);
}
@Override
protected void onDestroy() {
//---unregister the receiver---
unregisterReceiver(intentReceiver);
super.onPause();
}
}
In your code:
below:
add