Hi Guys!
I have the following problem:
The user, who is using the app. should be able to define when he wants to
send his or her SMS.
Therefore I have a textfield, where the user can define when to send the
next SMS ( in minutes! ).
Now my problem is that I have two buttons: SMS send and Cancel .
When the user presses the SMS send button an SMS should be sent and this
SMS should be sent every x minutes ( the minutes the user has already
defined in the textfield ).
But the Cancel button should cancel this process and here is my problem: As
soon as the user presses SMS send the Ui hangs and the user is not able to
press the cancel button anymore.
I know I can solve the problem with a Thread or maybe with the
"doInBackground" method but I am not sure whether I am on the right track!
Can anyone help me please, I am not sure whether I am right!
Thank you very much!
Here is my code:
package com.example.smsmessageregulary;
import android.app.Activity;
import android.app.PendingIntent;
import android.content.ContentResolver;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.Contacts;
import android.provider.ContactsContract;
import android.telephony.gsm.SmsManager;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class SMSRegulary extends Activity
{
Button btnSendSMS, PhonePicker;
EditText txtPhoneNo;
EditText txtMessage;
EditText txtCounter;
int counter = 0;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_smsregulary);
btnSendSMS = (Button) findViewById(R.id.btnSendSMS);
txtPhoneNo = (EditText) findViewById(R.id.txtPhoneNo);
txtMessage = (EditText) findViewById(R.id.txtMessage);
txtCounter = (EditText) findViewById(R.id.txtCounter);
PhonePicker = (Button) findViewById(R.id.picker);
PhonePicker.setOnClickListener(new View.OnClickListener(){
public void onClick(View v) {
// TODO Auto-generated method stub
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,
null, null, null, null);
if (cur.getCount() > 0) {
while (cur.moveToNext()) {
String id =
cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
String name =
cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
System.out.println(name);
if
(Integer.parseInt(cur.getString(cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER)))
> 0) {
//Query phone here. Covered next
System.out.println("HERE");
}
}
}
}
});
btnSendSMS.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
String phoneNo = txtPhoneNo.getText().toString();
String message = txtMessage.getText().toString();
String Repeater = txtCounter.getText().toString();
Repeater = Repeater + "000";
Integer r = Integer.valueOf(Repeater);
long l = r.longValue();
if (phoneNo.length()>0 && message.length()>0 &&
Repeater.length() == 0)
sendSMS(phoneNo, message);
else {
while ( counter <= 99 ) {
sendSMS(phoneNo, message);
try {
Thread.sleep(l);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
});
}
//---sends an SMS message to another device---
private void sendSMS(String phoneNumber, String message)
{
PendingIntent pi = PendingIntent.getActivity(this, 0,
new Intent(this, SMSRegulary.class), 0);
SmsManager sms = SmsManager.getDefault();
sms.sendTextMessage(phoneNumber, null, message, pi, null);
}
}
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