Send sms from Android application

This tutorial demonstrate how we can implement a simple Android application which can send SMS. To check this application I used two emulators. If you are planning to  use emulator to check this you need to create two emulators first. I have tested this using Android 2.2 two emulators.


1. First create two emulators
    One should be emulator-5554 and the other one should be emulator-5556

2. Here is the Activity code for send SMS using intent.

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
public class TestSMSActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        String number = "5556";
        startActivity(new Intent(Intent.ACTION_VIEW, Uri.fromParts("sms", number, null)));
    }
}

The variable "number" in line 11 is the the recipient of the SMS activity. I'm going test this application using two emulators therefore I used one emulator number for that variable. If you are going to send SMS to mobile phone replace number with mobile phone number, but remember that sending SMS from emulator to a cell phone is difficult.

Don't forget to add send SMS permission to your Manifest file.

3. Run the project.
Android device chooser window will appear. Choose an AVD. If you assigned 5556 to number variable then choose emulator-5554 to run program, other vice select emulator-5554.

Then compose message window will open. Type a simple text (Eg:-"Hello world!") there and click on send.

emulator-5554

You can see received SMS on the other emulator

emulator-5556

Data sharing between two Android applications

In this tutorial I'm going to illustrate how we can share data between two Android applications using Shared Preference.
To implement this I used two Android applications. One is "Datawriter" and the other one is "Datareader".
"Datawriter" is to update shared data. Its' package name is com.writer.data class name is DataWriterActivity . Here is the code for DataWriterActivity class.

package com.writer.data;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;

public class DataWriterActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        dataWriter();
    }
    
    public void dataWriter(){
        String strShareValue = "Hello! this is shared data";
        SharedPreferences prefs = getSharedPreferences("demopref",Context.MODE_WORLD_READABLE);
        SharedPreferences.Editor editor = prefs.edit();
        editor.putString("demostring", strShareValue);
        editor.commit();
    }
}

dataWriter method will write the string Hello! this is shared data to a shared memory.

Next application is to read shared data. The application name is  Datareader and its' package name is com.datareader class name is DataReaderActivity. Here is the code for DataReaderActivity class.

package com.datareader;

import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

public class DataReaderActivity extends Activity {
 String dataShared;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
         dataRead();
         TextView tv = (TextView)findViewById(R.id.textView1);
         tv.setText(dataShared);
        
    }
    
    public void dataRead(){
      Context con;
         try {
             con = createPackageContext("com.writer.data", 0);
             SharedPreferences pref = con.getSharedPreferences("demopref", Context.MODE_PRIVATE);
             dataShared = pref.getString("demostring", "No Value");
         }
         catch (NameNotFoundException e) {
             Log.e("Not data shared", e.toString());
         }
    }
}

"com.writer.data" in the highlighted line is the package name of the first application which we used to share data.
Following is the out put of second application :