DTMF Tone Generator

package com.android.ToneGen;

import android.app.Activity;
import android.media.AudioManager;
import android.media.ToneGenerator;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class ToneGen extends Activity {
ToneGenerator tone;
Button btnSend;
EditText editTone;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        tone = new ToneGenerator(AudioManager.STREAM_DTMF, 100);
        btnSend=(Button)findViewById(R.id.btnSend);
        editTone= (EditText)findViewById(R.id.editTone);
       
        btnSend.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
int no=Integer.parseInt(editTone.getText().toString());
tone.startTone(no,2000);



}
});
       
    }
}

Send MMS Example

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import java.io.File;

public class MMS extends Activity {

// Fields
private String TAG = "MMS";

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

// To display current window in full screen.
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);

/**
* See assets/res/layout/mms.xml for this view layout
* definition, which is being set here as the content of our screen.
*/
setContentView(R.layout.mms);

}

/*
* Open Gallery to select image to send on OnClick Event of mmsBtnMMSPic.
*/
public void onClickPicMMS(View view) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"),0);

}


/*
* Called when an activity you launched exits, giving you the requestCode you started it with, the resultCode it returned, and any additional data from it.
*/
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);

if (requestCode == 0 && resultCode == RESULT_OK) {

// Fetch the path of selected image.
Uri uri = data.getData();
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String mmsImagPath = cursor.getString(column_index);

//Call the intent to send selected image as MMS.
Intent intent = new Intent(Intent.ACTION_SEND);
File f = new File(mmsImagPath);
intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(f)); // imageUri set previously
intent.setType("image/jpg");
startActivity(intent);

}
}
}

Dial Number Example

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;




public class DialANumber extends Activity {
  EditText mEditText_number = null;
  LinearLayout mLinearLayout_no_button = null;
  Button mButton_dial = null;
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mLinearLayout_no_button = new LinearLayout(this);
    mEditText_number = new EditText(this);
    mEditText_number.setText("5551222");
    mLinearLayout_no_button.addView(mEditText_number);
    mButton_dial = new Button(this);
    mButton_dial.setText("Dial!");
    mLinearLayout_no_button.addView(mButton_dial);
    mButton_dial.setOnClickListener(new View.OnClickListener() {
      public void onClick(View v) {
        performDial();
      }
    });
    setContentView(mLinearLayout_no_button);
  }
  public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_CALL) {
      performDial();
      return true;
    }
    return false;
  }
  public void performDial(){
    if(mEditText_number!=null){
      try {
        startActivity(new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + mEditText_number.getText())));
      } catch (Exception e) {
        e.printStackTrace();
      }
    }//if
  }
}

Sms Receiver

AndroidManifest.xml

<?xml vers

ion="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="net.learn2develop.SMSMessaging"
      android:versionCode="1"
      android:versionName="1.0.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".SMS"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>        
 
        <receiver android:name=".SmsReceiver"> 
            <intent-filter> 
                <action android:name=
                    "android.provider.Telephony.SMS_RECEIVED" /> 
            </intent-filter> 
        </receiver>
 
    </application>
    <uses-permission android:name="android.permission.SEND_SMS">
    </uses-permission>
    <uses-permission android:name="android.permission.RECEIVE_SMS">
    </uses-permission>
</manifest>

SmsReceiver.java

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.gsm.SmsMessage;
import android.widget.Toast;
 
public class SmsReceiver extends BroadcastReceiver
{
    @Override
    public void onReceive(Context context, Intent intent) 
    {
        //---get the SMS message passed in---
        Bundle bundle = intent.getExtras();        
        SmsMessage[] msgs = null;
        String str = "";            
        if (bundle != null)
        {
            //---retrieve the SMS message received---
            Object[] pdus = (Object[]) bundle.get("pdus");
            msgs = new SmsMessage[pdus.length];            
            for (int i=0; i<msgs.length; i++){
                msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);                
                str += "SMS from " + msgs[i].getOriginatingAddress();                     
                str += " :";
                str += msgs[i].getMessageBody().toString();
                str += "\n";        
            }
            //---display the new SMS message---
            Toast.makeText(context, str, Toast.LENGTH_SHORT).show();
        }                         
    }
}