Send SMS using Intent.ACTION_SENDTO

In last exercise, how to "Send SMS using android.telephony.SmsManager" is shown. Alternatively, we can startActivity with Intent.ACTION_SENDTO; the default SMS app will be called out to handle the job. In this method, it's no need to grant permission of "android.permission.SEND_SMS".



Modify main.xml from last exercise "Send SMS using android.telephony.SmsManager" to add a button to startActivity with Intent.ACTION_SENDTO.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:orientation="vertical"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   >
<TextView 
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="@string/hello"
   />
<TextView 
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="Enter Phone Number:"
   />
<EditText 
   android:id="@+id/smsnumber"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:inputType="phone"
   />
<TextView 
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="Enter Phone SMS Text:"
   />
<EditText 
   android:id="@+id/smstext"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   />
<Button 
   android:id="@+id/sendsms"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text=" Send SMS "
   />
<Button 
   android:id="@+id/sendsms_intent"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text=" Send SMS using Intent.ACTION_SENDTO "
   />
</LinearLayout>

Modify the code, AndroidSMS.java.

package com.exercise.AndroidSMS;

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

public class AndroidSMS extends Activity {
   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
      
       final EditText edittextSmsNumber = (EditText)findViewById(R.id.smsnumber);
       final EditText edittextSmsText = (EditText)findViewById(R.id.smstext);
       Button buttonSendSms = (Button)findViewById(R.id.sendsms);
       Button buttonSendSms_intent = (Button)findViewById(R.id.sendsms_intent);
      
       buttonSendSms.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
    // TODO Auto-generated method stub
    SmsManager smsManager = SmsManager.getDefault();
    String smsNumber = edittextSmsNumber.getText().toString();
    String smsText = edittextSmsText.getText().toString();
    smsManager.sendTextMessage(smsNumber, null, smsText, null, null);
   }});
      
       buttonSendSms_intent.setOnClickListener(new Button.OnClickListener(){

   @Override
   public void onClick(View arg0) {
    // TODO Auto-generated method stub

    String smsNumber = edittextSmsNumber.getText().toString();
    String smsText = edittextSmsText.getText().toString();
    
    Uri uri = Uri.parse("smsto:" + smsNumber);
    Intent intent = new Intent(Intent.ACTION_SENDTO, uri);
    intent.putExtra("sms_body", smsText);  
    startActivity(intent);
   }});
   }
}

Download the files.