<?xml version=”1.0″ encoding=”utf-8″?>
<resources>
<string name=”app_name”>SendMesage</string>
<string name=”action_settings”>Settings</string>
<string name=”hello_world”>Hello world!</string>
<string name=”hello”>請輸入手機號碼</string>
<string name=”content”>Please input your message</string>
<string name=”send”>Send</string>
</resources>

<LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android”
xmlns:tools=”http://schemas.android.com/tools”
android:orientation=”vertical”
android:layout_width=”fill_parent”
android:layout_height=”fill_parent”
android:paddingBottom=”@dimen/activity_vertical_margin”
android:paddingLeft=”@dimen/activity_horizontal_margin”
android:paddingRight=”@dimen/activity_horizontal_margin”
android:paddingTop=”@dimen/activity_vertical_margin”
tools:context=”.SendMessage” >
<TextView
android:layout_width=”fill_parent”
android:layout_height=”wrap_content”
android:text=”@string/hello”/>
<EditText
android:layout_width=”fill_parent”
android:layout_height=”wrap_content”
android:id=”@+id/mobile”/>
<TextView
android:layout_width=”fill_parent”
android:layout_height=”wrap_content”
android:text=”@string/content”/>
<EditText
android:layout_width=”fill_parent”
android:layout_height=”wrap_content”
android:minLines=”3″
android:id=”@+id/message”/>
<Button
android:layout_width=”wrap_content”
android:layout_height=”wrap_content”
android:text=”@string/send”
android:id=”@+id/send”/>
</LinearLayout>

import java.util.List;

import android.app.Activity;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class SendMessage extends Activity {

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_send_message);

    Button button = (Button)this.findViewById(R.id.send);
    button.setOnClickListener(new OnClickListener() {  // 注冊按鈕單擊事件

            @Override
            public void onClick(View arg0) {
                EditText mobileText = (EditText)findViewById(R.id.mobile);//獲取電話號碼
                String mobile = mobileText.getText().toString();

                EditText messageText = (EditText)findViewById(R.id.message);//獲取短信內(nèi)容
                String message = messageText.getText().toString();

               // 移動運營商允許每次發(fā)送的字節(jié)數(shù)據(jù)有限，可以使用Android提供的短信工具。
                if(message != null) { 
                    SmsManager sms = SmsManager.getDefault();

                    List texts = sms.divideMessage(message);

                    for(String text : texts) {
                        sms.sendTextMessage(mobile, null, text, null, null);
                    }
                }
            }

    });
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.send_message, menu);
    return true;
  }

}

<!– 注冊發(fā)送短信的權(quán)限 –>
<uses-permission android:name=”android.permission.SEND_SMS” />