二个android模拟器互发短信程序演示

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="hello">请输入手机号码：</string>
    <string name="app_name">发送短信</string>
    <string name="content">请输入信息内容：</string>
    <string name="send">发送</string>
</resources>

<?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">
    <!-- 请输入手机号码标签 -->
    <TextView android:layout_width="fill_parent"
    android:layout_height="wrap_content" android:text="@string/hello" />

    <!-- 手机号码编辑框 -->
    <EditText android:layout_width="fill_parent"
    android:layout_height="wrap_content" android:id="@+id/mobile" />

    <!-- 请输入信息内容标签 -->
    <TextView android:layout_width="fill_parent"
    android:layout_height="wrap_content" android:text="@string/content" />

    <!-- 信息内容编辑框 -->
    <EditText android:layout_width="fill_parent"
    android:layout_height="wrap_content" android:minLines="3"
    android:id="@+id/message" />

    <!-- 发送按钮 -->
    <Button android:layout_width="wrap_content"
    android:layout_height="wrap_content" android:text="@string/send"
    android:id="@+id/send"/>
</LinearLayout>

package com.sms.activity;

import java.util.List;

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

public class SendMessage extends Activity {

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        // 根据ID获取按钮
        Button button = (Button) this.findViewById(R.id.send);
        // 注册按钮被单击事件
        button.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {

                // 根据ID获取手机号码编辑框
                EditText mobileText = (EditText) findViewById(R.id.mobile);

                // 获取手机号码
                String mobile = mobileText.getText().toString();

                // 根据ID获取信息内容编辑框
                EditText messageText = (EditText) findViewById(R.id.message);

                // 获取信息内容
                String message = messageText.getText().toString();

                // 移动运营商允许每次发送的字节数据有限，我们可以使用Android给我们提供 的短信工具。
                if (message != null) {
                SmsManager sms = SmsManager.getDefault();

                // 如果短信没有超过限制长度，则返回一个长度的List。
                List<String> texts = sms.divideMessage(message);

                for (String text : texts) {
                sms.sendTextMessage(mobile, null, text, null, null);
                Log.i("sms", "send a message");
                }
                }
            }
        });
    }
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.changcheng.activity" android:versionCode="1"
android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".SendMessage" android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
<uses-sdk android:minSdkVersion="8" />

<!-- 注册发送短信的权限,必须加，否则没有权限发短信 -->
<uses-permission android:name="android.permission.SEND_SMS" />

</manifest>