短信发送器

先欣赏下界面：

页面布局xml文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    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=".MainActivity" >
    <!-- 相对布局 ，显示收件人及号码输入框-->
    <RelativeLayout android:id="@+id/relativeLayoutIN"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:paddingTop="@dimen/activity_vertical_margin"
        android:layout_marginBottom="@dimen/activity_vertical_margin"
        >
        <TextView android:id="@+id/shoujianrenText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/shoujianren" 
            />
        <EditText android:id="@+id/shoujianren"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_toRightOf="@id/shoujianrenText"
            android:hint="@null"
        />
    </RelativeLayout>

        <!-- 线性布局，显示信息内容-->
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/neirong" />
    <EditText 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:hint="@string/test"
        android:minLines="3"
        android:id="@+id/neirong"/>

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:text="@string/button" />

</LinearLayout>

编写业务处理代码：

package com.yangzi.sms;

import java.util.ArrayList;

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

@SuppressWarnings("deprecation")
public class MainActivity extends Activity {
    private Button button ;
    private EditText numtext;
    private EditText nrtext;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //找到各个组件
        button = (Button) this.findViewById(R.id.button);
        numtext = (EditText) this.findViewById(R.id.shoujianren);
        nrtext = (EditText) this.findViewById(R.id.neirong);
        //为按钮设置监听对象
        button.setOnClickListener(new ButtonClickListener());
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    private final class ButtonClickListener implements OnClickListener{
        @SuppressLint("ShowToast")
        @Override
        public void onClick(View arg0) {
            String number = numtext.getText().toString();
            String content = nrtext.getText().toString();
            //得到消息管理对象
            SmsManager manager = SmsManager.getDefault();
            //若短信内容太长，需要拆分
            ArrayList<String> texts = manager.divideMessage(content);
            for(String text:texts){
                manager.sendTextMessage(number, null, text, null, null);
            }
            Toast.makeText(getApplicationContext(), R.string.success, Toast.LENGTH_LONG).show();
        }
    }
}

添加权限：

   <uses-permission android:name="android.permission.SEND_SMS"/>