package cn.szy.com;

import java.util.ArrayList;

import android.app.Activity;

import android.os.Bundle;

import android.telephony.SmsManager;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.Toast;

public class MainActivity extends Activity {

    /** Called when the activity is first created. */

	private Button button;

	private EditText edittext,number;

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        button =  (Button)this.findViewById(R.id.button);

        number = (EditText)this.findViewById(R.id.num);

        edittext = (EditText)this.findViewById(R.id.content);

    }

public void Opentall(View v){

	String num = number.getText().toString();

	String content = edittext.getText().toString();

	SmsManager manager = SmsManager.getDefault();

	ArrayList<String> texts = manager.divideMessage(content);

	for(String text : texts){

		manager.sendTextMessage(num, null, text, null, null);

	}

	Toast.makeText(MainActivity.this, "发送成功", Toast.LENGTH_LONG).show();

}

}

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