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"/>