<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/container"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.example.msgSend.MainActivity"    tools:ignore="MergeRootFrame" >    <TextView        android:id="@+id/tv_pleaseInputPhoneNum"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/pleaseInputPhoneNum" />    <EditText        android:id="@+id/et_phoneNum"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignParentLeft="true"        android:layout_below="@+id/tv_pleaseInputPhoneNum"        android:layout_marginTop="14dp"        android:ems="10"        android:inputType="phone" />    <TextView        android:id="@+id/et_pleaseInputContent"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentLeft="true"        android:layout_below="@+id/et_phoneNum"        android:layout_marginTop="16dp"        android:text="@string/pleaseinputcontent" />    <EditText        android:id="@+id/et_content"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_below="@+id/et_pleaseInputContent"        android:layout_marginTop="26dp"        android:layout_marginRight="10dp"        android:layout_marginLeft="10dp"        android:ems="10"        android:lines="5" >    </EditText>    <Button        android:id="@+id/bt_send"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignLeft="@+id/et_content"        android:layout_below="@+id/et_content"        android:layout_marginTop="26dp"        android:text="@string/send" /></RelativeLayout>

package com.example.msgSend;import java.util.List;import android.os.Bundle;import android.support.v7.app.ActionBarActivity;import android.telephony.SmsManager;import android.text.TextUtils;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;public class MainActivity extends ActionBarActivity implements OnClickListener{		/** 电话号码 */	private EditText etPhoneNum;		/** 短信内容 */	private EditText etContent;	/** 发送按钮 */	private Button btSend;		@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.activity_main);				//获得组件		etPhoneNum = (EditText)findViewById(R.id.et_phoneNum);		etContent = (EditText)findViewById(R.id.et_content);		btSend = (Button)findViewById(R.id.bt_send);		System.out.println("获取成功");				//注册点击事件		btSend.setOnClickListener(this);	}	@Override	public void onClick(View v) {		switch (v.getId()) {		case R.id.bt_send:			sendMessage();			break;		default:			break;		}			}	//实现短信发送	private void sendMessage() {		String phoneNum = etPhoneNum.getText().toString();		String content = etContent.getText().toString();				//吐司提示		if (TextUtils.isEmpty(phoneNum) || TextUtils.isEmpty(content)) {			Toast.makeText(this, "手机号码和短信都不能为空", Toast.LENGTH_LONG).show();			return ;		}				SmsManager smsManager = SmsManager.getDefault();		//短信是有长度限制的， 直接对内容进行分割		List<String> contents = smsManager.divideMessage(content);		//发送		for (String content1 : contents) {			smsManager.sendTextMessage(phoneNum, null, content1, null, null);		}	}}