package com.example.sms;

 import java.util.ArrayList;

 import android.support.v7.app.ActionBarActivity;

 import android.support.v7.app.ActionBar;

 import android.support.v4.app.Fragment;

 import android.telephony.SmsManager;

 import android.os.Bundle;

 import android.view.LayoutInflater;

 import android.view.Menu;

 import android.view.MenuItem;

 import android.view.View;

 import android.view.ViewGroup;

 import android.widget.EditText;

 import android.widget.Toast;

 import android.os.Build;

 public class MainActivity extends ActionBarActivity {

     static EditText mETNumber;

     static EditText mETContent;

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.activity_main);

         if (savedInstanceState == null) {

             getSupportFragmentManager().beginTransaction()

                     .add(R.id.container, new PlaceholderFragment()).commit();

         }

     }

     @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;

     }

     @Override

     public boolean onOptionsItemSelected(MenuItem item) {

         // Handle action bar item clicks here. The action bar will

         // automatically handle clicks on the Home/Up button, so long

         // as you specify a parent activity in AndroidManifest.xml.

         int id = item.getItemId();

         if (id == R.id.action_settings) {

             return true;

         }

         return super.onOptionsItemSelected(item);

     }

     /**

      * A placeholder fragment containing a simple view.

      */

     public static class PlaceholderFragment extends Fragment {

         public PlaceholderFragment() {

         }

         @Override

         public View onCreateView(LayoutInflater inflater, ViewGroup container,

                 Bundle savedInstanceState) {

             View rootView = inflater.inflate(R.layout.fragment_main, container,

                     false);

             //由于在fragment_main里面定义了，因此需要在这里定义

             mETNumber =(EditText) rootView.findViewById(R.id.et_number);

             mETContent = (EditText) rootView.findViewById(R.id.et_content);

             return rootView;

         }

     }

     public void send(View v){

     String number = mETNumber.getText().toString().trim();

     String content = mETContent.getText().toString().trim();

     if("".equals(number)||"".equals(content)){

         Toast.makeText(this, R.string.error_message, Toast.LENGTH_LONG).show();//添加show才可以显示出来

     }else{

         //这是发送一条常规短信的写法

         //SmsManager.getDefault().sendTextMessage(number, null, content, null, null); //需要授权，请注意添加

         //Toast.makeText(this,R.string.success_message, Toast.LENGTH_LONG).show();

         SmsManager smsmanager = SmsManager.getDefault();

         ArrayList<String> messages = smsmanager.divideMessage(content);//ArrayList是个集合，里面的类型是String类型的，这是根据dividemessage的补充说明添加的

         for(String message:messages){

             smsmanager.sendTextMessage(number, null, message, null, null);

         }

     }

 }}