TelephonyUtils

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

import java.util.ArrayList;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.telephony.SmsManager;

public class TelephonyUtils {
   /**
    * 直接拨打电话
    */
   public static void callPhone(Context context, String phoneNum) {
      if (phoneNum != null && phoneNum.trim().length() > 0) {
         Intent intent = new Intent(Intent.ACTION_CALL);
         Uri uri = Uri.parse("tel:" + phoneNum);
         intent.setData(uri);
         context.startActivity(intent);
      }
   }

   /**
    * 跳转到拨号界面
    */
   public static void CallSysDial(Context context, String phoneNum) {
      Intent intent = new Intent(Intent.ACTION_DIAL);
      Uri uri = Uri.parse("tel:" + phoneNum);
      intent.setData(uri);
      context.startActivity(intent);
   }

   /**
    * 跳转到系统的短信编辑界面
    */
   public static void sendMessage(Context context, String phoneNum, String content) {
      Intent intent = new Intent(Intent.ACTION_SENDTO);
      Uri uri = Uri.parse("smsto:" + phoneNum);
      intent.setData(uri);
      intent.putExtra("sms_body", content);
      context.startActivity(intent);
   }

   /**
    * 直接发送短信，无界面
    */
   public static void sendHideMessage(Context context, String phoneNum, String content) {
      if (phoneNum != null && phoneNum.trim().length() > 0) {
         SmsManager manager = SmsManager.getDefault();
         // 消息内容大于70就对消息进行拆分
         if (content.length() > 70) {
            ArrayList<String> arrayList = manager.divideMessage(content);
            for (String message : arrayList) {
               manager.sendTextMessage(phoneNum, null, message, null, null);
            }
         } else {
            manager.sendTextMessage(phoneNum, null, content, null, null);
         }
      }
   }

}