一、发送短信的方法

• 使用 Intent 隐式调用系统短信应用进行发送

Uri uri = Uri.parse("smsto:10086");Intent it = new Intent(Intent.ACTION_SENDTO, uri);it.putExtra("sms_body", "Hello World！");startActivity(it);        

• 使用 SmsManager 发送

  //获取SmsManagerSmsManager sms=SmsManager.getDefault();//如果内容大于70字，则拆分为多条List<String> texts=sms.divideMessage(“需要发送的短信内容！”);//逐条发送短信for(String text:texts) {sms.sendTextMessage(10086, null, text, null, null);}

 

二、发送短信Demo

1.界面布局

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".MainActivity"><EditTextandroid:id="@+id/ed_phone"android:layout_width="0dp"android:layout_height="wrap_content"android:ems="10"android:inputType="number"android:maxLength="11"android:hint="请输入手机号码"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toTopOf="parent" /><EditTextandroid:id="@+id/ed_content"android:layout_width="0dp"android:layout_height="wrap_content"android:hint="请输入需要发送的短信内容"android:inputType="textPersonName"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toBottomOf="@+id/ed_phone" /><Buttonandroid:id="@+id/button"android:layout_width="0dp"android:layout_height="wrap_content"android:text="发送短信"android:onClick="onClickSendSMSButton"android:textSize="18sp"app:layout_constraintEnd_toEndOf="parent"app:layout_constraintStart_toStartOf="parent"app:layout_constraintTop_toBottomOf="@+id/ed_content" />
</androidx.constraintlayout.widget.ConstraintLayout>

 

2.MainActivity 代码如下

package com.daliang.demo_sms;import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Toast;import java.util.List;public class MainActivity extends AppCompatActivity {private static final int SEND_SMS = 100;private EditText edContent;private EditText edPhone;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);edContent=findViewById(R.id.ed_content);edPhone=findViewById(R.id.ed_phone);}//点击了发送短信按钮public void onClickSendSMSButton(View view) {requestPermission();}//请求权限private void requestPermission() {//判断Android版本是否大于23if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {int checkCallPhonePermission = ContextCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE);if (checkCallPhonePermission != PackageManager.PERMISSION_GRANTED) {ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.SEND_SMS}, SEND_SMS);return;} else {sendSMS();}} else {sendSMS();}}//权限请求回调结果@Overridepublic void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {switch (requestCode) {case SEND_SMS:if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {sendSMS();} else {Toast.makeText(this, "请求权限被拒绝！", Toast.LENGTH_SHORT).show();}break;default:super.onRequestPermissionsResult(requestCode, permissions, grantResults);}}//发送短信private void sendSMS(){String content=edContent.getText().toString().trim();String phone=edPhone.getText().toString().trim();if (content.isEmpty()||phone.isEmpty()) {Toast.makeText(this, "电话号码或短信内容不能为空！", Toast.LENGTH_LONG).show();return;}//获取SmsManagerSmsManager sms=SmsManager.getDefault();//如果内容大于70字，则拆分为多条List<String> texts=sms.divideMessage(content);//逐条发送短信for(String text:texts) {sms.sendTextMessage(phone, null, text, null, null);}Toast.makeText(this,"发送短信成功！",Toast.LENGTH_LONG).show();}}

3.需要在 AndroidManifesh.xml 中添加发送短信权限

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