Android 發送短信

一、發送短信的方法

• 使用 Intent 隱式呼叫系統短信應用進行發送

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 發送

  //獲取SmsManager
        SmsManager sms=SmsManager.getDefault();
        //如果內容大于70字，則拆分為多條
        List<String> texts=sms.divideMessage(“需要發送的短信內容！”);

        //逐條發送短信
        for(String text:texts) {
            sms.sendTextMessage(10086, null, text, null, null);
        }

二、發送短信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">

    <EditText
        android:id="@+id/ed_phone"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="number"
        android:maxLength="11"
        android:hint="請輸入手機號碼"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <EditText
        android:id="@+id/ed_content"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:hint="請輸入需要發送的短信內容"
        android:inputType="textPersonName"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/ed_phone" />

    <Button
        android:id="@+id/button"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:text="發送短信"
        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 代碼如下

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;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        edContent=findViewById(R.id.ed_content);
        edPhone=findViewById(R.id.ed_phone);
    }

    //點擊了發送短信按鈕
    public void onClickSendSMSButton(View view) {
        requestPermission();
    }

    //請求權限
    private void requestPermission() {

        //判斷Android版本是否大于23
        if (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();
        }
    }

    //權限請求回呼結果
    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        switch (requestCode) {
            case SEND_SMS:
                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    sendSMS();
                } else {
                    Toast.makeText(this, "請求權限被拒絕！", Toast.LENGTH_SHORT).show();
                }
                break;
            default:
                super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        }
    }

    //發送短信
    private void sendSMS()
    {
        String content=edContent.getText().toString().trim();
        String phone=edPhone.getText().toString().trim();

        if (content.isEmpty()||phone.isEmpty()) {
            Toast.makeText(this, "電話號碼或短信內容不能為空！", Toast.LENGTH_LONG).show();
            return;
        }

        //獲取SmsManager
        SmsManager sms=SmsManager.getDefault();
        //如果內容大于70字，則拆分為多條
        List<String> texts=sms.divideMessage(content);

        //逐條發送短信
        for(String text:texts) {
            sms.sendTextMessage(phone, null, text, null, null);
        }

        Toast.makeText(this,"發送短信成功！",Toast.LENGTH_LONG).show();
    }

}

3.需要在 AndroidManifesh.xml 中添加發送短信權限

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