암시적 인텐트 (implicit intent)

암시적 인텐트 (implicit intent)

암시적 인텐트 (implicit intent)

1. 메인 액티비티 레이아웃

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.progdv.sms_service.MainActivity">

    <LinearLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_margin="20sp">

    <TextView
        android:id="@+id/tv01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="전화번호" />
        
     <EditText
         android:id="@+id/receiver"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:text="010-1234-5678" />

        <TextView
            android:id="@+id/tv02"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="메시지" />

        <EditText
            android:id="@+id/message"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>
        
        <Button
            android:id="@+id/send"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="SMS 보내기"/>

    </LinearLayout>

</RelativeLayout>

2. 메인 액티비티 클래스

package com.progdv.sms_service;

import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {

    EditText receiver, message;
    Button btn;

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

        receiver = (EditText)findViewById(R.id.receiver);
        message = (EditText)findViewById(R.id.message);
        btn = (Button)findViewById(R.id.send);

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Uri num = Uri.parse("smsto:" + receiver.getText());
                Intent intent = new Intent(Intent.ACTION_SENDTO, num);

                String msg = message.getText().toString(); // 입력받은 문자열 반환
                intent.putExtra("sms_body", msg);
                startActivity(intent);
            }
        });
    }
}

3. 권한 부여

AndroidManifest.xml에서 인터넷에 접속할 권한, SMSM를 주고 받는 권한을 다음과 같이 부여해준다.

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

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

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