[Android]브로드캐스트 수신자

▶ 브로드캐스트 수신자

Braadcasting 이란 메시지를 여러 객체에게 전달하는 방법을 의미 합니다. 결국, 이러한 이벤트는 단말 전체에 적용될 수 있는 것으로 '글로벌 이벤트(Global Event)'라 합니다. 이렇게 전달되는 브로드캐스팅 메시지는 브로드 캐스트 수신자(Broadcast Receiver)라는 애플리케이션 구성요소를 이용해 받을 수 잇습니다.

브로드캐스트 메시지는 크게 두 가지 종류가 있습니다. 하나는 '순차 브로드캐스트(Ordered Broadcast)' 이고 다른 하나는 '일반 브로드캐스트' 메시지 입니다. 두 브로드캐스트 메시지의 차이점은 일반 브로드캐스트 메시지의 경우 순서 없이 모든 브로드캐스트 수신자에게 메시지를 전달하지만 순차 브로드캐스트는 순서대로  전달하는 것입니다.

▶ SMSBroadcastReceiver.java

import java.util.Date;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.os.Bundle;

import android.telephony.SmsMessage;

import android.util.Log;

public class SMSBroadcastReceiver extends BroadcastReceiver {

public static final String TAG = "SMSBroadcastReceiver";

@Override

public void onReceive(Context context, Intent intent) {

// TODO Auto-generated method stub

Log.i(TAG, "onReceive() called.");

// check if SMS global event is received

        if (intent.getAction().equals("android.provider.Telephony.SMS_RECEIVED")) {

            Log.i(TAG, "SMS received.");

            // abort this one

            abortBroadcast();

            // parse SMS message

            Bundle bundle = intent.getExtras();

    Object messages[] = (Object[])bundle.get("pdus");

    SmsMessage smsMessage[] = new SmsMessage[messages.length];

    int smsPieces = messages.length;

    for(int n=0;n<smsPieces; n++)

    {

    smsMessage[n] = SmsMessage.createFromPdu((byte[])messages[n]);

    }

    Date curDate = new Date(smsMessage[0].getTimestampMillis());

    Log.i(TAG, "SMS Timestamp : " + curDate.toString());

    String origNumber = smsMessage[0].getOriginatingAddress();

    String message = smsMessage[0].getMessageBody().toString();

    Log.i(TAG, "SMS : " + origNumber + ", " + message);

            // launch another activity

            Intent myIntent = new Intent(context, SMSDisplayActivity.class);

            myIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

            myIntent.putExtra("number", origNumber);

            myIntent.putExtra("message", message);

            myIntent.putExtra("timestamp", curDate.toString());

            context.startActivity(myIntent);

        }

}

}

▶ SMSDisplayActivity.java

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.Display;

import android.view.View;

import android.view.View.OnClickListener;

import android.view.Window;

import android.widget.Button;

import android.widget.LinearLayout;

import android.widget.ScrollView;

import android.widget.TextView;

public class SMSDisplayActivity extends Activity {

Button titleButton;

Button closeButton;

TextView messageTextView;

/** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        requestWindowFeature(Window.FEATURE_NO_TITLE);

        setContentView(R.layout.sms_display);

        // refer instances

        titleButton = (Button) findViewById(R.id.titleButton);

        ScrollView scroll01 = (ScrollView) findViewById(R.id.scroll01);

        closeButton = (Button) findViewById(R.id.closeButton);

        messageTextView = (TextView) findViewById(R.id.messageTextView);

        closeButton.setOnClickListener(new OnClickListener() {

        public void onClick(View v) {

        finish();

        }

        });

    int spec = View.MeasureSpec.UNSPECIFIED;

    titleButton.measure(spec, spec);

int button01Height = titleButton.getMeasuredHeight();

closeButton.measure(spec, spec);

    int button02Height = closeButton.getMeasuredHeight();

    Display display = getWindowManager().getDefaultDisplay();

    int screenWidth = display.getWidth();

    int screenHeight = display.getHeight();

    //DisplayMetrics metrics = getResources().getDisplayMetrics();

    //Log.d("SIZE TAG", "widthPixels : " + metrics.widthPixels + ", heightPixels : " + metrics.heightPixels);

    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(

    LinearLayout.LayoutParams.FILL_PARENT,

    LinearLayout.LayoutParams.WRAP_CONTENT);

    params.height = screenHeight - button01Height - button02Height - 20;

    scroll01.setLayoutParams(params);

    // process intent

    Intent passedIntent = getIntent();

    if (passedIntent != null) {

    processIntent(passedIntent);

    }

    }

protected void onNewIntent(Intent intent) {

processIntent(intent);

super.onNewIntent(intent);

}

    private void processIntent(Intent intent) {

    String number = intent.getStringExtra("number");

    String message = intent.getStringExtra("message");

    String timestamp = intent.getStringExtra("timestamp");

    if (number != null) {

    titleButton.setText(number + " 에서 문자 수신");

    messageTextView.setText("[" + timestamp + "] " + message);

    messageTextView.invalidate();

    }

    }

}

▶ sms_display.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="vertical"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    >

<Button

android:id="@+id/titleButton"

   android:layout_width="fill_parent"

   android:layout_height="wrap_content"

   android:text="SMS TITLE"

   />

<ScrollView

android:id="@+id/scroll01"

   android:layout_width="fill_parent"

   android:layout_height="fill_parent"

   android:background="#ff222288"

   >

   <TextView

   android:id="@+id/messageTextView"

   android:layout_width="fill_parent"

   android:layout_height="wrap_content"

   android:text="SMS CONTENTS"

   />

</ScrollView>

<Button

android:id="@+id/closeButton"

   android:layout_width="fill_parent"

   android:layout_height="wrap_content"

   android:text="Close"

   />

</LinearLayout>

▶ AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.example.samplebroadcastreceiver"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="15" />

    

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

 

<application

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name"

        android:theme="@style/AppTheme" >

<!--         

        <activity

            android:name=".SMSReceiverActivity"

            android:label="@string/title_activity_smsreceiver" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

 -->

        <activity android:name=".SMSDisplayActivity"

                  android:label="@string/app_name">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

        <receiver android:name=".SMSBroadcastReceiver">

<intent-filter android:priority="10001">

   <action android:name="android.provider.Telephony.SMS_RECEIVED"/>

</intent-filter>

   </receiver>

   

    </application>

</manifest>