'프로그래밍/Android' 카테고리의 글 목록 (2 Page)

프로그래밍/Android

알림 예제(Notification Example)

2016. 12. 20. 00:13

알림 예제(Notification Example)

버튼 누르면 toast 메시지가 뜨고 진동과 함께 상태창에 알림이 온다.

상태창의 알림을 터치하면 SubActivity가 호출된다.

activity_main.xml

<?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:id="@+id/activity_main"
    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.notificationexample.mystoryg.notificationexample.MainActivity">

    <Button
        android:id="@+id/notification"
        android:text="notification"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</RelativeLayout>

MainActivity.java

package com.notificationexample.mystoryg.notificationexample;


import android.app.Activity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.support.v4.app.NotificationCompat;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends Activity {

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

        Button noti = (Button) findViewById(R.id.notification);
        noti.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showToast();
                showNotification();
            }
        });
    }

    private void showToast() {
        Toast toast = Toast.makeText(this, "알림을 확인해주세요!", Toast.LENGTH_LONG);
        toast.show();
    }

    private void showNotification() {
        NotificationManager nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, new Intent(this, SubActivity.class)
.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP), PendingIntent.FLAG_UPDATE_CURRENT);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
        builder.setContentTitle("알림").setContentText("터치해주세요.").setTicker("확인해주세요.")
.setSmallIcon(R.drawable.email).setContentIntent(pendingIntent).setAutoCancel(true)
.setWhen(System.currentTimeMillis()).setDefaults(Notification.DEFAULT_ALL);

        nm.notify(1, builder.getNotification());
    }
}

activity_sub.xml

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_sub"
    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"
    android:orientation="vertical"
    tools:context="com.notificationexample.mystoryg.notificationexample.SubActivity">

    <TextView
        android:text="확인하셨습니다."
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/home"
        android:text="처음으로"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

SubActivity.java

package com.notificationexample.mystoryg.notificationexample;


import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class SubActivity extends Activity {

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

        Button home = (Button)findViewById(R.id.home);
        home.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(getApplicationContext(), MainActivity.class);
                intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                startActivity(intent);
            }
        });
    }
}

저작자표시 비영리 변경금지

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Service Example

2016. 12. 17. 17:38

Service Example

background daemon 방식의 서비스 예제이다. 웹 서핑과 음악 감상을 동시에 하는 앱을 만들고자 한다면 백그라운드 서비스를 통해 음악을 재생하면 된다.

하기 예제는 서비스를 실행하면 핸들러에 의해서 1초 단위로 run() 함수가 실행된다. 마지막 run() 호출 후 1초 이내에 서비스를 종료하면 onDestroy()가 호출되어 mIsRunning이 false가 된다. 서비스를 manifest에 추가해주는 것도 잊지말자.

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.serviceexmaple.mystoryg.serviceexample">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

        <service
            android:name=".MyService"
            android:enabled="true"
            android:exported="true"></service>
    </application>

</manifest>

activity_main.xml

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    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.serviceexmaple.mystoryg.serviceexample.MainActivity">

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

        <Button
            android:id="@+id/start_service"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Start Service" />

        <Button
            android:id="@+id/stop_service"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Stop Service" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

        <TextView
            android:id="@+id/view_service"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>
</LinearLayout>

MainActivity.java

package com.serviceexmaple.mystoryg.serviceexample;


import android.app.Activity;
import android.content.ComponentName;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {
    public static final String TAG = MainActivity.class.getSimpleName();

    ComponentName mServiceName;
    TextView mTextView;
//    Intent mIntent;

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

        mTextView = (TextView) findViewById(R.id.view_service);

        Button start = (Button) findViewById(R.id.start_service);
        start.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startSrv();
            }
        });

        Button stop = (Button) findViewById(R.id.stop_service);
        stop.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                stopSrv();
            }
        });
    }


    private void startSrv() {
//        mIntent = new Intent(this, MyService.class);
//        mServiceName = startService(mIntent);
        mServiceName = startService(new Intent(this, MyService.class));
        Log.d(TAG, "mServiceName = " + mServiceName.toString());
        mTextView.append("Service Start.\n");
    }

    private void stopSrv() {
        if (null == mServiceName) {
            mTextView.append("Service is not start.\n");
            return;
        }
        Intent intent = new Intent();
        intent.setComponent(mServiceName);
//        if(stopService(mIntent)) {
        if (stopService(intent)) {
            mTextView.append("Service Stop.\n");
        } else {
            mTextView.append("Service is already stop.\n");
        }
    }
}

MyService.class

package com.serviceexmaple.mystoryg.serviceexample;

import android.app.Service;
import android.content.Intent;
import android.os.Handler;
import android.os.IBinder;
import android.util.Log;

public class MyService extends Service implements Runnable {
    public static final String TAG = MyService.class.getSimpleName();
    private int mStartId;
    private Handler mHandler;
    private boolean mIsRunning;

    public MyService() {
    }

    @Override
    public void onCreate() {
        Log.i(TAG, "onCreate()");
        super.onCreate();

        mIsRunning = false;
        mHandler = new Handler();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.i(TAG, "startId = " + startId);
        mStartId = startId;
        if (!mIsRunning) {
            mHandler.postDelayed(this, 1000);
            mIsRunning = true;
        }
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public void onDestroy() {
        Log.i(TAG, "onDestroy()");
        mIsRunning = false;
        super.onDestroy();
    }

    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        throw new UnsupportedOperationException("Not yet implemented");
    }

    @Override
    public void run() {
        if (!mIsRunning) {
            Log.i(TAG, "It run after call onDestroy()");
        } else {
            Log.i(TAG, "run()");
            mHandler.postDelayed(this, 1000);
        }
    }

}

실행 결과 log

12-17 17:24:34.700 11136-11136/com.serviceexmaple.mystoryg.serviceexample I/ViewRootImpl: ViewRoot's Touch Event : ACTION_DOWN

12-17 17:24:34.789 11136-11136/com.serviceexmaple.mystoryg.serviceexample I/ViewRootImpl: ViewRoot's Touch Event : ACTION_UP

12-17 17:24:34.794 11136-11136/com.serviceexmaple.mystoryg.serviceexample D/MainActivity: mServiceName = ComponentInfo{com.serviceexmaple.mystoryg.serviceexample/com.serviceexmaple.mystoryg.serviceexample.MyService}

12-17 17:24:34.795 11136-11136/com.serviceexmaple.mystoryg.serviceexample I/MyService: onCreate()

12-17 17:24:34.807 11136-11136/com.serviceexmaple.mystoryg.serviceexample I/MyService: startId = 1

12-17 17:24:35.810 11136-11136/com.serviceexmaple.mystoryg.serviceexample I/MyService: run()

12-17 17:24:36.812 11136-11136/com.serviceexmaple.mystoryg.serviceexample I/MyService: run()

12-17 17:24:37.814 11136-11136/com.serviceexmaple.mystoryg.serviceexample I/MyService: run()

12-17 17:24:38.816 11136-11136/com.serviceexmaple.mystoryg.serviceexample I/MyService: run()

12-17 17:24:39.819 11136-11136/com.serviceexmaple.mystoryg.serviceexample I/MyService: run()

12-17 17:24:40.345 11136-11136/com.serviceexmaple.mystoryg.serviceexample I/ViewRootImpl: ViewRoot's Touch Event : ACTION_DOWN

12-17 17:24:40.453 11136-11136/com.serviceexmaple.mystoryg.serviceexample I/ViewRootImpl: ViewRoot's Touch Event : ACTION_UP

12-17 17:24:40.459 11136-11136/com.serviceexmaple.mystoryg.serviceexample I/MyService: onDestroy()

12-17 17:24:40.820 11136-11136/com.serviceexmaple.mystoryg.serviceexample I/MyService: It run after call onDestroy()

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명시적 인텐트(Explicit Intent)

2016. 12. 16. 01:41

명시적 인텐트(Explicit Intent)

실행할 컴포넌트 이름을 명시적으로 정하는 방식이다.

MainActivity(caller)의 intent를 기반으로 framework에 SubActivity(callee)의 실행을 요청하여 해당 액티비티를 실행한다. call 버튼에 의한 것이면 startActivity()로 결과를 받아올 수 없다.

call_result 버튼에 의한 것이면 startActivityForResult()로 결과를 받아올 수 있다. 그에 대한 처리는 onActivityResult()에서 한다.

activity_main.xml

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    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"
    android:orientation="vertical"
    tools:context="com.explicitintent.mystoryg.explicitintent.MainActivity">

    <Button
        android:id="@+id/call"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="call activity" />

    <Button
        android:id="@+id/call_result"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="call activity and get result" />
 
    <TextView
        android:id="@+id/result"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="return data" />
</LinearLayout>

MainActivity.java

package com.explicitintent.mystoryg.explicitintent;


import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity implements View.OnClickListener {

    private static final String TAG = MainActivity.class.getSimpleName();
    public static final String INPUT = "input";
    public static final String RESULT = "result";
    private static final int SUB_ACTIVITY = 1;
    TextView mResult;

    static final int[] BUTTONS = {
            R.id.call,
            R.id.call_result
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mResult = (TextView) findViewById(R.id.result);
        for (int button : BUTTONS) {
            Button btn = (Button) findViewById(button);
            btn.setOnClickListener(this);
        }
    }

    @Override
    public void onClick(View v) {
        int id = v.getId();
        switch (id) {
            case R.id.call:
                call();
                break;
            case R.id.call_result:
                call_result();
                break;
        }
    }

    private void call() {
        Intent intent = new Intent(getApplicationContext(), SubActivity.class);
        intent.putExtra(INPUT, "This is normal call.");
        mResult.setText("return data");
        startActivity(intent);
    }

    private void call_result() {
        Intent intent = new Intent(getApplicationContext(), SubActivity.class);
        intent.putExtra(INPUT, "This is call and get result.");
        mResult.setText("return data");
        startActivityForResult(intent, SUB_ACTIVITY);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == SUB_ACTIVITY) {
            if (resultCode == RESULT_OK) {
                mResult.setText(data.getStringExtra(RESULT));
            } else {
                mResult.setText("Error!");
            }
        }
        super.onActivityResult(requestCode, resultCode, data);
    }
}

activity_sub.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_sub"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    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.explicitintent.mystoryg.explicitintent.SubActivity">

    <EditText
        android:id="@+id/result_message"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/response"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="response" />

</LinearLayout>

SubActivity.java

package com.explicitintent.mystoryg.explicitintent;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class SubActivity extends Activity {

    private static final String TAG = SubActivity.class.getSimpleName();
    EditText mEdit;

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

        String input = getIntent().getStringExtra(MainActivity.INPUT);
        if (null != input) {
            mEdit = (EditText) findViewById(R.id.result_message);
            mEdit.setText(input);
        }

        Button response = (Button) findViewById(R.id.response);
        response.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String response = mEdit.getText().toString();
                if(response.length() != 0) {
                    Intent intent = new Intent();
                    intent.putExtra(MainActivity.RESULT, response);
                    setResult(RESULT_OK, intent);
                } else {
                    setResult(RESULT_CANCELED);
                }

                finish();
            }
        });
    }

}

저작자표시 비영리 변경금지

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알림 예제(Notification Example) (0)	2016.12.20
Service Example (0)	2016.12.17
암시적 인텐트(Implicit Intent) (0)	2016.12.15
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