App - Alarm - AlarmControl

AlarmControl

AlarmManagerを使って BroadcastReceiverを時間を指定して呼び出します。

Java

//UIを作成
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

    setContentView(R.layout.alarm_controller);

    // Watch for button clicks.
    Button button = (Button)findViewById(R.id.one_shot);
    button.setOnClickListener(mOneShotListener);
    button = (Button)findViewById(R.id.start_repeating);
    button.setOnClickListener(mStartRepeatingListener);
    button = (Button)findViewById(R.id.stop_repeating);
    button.setOnClickListener(mStopRepeatingListener);
}
//１回だけタイマーで実行
//AlarmManagerにset で呼び出します。
    private OnClickListener mOneShotListener = new OnClickListener() {
        public void onClick(View v) {
            // When the alarm goes off, we want to broadcast an Intent to our
            // BroadcastReceiver.  Here we make an Intent with an explicit class
            // name to have our own receiver (which has been published in
            // AndroidManifest.xml) instantiated and called, and then create an
            // IntentSender to have the intent executed as a broadcast.
            Intent intent = new Intent(AlarmController.this, OneShotAlarm.class);
            PendingIntent sender = PendingIntent.getBroadcast(AlarmController.this,
                    0, intent, 0);
        // We want the alarm to go off 30 seconds from now.
        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(System.currentTimeMillis());
        calendar.add(Calendar.SECOND, 30);

        // Schedule the alarm!
        AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
        am.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), sender);

        // Tell the user about what we did.
        if (mToast != null) {
            mToast.cancel();
        }
        mToast = Toast.makeText(AlarmController.this, R.string.one_shot_scheduled,
                Toast.LENGTH_LONG);
        mToast.show();
    }
};
//繰り返しで実行するようにAlarmManagerに設定します。
    private OnClickListener mStartRepeatingListener = new OnClickListener() {
        public void onClick(View v) {
            // When the alarm goes off, we want to broadcast an Intent to our
            // BroadcastReceiver.  Here we make an Intent with an explicit class
            // name to have our own receiver (which has been published in
            // AndroidManifest.xml) instantiated and called, and then create an
            // IntentSender to have the intent executed as a broadcast.
            // Note that unlike above, this IntentSender is configured to
            // allow itself to be sent multiple times.
            Intent intent = new Intent(AlarmController.this, RepeatingAlarm.class);
            PendingIntent sender = PendingIntent.getBroadcast(AlarmController.this,
                    0, intent, 0);
        // We want the alarm to go off 30 seconds from now.
        long firstTime = SystemClock.elapsedRealtime();
        firstTime += 15*1000;

        // Schedule the alarm!
        AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
        am.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
                        firstTime, 15*1000, sender);

        // Tell the user about what we did.
        if (mToast != null) {
            mToast.cancel();
        }
        mToast = Toast.makeText(AlarmController.this, R.string.repeating_scheduled,
                Toast.LENGTH_LONG);
        mToast.show();
    }
};
//AlarmManagerでキャンセルするよう指定します。
    private OnClickListener mStopRepeatingListener = new OnClickListener() {
        public void onClick(View v) {
            // Create the same intent, and thus a matching IntentSender, for
            // the one that was scheduled.
            Intent intent = new Intent(AlarmController.this, RepeatingAlarm.class);
            PendingIntent sender = PendingIntent.getBroadcast(AlarmController.this,
                    0, intent, 0);
        // And cancel the alarm.
        AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
        am.cancel(sender);

        // Tell the user about what we did.
        if (mToast != null) {
            mToast.cancel();
        }
        mToast = Toast.makeText(AlarmController.this, R.string.repeating_unscheduled,
                Toast.LENGTH_LONG);
        mToast.show();
    }
};
//OneShotAlarmは単純にメッセージを表示します。
public class OneShotAlarm extends BroadcastReceiver
{
    @Override
    public void onReceive(Context context, Intent intent)
    {
        Toast.makeText(context, R.string.one_shot_received, Toast.LENGTH_SHORT).show();
    }
}
//RepeatingAlarmも同じく
public class RepeatingAlarm extends BroadcastReceiver
{
    @Override
    public void onReceive(Context context, Intent intent)
    {
        Toast.makeText(context, R.string.repeating_received, Toast.LENGTH_SHORT).show();
    }
}

その他

manifest.xmlにReceiver指定は必須

<receiver android:name=".app.OneShotAlarm" android:process=":remote" />
<receiver android:name=".app.RepeatingAlarm" android:process=":remote" />

Layout

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:padding="4dip"
    android:gravity="center_horizontal"
    android:layout_width="fill_parent" android:layout_height="fill_parent">

    <TextView
        android:layout_width="fill_parent" android:layout_height="wrap_content"
        android:layout_weight="0"
        android:paddingBottom="4dip"
        android:text="@string/alarm_controller"/>

    <Button android:id="@+id/one_shot"
        android:layout_width="wrap_content" android:layout_height="wrap_content" 
        android:text="@string/one_shot_alarm">
        <requestFocus />
    </Button>

    <Button android:id="@+id/start_repeating"
        android:layout_width="wrap_content" android:layout_height="wrap_content" 
        android:text="@string/start_repeating_alarm" />

    <Button android:id="@+id/stop_repeating"
        android:layout_width="wrap_content" android:layout_height="wrap_content" 
        android:text="@string/stop_repeating_alarm" />

</LinearLayout>

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関連サイト

www.akjava.com | github.com/akjava
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