TimeView.java

/*
 * Copyright (C) 2014 AChep@xda <artemchep@gmail.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301, USA.
 */
package com.achep.acdisplay.ui.widgets;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.text.format.Time;
import android.util.AttributeSet;

import com.achep.base.ui.widgets.TextView;
import com.achep.base.utils.DateUtils;

/**
 * Created by Artem on 29.01.14.
 */
public class TimeView extends TextView {

    private static final String TAG = "TimeView";

    private int mLastTime = -1;

    private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            switch (intent.getAction()) {
                case Intent.ACTION_TIME_TICK:
                case Intent.ACTION_TIME_CHANGED:
                case Intent.ACTION_TIMEZONE_CHANGED:
                    updateClock();
                    break;
            }
        }
    };

    public TimeView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();

        IntentFilter filter = new IntentFilter();
        filter.addAction(Intent.ACTION_TIME_TICK);
        filter.addAction(Intent.ACTION_TIME_CHANGED);
        filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);
        getContext().registerReceiver(mIntentReceiver, filter, null, null);

        updateClock();
    }

    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
        getContext().unregisterReceiver(mIntentReceiver);
    }

    protected void updateClock() {
        Time time = new Time();
        time.setToNow();

        int now = time.hour * 60 + time.minute;
        if (now != mLastTime) {
            setText(DateUtils.formatTime(getContext(), time.hour, time.minute));
            mLastTime = now;
        }
    }
}