Android Open Source - gps-lock-lock Notification Ui

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From Project

Back to project page gps-lock-lock.

License

The source code is released under:

GNU General Public License

Java Source Code

package com.github.tdudziak.gps_lock_lock;
/*from w  w  w  . j  a va  2 s. c  o m*/
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;

class NotificationUi
{
    private static final String TAG = "NotificationUi";
    private static final int NOTIFICATION_ID = 1;

    private Notification mNotification;
    private NotificationManager mNotificationManager;
    private PendingIntent mIntent;
    private BroadcastReceiver mReceiver;
    private Service mService;
    private boolean mServiceIsForeground = false;
    private boolean mIsEnabled = false;

    public NotificationUi(Service service) {
        mService = service;

        int icon = R.drawable.ic_stat_notification;
        CharSequence ticker = mService.getText(R.string.notification_ticker);
        mNotificationManager = (NotificationManager) mService.getSystemService(Context.NOTIFICATION_SERVICE);
        Intent notificationIntent = new Intent(mService, ControlActivity.class);
        mIntent = PendingIntent.getActivity(mService, 0, notificationIntent, 0);
        long now = System.currentTimeMillis();
        mNotification = new Notification(icon, ticker, now);

        mReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                int remaining = intent.getIntExtra(LockService.EXTRA_TIME_LEFT, -1);
                int last_fix = intent.getIntExtra(LockService.EXTRA_LAST_FIX, -1);
                redraw(remaining, last_fix);
            }
        };

        IntentFilter filter = new IntentFilter(LockService.ACTION_UI_UPDATE);
        LocalBroadcastManager.getInstance(mService).registerReceiver(mReceiver, filter);
    }

    public void enable() {
        IntentFilter filter = new IntentFilter(LockService.ACTION_UI_UPDATE);
        LocalBroadcastManager.getInstance(mService).registerReceiver(mReceiver, filter);
        mIsEnabled = true;
        Log.i(TAG, "enable()");
    }

    public void disable() {
        LocalBroadcastManager.getInstance(mService).unregisterReceiver(mReceiver);
        mServiceIsForeground = false;
        mIsEnabled = false;
        Log.i(TAG, "disable()");
    }

    private void redraw(int remaining, int last_fix) {
        String title, text;

        if(!mIsEnabled) {
            // this sometimes happens when disabled while some messages are still pending
            return;
        }

        if(remaining <= 0) {
            // This *must* be the last message; hide the notification.
            mNotificationManager.cancel(NOTIFICATION_ID);
            return;
        }

        if(last_fix < 0) {
            title = mService.getString(R.string.notification_title_nofix);
        } else if(last_fix > 0) {
            title = String.format(mService.getString(R.string.notification_title), last_fix);
        } else {
            title = mService.getString(R.string.notification_title_1minfix);
        }

        text = String.format(mService.getString(R.string.notification_text), remaining);
        mNotification.setLatestEventInfo(mService, title, text, mIntent);

        if(mServiceIsForeground) {
            mNotificationManager.notify(NOTIFICATION_ID, mNotification);
        } else {
            Log.v(TAG, "First update after enable(); calling startForeground()");
            mService.startForeground(NOTIFICATION_ID, mNotification);
            mServiceIsForeground = true;
        }
    }
}

Java Source Code List

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