Question

我的Android应用程序目前有问题。我使用Google客户端消息服务向我的Android应用程序发送消息。如果用户打开应用，则会从HomeActivity开始。

当用户现在从服务器收到我的消息并按下推送消息时，应用程序会使用AlertActivity启动新的意图。

此时，我将putExtra的时间（保存在消息中）传递给新活动，我将其用于CownDownTimer。直到这一刻，一切正常，倒计时工作完美。

现在的问题是，当用户最小化应用程序并再次打开它时。在此点，用户不会再次重定向到我的AlertActivity，而是重定向到我的HomeActivity。

在CountDownTimer结束后播放AlertSound，但他无法取消，因为他无法再次显示该活动。

如果用户在AlertActivity正在运行时启动应用，我如何将用户重定向到CountDown？

我的AlertActivity

package com.prgguru.example;

public class AlertActivity extends Activity {

    String str;
    Boolean running;

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

        final TextView txttime = (TextView) findViewById(R.id.txtalert);
        str = getIntent().getStringExtra("msg");
        Integer time = Integer.parseInt(str);

        time = time; //*60000;

        txttime.setText(time+"");

        CountDownTimer Count = new CountDownTimer(time, 1000) {
            @Override
            public void onTick(long millisUntilFinished) {
                running = true;
                txttime.setText(String.format("%02d:%02d:%02d",
                        TimeUnit.MILLISECONDS.toHours(millisUntilFinished),
                        TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished) -
                                TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millisUntilFinished)),
                        TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished) -
                                TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished))));
                //txttime.setText(""+millisUntilFinished / 1000);
            }

            @Override
            public void onFinish() {
                txttime.setText("Finished");

                final MediaPlayer mp = MediaPlayer.create(getApplicationContext(), R.raw.alarm);
                mp.start();
            }
        };

        Count.start();
    }

    public boolean getRunning(){
        return false;
    }
}

GCMIntentService

public class GCMIntentService extends IntentService {
    // Sets an ID for the notification, so it can be updated
    public static final int notifyID = 9001;
    NotificationCompat.Builder builder;

    public GCMIntentService() {
        super("GcmIntentService");
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        Bundle extras = intent.getExtras();
        GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);

        String messageType = gcm.getMessageType(intent);

        if (!extras.isEmpty()) {
            if (GoogleCloudMessaging.MESSAGE_TYPE_SEND_ERROR
                    .equals(messageType)) {
                sendNotification("Send error: " + extras.toString());
            } else if (GoogleCloudMessaging.MESSAGE_TYPE_DELETED
                    .equals(messageType)) {
                sendNotification("Deleted messages on server: "
                        + extras.toString());
            } else if (GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE
                    .equals(messageType)) {
                sendNotification(extras.get(ApplicationConstants.MSG_KEY)+"");
            }
        }
        GcmBroadcastReceiver.completeWakefulIntent(intent);
    }

    private void sendNotification(String msg) {
            Intent resultIntent = new Intent(this, AlertActivity.class);
            resultIntent.putExtra("msg", msg);
            PendingIntent resultPendingIntent = PendingIntent.getActivity(this, 0,
                    resultIntent, PendingIntent.FLAG_ONE_SHOT);

            NotificationCompat.Builder mNotifyBuilder;
            NotificationManager mNotificationManager;

            mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

            mNotifyBuilder = new NotificationCompat.Builder(this)
                    .setContentTitle("Alert")
                    .setContentText("You've received new message.")
                    .setSmallIcon(R.drawable.ic_launcher);
            // Set pending intent
            mNotifyBuilder.setContentIntent(resultPendingIntent);

            // Set Vibrate, Sound and Light
            int defaults = 0;
            //defaults = defaults | Notification.DEFAULT_LIGHTS;
            //defaults = defaults | Notification.DEFAULT_VIBRATE;
            // defaults = defaults | Notification.DEFAULT_SOUND;

            Notification notification = mNotifyBuilder.build();

            notification.flags |= Notification.FLAG_AUTO_CANCEL;
            notification.sound = Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.alarm);
            notification.defaults |= Notification.DEFAULT_VIBRATE;

            mNotifyBuilder.setDefaults(defaults);
            // Set the content for Notification
            mNotifyBuilder.setContentText("New message from Server");
            // Set autocancel
            mNotifyBuilder.setAutoCancel(true);
            // Post a notification
            mNotificationManager.notify(notifyID, notification);
    }
}

倒计时正在运行时启动活动

0 个答案: