通知仅适用于第一次
问题描述:
我创建时发生的通知,但我现在面临一个问题,就是我每次都得到了通知,但我的活动仅刷新一次,或当我做我的装置解锁该得到刷新一个活动。每当我收到任何通知时,我都无法刷新活动。我在活动中实施了广播。通知仅适用于第一次
代码GCM IntentService类
@Override
protected void onHandleIntent(Intent intent) {
Bundle extras = intent.getExtras();
String msgg = intent.getStringExtra("message");
final ResultReceiver receiver = intent.getParcelableExtra("receiver");
Bundle bundle = new Bundle();
if (!extras.isEmpty()) {
if (GoogleCloudMessaging.
MESSAGE_TYPE_SEND_ERROR.equals(messageType)) {
sendNotification(this, msgg);
} else if (GoogleCloudMessaging.
MESSAGE_TYPE_DELETED.equals(messageType)) {
sendNotification(this, msg);
updateMyActivity(this,msgg);
bundle.putString("result", msg);
receiver.send(STATUS_FINISHED, bundle);
} else if (GoogleCloudMessaging.
MESSAGE_TYPE_MESSAGE.equals(messageType)) {
updateMyActivity(this,msgg);
sendNotification(this, msg);
}
}
发送通知代码
private void sendNotification(Context context, String message) {
Intent resultIntent;
int icon = R.mipmap.ic_launcher;
long when = System.currentTimeMillis();
NotificationCompat.Builder nBuilder;
Uri alarmSound = RingtoneManager
.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.BigPictureStyle notiStyle = new
NotificationCompat.BigPictureStyle();
notiStyle.setBigContentTitle("afewtaps");
notiStyle.setSummaryText(message);
nBuilder = new NotificationCompat.Builder(context)
.setSmallIcon(icon)
.setContentTitle("afewtaps")
.setStyle(new NotificationCompat.BigTextStyle().bigText(message))
.setLights(Color.BLUE, 500, 500).setContentText(message)
.setAutoCancel(true).setTicker("Notification from afewtaps")
.setSound(alarmSound);
resultIntent = new Intent(context,
LoginActivity.class);
resultIntent.putExtra("message", message);
resultIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent resultPendingIntent = PendingIntent.getActivity(context,
notify_no, resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);
// Show the max number of notifications here
if (notify_no < 9) {
notify_no = notify_no + 1;
} else {
notify_no = 0;
}
nBuilder.setContentIntent(resultPendingIntent);
NotificationManager nNotifyMgr = (NotificationManager) context
.getSystemService(context.NOTIFICATION_SERVICE);
nNotifyMgr.notify(notify_no + 2, nBuilder.build());
}
信息发送到广播
// This function will create an intent. This intent must take as parameter the "unique_name" that you registered your activity with
static void updateMyActivity(Context context, String message) {
Intent intent = new Intent("unique_name");
//put whatever data you want to send, if any
intent.putExtra("message", message);
//send broadcast
context.sendBroadcast(intent);
}
此结束对意图类代码。
现在我的活动代码
@Override
public void onResume() {
super.onResume();
// connectToDatabase();
getActivity().registerReceiver(mMessageReceiver, new IntentFilter("unoque_name"));
}
//Must unregister onPause()
@Override
public void onPause() {
super.onPause();
getActivity().unregisterReceiver(mMessageReceiver);
}
//This is the handler that will manager to process the broadcast intent
private BroadcastReceiver mMessageReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// Extract data included in the Intent
String message = intent.getStringExtra("message");
//do other stuff here
connectToDatabase();
}
};
答
的通知工作,因为你是通过它在后台运行的IntentService送他们。
不能使用这种方法来更改活动什么。这是因为活动并不总是在运行,它会被破坏,它的生命周期会暂停。因此,相应的接收机也不总是运行。
一个解决方案是,您可以在IntentService中执行更新,并在活动启动时,您可以在onResume()中重新加载。
我也做了同样 –
我想我是不太清楚。我的意思是说你的活动和与之相关的广播接收机不会一直运行。这意味着该活动永远不会得到更新。 我提出的解决方案是,您在意向服务中获取数据库更新,使用共享首选项保存数据,并且当用户启动活动时,活动从共享首选项加载数据。 – theawless