Android Notification PendingIntent Extras null [英] Android Notification PendingIntent Extras null

问题描述

我正在尝试将信息从通知发送到调用的活动，而从我的活动中我得到了 null.

I am trying to send information from notification to invoked activity, while from my activity I got null.

通知代码为:

private void showNotification() {
Intent resultIntent = new Intent(this, MainActivity.class);
if (D)
    Log.d(TAG, "Id: " + Id);
resultIntent.putExtra("ineedid", deviceId);

TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
stackBuilder.addParentStack(MeterActivity.class);
stackBuilder.addNextIntent(resultIntent);
PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0,
    PendingIntent.FLAG_UPDATE_CURRENT);
// Bundle tmp = resultIntent.getExtras();
// if (tmp == null) {
// Log.d(TAG, "tmp bundle is null");
// } else {
// long id = tmp.getLong("ineedid", -1);
// Log.d(TAG, "tmp id : " + id);
// }
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
    BLEMessengerService.this)
    .setSmallIcon(R.drawable.ic_action_search)
    .setContentTitle("Event tracker")
    .setContentText("Events received").setOngoing(true)
    .setContentIntent(resultPendingIntent)
    .setWhen(System.currentTimeMillis());

int mId = R.string.service_notification_start_service;
mNM.notify(mId, mBuilder.getNotification());
}

用于从主要活动中的意图获取信息的代码；

Code for get information from intent in main activity;

Bundle extras = getIntent().getExtras();
if (extras != null) {
    long deviceID = getIntent().getLongExtra("ineedid",
        -1);
    if (ID == -1) {
    if (D)
        Log.i(TAG_D, "Wrong Id received.");
    finish();
    } else {
    device = dataSource.getDeviceByID(deviceID);
    if (D)
        Log.i(TAG_D, "Get the id.");
    }
} else {
    if (D)
    Log.d(TAG_D, "Bundle is null");
    finish();
}

在通知得到通知之前我已经验证过，bundle 不为空，并且它在 extras 中有 id.而当我试图从意图中获取它时，它消失了.帮助.

I have verified before the notification get notified, bundle is not null, and it has id in extras. While, when I tried to fetch it from intent, it's gone. Help.

推荐答案

我刚刚得到答案，添加行:resultIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);

I just got the answer, add line: resultIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);

注意:如果您将其添加为 resultIntent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);它不会工作.

NOTICE: if you add it as resultIntent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP); It won't work.

我还尝试了其他标志，例如FLAG_ACTIVITY_NEW_TASK"和FLAG_ACTIVITY_RESET_TASK_IF_NEEDED".两者都不在这里.

I also tried other flags like, "FLAG_ACTIVITY_NEW_TASK" and "FLAG_ACTIVITY_RESET_TASK_IF_NEEDED". neither works here.

这篇关于Android Notification PendingIntent Extras null的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！