通知PendingIntent附加内容始终为空 [英] Notification PendingIntent extras always empty
问题描述
我整天都在用不同的解决方案来了解这一点，但到目前为止还没有奏效.
I read about this all day long with different kind of solutions but non worked so far.
我有一个上传服务(IntentService)，可将更新发送到ResultReceiver.接收方创建并管理通知.
I have an upload service (IntentService) that sends updates to a ResultReceiver. The receiver creates and manages the Notification.
单击通知(错误或成功)后，将加载MainActivity.但是捆绑销售商品始终为空.如何更改我的代码以访问/获取捆绑包?
After clicking on the notification (error or success) the MainActivity is loaded. But the bundle is always null. How can I change my code to access/get the bundle?
如果我处于另一个活动中，或者该应用程序处于后台并且停止运行，则会发生这种情况.
This happens if I'am in another Activity, if the App is in background and if the app is stopped.
CustomResultReceiver:
private Context mContext;
private NotificationManager mNotificationManager;
private NotificationCompat.Builder mBuilder;
public static final String RETURN_MESSAGE = "RETURN_MESSAGE";
public static final String RETURN_STATUS = "RETURN_STATUS";
private final int id = 1;
public CustomResultReceiver(Handler handler, Context context) {
super(handler);
mContext = context;
mNotificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
mBuilder = new NotificationCompat.Builder(context);
mBuilder.setContentTitle("Upload data")
.setContentText("uploading...")
.setSmallIcon(R.mipmap.ic_launcher);
}
创建通知.在onReceiveResult中，我通知该通知，如果发生错误或上传成功，则添加ContentIntent.
Creates the Notification. In onReceiveResult I notify the notification and if an error occured or the upload is successful I add a ContentIntent.
protected void onReceiveResult(int resultCode, Bundle resultData) {
super.onReceiveResult(resultCode, resultData);
String message;
boolean success;
switch (resultCode) {
case RESULT_ERROR:
message = resultData.getString(BROADCAST_MESSAGE, null);
boolean failed = resultData.getBoolean(EXTENDED_ACTION_FAILED, false);
if (failed) {
mBuilder.setProgress(0, 0, false);
mBuilder.setContentText("Aborted! Error while uploading.");
mBuilder.setContentIntent(createContentIntent(message, false));
mNotificationManager.notify(id, mBuilder.build());
}
break;
case RESULT_FINISHED:
message = resultData.getString(UPLOAD_MESSAGE, null);
success = resultData.getBoolean(UPLOAD_STATUS, false);
if (success) {
mBuilder.setProgress(0, 0, false);
mBuilder.setContentText("Upload successful");
mBuilder.setContentIntent(createContentIntent(message, true));
mNotificationManager.notify(id, mBuilder.build());
}
break;
}
}
createContentIntent()为PendingIntent提供一个结果消息和一个成功布尔值:
createContentIntent() provides a PendingIntent with a result message and a success boolean:
private PendingIntent createContentIntent(String message, boolean success) {
Intent intent = new Intent(mContext, MainActivity.class);
intent.putExtra(RETURN_MESSAGE, message);
intent.putExtra(RETURN_STATUS, success);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP);
intent.setAction("NOTIFIY RESPONSE");
return PendingIntent.getActivity(mContext, 1, intent, PendingIntent.FLAG_UPDATE_CURRENT);
}
我正在使用接收器:
android.app.NotificationManager;
android.app.PendingIntent;
android.content.Context;
android.content.Intent;
android.os.Bundle;
android.os.Handler;
android.os.ResultReceiver;
android.support.v4.app.NotificationCompat;
MainActivity是android.support.v7.app.AppCompatActivity.
The MainActivity is an android.support.v7.app.AppCompatActivity.
为了创建PendingIntent，我已经尝试了几种不同的Flag组合.
For the creation of the PendingIntent I already tried several different Flag combinations.
以下是清单中的一些片段:
Here are some snippets from the manifest:
我的权限:
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-feature android:name="android.hardware.camera"/>
我通过通知打开的活动:
The Activity that I open via the Notification:
<activity
android:name=".views.activities.MainActivity"
android:label="@string/title_activity_main"
android:screenOrientation="landscape"
android:theme="@style/AppTheme.NoActionBar"
android:windowSoftInputMode="stateHidden">
<intent-filter>
<action android:name="android.intent.action.RUN"/>
</intent-filter>
</activity>
这里的服务:
<service android:name=".services.UploadService"/>
当我从ResultReceiver启动活动时，会发生以下情况:
For when I launch the activity from the ResultReceiver following happens:
活动开始，并在我检查捆绑的地方调用onCreate，如下所示:
The activity starts and onCreate is called where i check for the bundle like this:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.act_main);
...
Intent old = getIntent();
if (old != null) {
Bundle extras = old.getExtras();
if (extras != null) {
Log.d(MainActivity.class.getSimpleName(), "Message: " + extras.getString(CustomResultReceiver.RETURN_MESSAGE, "empty"));
Log.d(MainActivity.class.getSimpleName(), "Status: " + extras.getBoolean(CustomResultReceiver.RETURN_STATUS, false));
}
}
...
}
推荐答案
所以我终于找到了问题所在.在调试了几个标志选项并更改了请求代码之后.此处的请求代码与该问题无关.
So I finally found the problem. After debugging several flag options and changing request codes. The request code here is irrelevant to the problem.
对空(非空)包负责的是标志ACTIVITY_NEW_TASK.
Responsible for the empty (not null) bundle is the flag ACTIVITY_NEW_TASK.
如果我将所有其他经过测试的标志用于Intent或PendingIntent，则一切正常.
If I went with all other tested flags for the Intent or the PendingIntent everything works fine.
android doc 对于ACTIVITY_NEW_TASK说以下内容:
The android doc says following for ACTIVITY_NEW_TASK:
使用此标志时，如果活动已在运行任务 您现在开始，则新的活动将不会开始； 而是将当前任务简单地带到 屏幕上显示的是最后一次进入的状态.参见FLAG_ACTIVITY_MULTIPLE_TASK 标记来禁用此行为.
When using this flag, if a task is already running for the activity you are now starting, then a new activity will not be started; instead, the current task will simply be brought to the front of the screen with the state it was last in. See FLAG_ACTIVITY_MULTIPLE_TASK for a flag to disable this behavior.
这似乎表明旧的Intent仍然存在，而不是我在接收器中构建的新Intent.有趣的事实:即使我关闭了该应用程序然后启动了PendingIntent，该捆绑包还是空的.据我了解，该文档将另行声明(活动不在任务中吗?->具有新活动的新任务).
This seems to indicate that the old Intent is still present and not the new one which I build in the receiver. Funny fact: even if I closed the app and then started the PendingIntent the bundle was empty. The doc as for my understanding would state it otherwise (activity not in a task? -> new task with new activity).
这篇关于通知PendingIntent附加内容始终为空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！
