android Come aprire l'ultima attività quando si tocca la notifica

Question

Ho osservato diverse domande simili ma non potevano aiutarmi. Devo visualizzare l'ultima attività quando la notifica del clic dell'utente. Qui è il mio codice:

NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(YourService.this) 
     .setContentTitle(getResources().getText(R.string.app_name)) 
     .setContentText(getServiceStateDescription(YourService.this)) 
     .setSmallIcon(iconId) 
     .setWhen(System.currentTimeMillis()); 

Intent nIntent = getPreviousIntent(); 
TaskStackBuilder stackBuilder = TaskStackBuilder.create(this); 
// Adds the back stack 
stackBuilder.addParentStack(MainActivity_.class); 
stackBuilder.addNextIntent(nIntent); 
PendingIntent pendingIntent = 
     stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT); 
notificationBuilder.setContentIntent(pendingIntent); 

startForeground(ContextConstants.LAUNCHER_SERVICE_NOTE_ID, notificationBuilder.build()); 


private Intent getPreviousIntent() { 
Intent newIntent = null; 
final ActivityManager activityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); 
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { 
    final List<ActivityManager.AppTask> recentTaskInfos = activityManager.getAppTasks(); 
    if (!recentTaskInfos.isEmpty()) { 
     for (ActivityManager.AppTask appTaskTaskInfo: recentTaskInfos) { 
      if (appTaskTaskInfo.getTaskInfo().baseIntent.getComponent().getPackageName().equals(ContextConstants.PACKAGE_NAME)) { 
       newIntent = appTaskTaskInfo.getTaskInfo().baseIntent; 
       newIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
      } 
     } 
    } 
} else { 
    final List<ActivityManager.RecentTaskInfo> recentTaskInfos = activityManager.getRecentTasks(1024, 0); 
    if (!recentTaskInfos.isEmpty()) { 
     for (ActivityManager.RecentTaskInfo recentTaskInfo: recentTaskInfos) { 
      if (recentTaskInfo.baseIntent.getComponent().getPackageName().equals(ContextConstants.PACKAGE_NAME)) { 
       newIntent = recentTaskInfo.baseIntent; 
       newIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
      } 
     } 
    } 
} 
if (newIntent == null) newIntent = new Intent(); 
return newIntent; 

}

Secondo punto è che se ho usato deprecato metods al fine di costruire la notifica, la visualizzazione di ultima attività le grandi opere come ho voluto Ecco il codice:

Notification note = new Notification(iconId, 
      getResources().getText(R.string.serviceStarted), 
      System.currentTimeMillis()); 
    note.flags |= Notification.FLAG_ONGOING_EVENT; 
    note.flags |= Notification.FLAG_NO_CLEAR; 

    Intent nIntent = new Intent(); 
    nIntent = getPreviousIntent(nIntent); 
    PendingIntent pi = PendingIntent.getActivity(this, 0, nIntent, 0); 
    note.setLatestEventInfo(this, 
      getResources().getText(R.string.app_name), getServiceStateDescription(YourService.this), pi); 

    startForeground(ContextConstants.LAUNCHER_SERVICE_NOTE_ID, note); 

But i don't want use deprecated metods anymore, that's why i'm here explaining. Thanks in advance!

E ho visto anche this doc.

Ecco il mio manifesto:

<?xml version="1.0" encoding="utf-8"?> 

<permission android:name="com.my.package.permission.C2D_MESSAGE" android:protectionLevel="signature" /> 
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/> 
<uses-permission android:name="android.permission.INTERNET"/> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> 
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> 
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> 
<uses-permission android:name="android.permission.READ_PHONE_STATE"/> 
<uses-permission android:name="android.permission.VIBRATE"/> 
<uses-permission android:name="android.permission.WAKE_LOCK"/> 
<uses-permission android:name="android.permission.READ_CONTACTS"/> 
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" /> 
<uses-permission android:name="com.my.package.permission.C2D_MESSAGE" /> 
<uses-permission android:name="android.permission.GET_TASKS"/> 

<application 
    android:name=".MyApplication" 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" 
    android:theme="@style/Theme.AppCompat.Light"> 
    <activity android:name=".activity.StartingActivity_" android:label="@string/app_name"> 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 
      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
    <activity 
     android:name=".activity.MainActivity_" 
     android:configChanges="orientation|screenSize"> 
    </activity> 
    <activity 
     android:name=".activity.ComposeEmailActivity_" 
     android:configChanges="orientation|screenSize" 
     android:parentActivityName=".activity.MainActivity_"> 
     <meta-data 
      android:name="android.support.PARENT_ACTIVITY" 
      android:value=".activity.MainActivity_" /> 
    </activity> 
    <activity 
     android:name=".activity.EditAccountActivity_" 
     android:configChanges="orientation|screenSize" 
     android:parentActivityName=".activity.MainActivity_"> 
     <meta-data 
      android:name="android.support.PARENT_ACTIVITY" 
      android:value=".activity.MainActivity_" /> 
    </activity>    

    <!--android:process=":remote" is for working in background--> 
    <service android:enabled="true" android:name=".service.YourService"/>  

</application> 

Answer 1

Il tuo problema non è con i metodi in uso per costruire la Notification. Il tuo problema è il tuo uso di TaskStackBuilder. L'uso di questa classe comporta un sacco di magia nascosta dietro le quinte e fa un sacco di presupposti su come si desidera che l'app si comporti. Purtroppo, queste supposizioni sono per lo più sbagliate :-(

Se si desidera portare la propria applicazione in primo piano in qualsiasi stato si trovasse quando è passato allo sfondo, non si desidera utilizzare TaskStakBuilder e si don anche . 't devono utilizzare tutte quelle brutte ActivityManager metodi solo fare questo:?!

NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(YourService.this) 
    .setContentTitle(getResources().getText(R.string.app_name)) 
    .setContentText(getServiceStateDescription(YourService.this)) 
    .setSmallIcon(iconId) 
    .setWhen(System.currentTimeMillis()); 

Intent nIntent = getPackageManager(). 
     getLaunchIntentForPackage(ContextConstants.PACKAGE_NAME); 
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, nIntent, 
    PendingIntent.FLAG_UPDATE_CURRENT); 
notificationBuilder.setContentIntent(pendingIntent); 

startForeground(ContextConstants.LAUNCHER_SERVICE_NOTE_ID, 
    notificationBuilder.build());