Android Phonegap应用程序 - 将活动带到前面

时间:2016-05-08 12:15:46

标签: android push-notification phonegap-plugins background-foreground

我正在教自己如何在Android上使用Phonegap通知。虽然显示通知似乎是一个相当简单的过程

public void triggerTestNotification(String tag, int id,Context ctxt) 
{
  Intent notificationIntent = new Intent(context, PallActivity.class);
  notificationIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | 
  Intent.FLAG_ACTIVITY_CLEAR_TOP);

  notificationIntent.setAction(Intent.ACTION_MAIN);
  notificationIntent.addCategory(Intent.CATEGORY_LAUNCHER);

  PendingIntent contentIntent = PendingIntent.getActivity(ctxt, 0,  
  notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

  Notification not = new Notification.Builder(ctxt)
  .setContentTitle("Title").setContentText("Title")
  .setTicker("Tick tock")
  .setAutoCancel(true) 
  .setContentIntent(contentIntent)
  .setSmallIcon(ctxt.getApplicationInfo().icon).build();
   NotificationManager notificationManager = (NotificationManager)    
   ctxt.getSystemService(Context.NOTIFICATION_SERVICE);
   notificationManager.notify(tag, id, not);
 }

我发现的更难的是以下

  • 用户启动应用
  • 用户离开并开始做其他事情 - 该应用程序已落地
  • 收到通知
  • 显示
  • 用户点击通知。

此时应用程序应该回到前台。我以为我的意图代码

public class PallActivity extends Activity
{
  @Override
  public void onCreate(Bundle savedInstanceState)
  {
   super.onCreate(savedInstanceState);
  finish();
  forceMainActivityReload();
 }

 private void forceMainActivityReload()
 {
  PackageManager pm = getPackageManager();
  Intent launchIntent =    
  pm.getLaunchIntentForPackage(getApplicationContext().getPackageName());           
  startActivity(launchIntent);
 }

 @Override
 protected void onResume() 
 {
  super.onResume();
  final NotificationManager notificationManager = (NotificationManager) 
  this.getSystemService(Context.NOTIFICATION_SERVICE);
  notificationManager.cancelAll();
 }

}

会解决这个问题,但它什么都不做。显然,我在这里遇到了一些错误 - 也许是在Intent标志中。对于任何能够让我走上正轨的人,我都非常感激。

1 个答案:

答案 0 :(得分:2)

从您的oncreate中删除finish();,它将在您继续操作之前调用完成。

而不是启动PallActivity,似乎,您打算开始第二个活动,或者至少将PallActivity视为第二个活动。你不需要在forceMainActivityReload();内启动它。我将开始您希望从通知意图开始的活动,而不是使其更复杂和混淆问题。

notification.flags = Notification.FLAG_ONGOING_EVENT | Notification.FLAG_NO_CLEAR;   
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);

确保您使用的上下文是:

Context context = getApplicationContext();

并且,如评论中所述,从通知中删除这些:

notificationIntent.setAction(Intent.ACTION_MAIN);
notificationIntent.addCategory(Intent.CATEGORY_LAUNCHER);

如果需要,这里有更多细节:

Resume an activity when clicked on a notification

Android: How to resume an App from a Notification?

resuming an activity from a notification

Notification Resume Activity

Intent to resume a previously paused activity (Called from a Notification)

Android: resume app from previous position

How to make notification intent resume rather than making a new intent?