android - Check if Fragment exists in Fragment TabHost Activity -

-

I have an activity, which implements the fragment tab host with 2 tabs The first tab is a list view and The second tab is the same data in a detailed data view. Below is the code snippet from My Piece Activity: 

  Find the Fragmentabhaostsubbiid (android.R.id.tabhost); MTabHost.setup (this, getSupportFragmentManager (), R. layout.action_list); MTabHost.addTab (mTabHost.newTabSpec ("Tab1"). Set indicator ("list"), ListFragment.class, null); MTabHost.addTab (mTabHost.newTabSpec ("Tab2") .Setindicator ("Extlist"), expandable listfreagment class, arg2);   
 The issue now is that if I call again the pieces of its construction again, I need to check that the piece is already present, to add a new one Not required I tried under the stuff, but it is not working  
  piece f = getSupportFragmentManager (). FindFragmentByTag ("list"); If (f! = Listed for blank & amp; amp; events) {Log.i ("ListActivity", "Already Created"); }   
 For the above code, I am getting blank for the fragment F when the activity is called again Read some similar posts but nothing works, please advise how I It can be ensured that when the inventories are said that the pieces are not made again. Thank you.   
 
 
 I do not think it should be a matter of keeping a piece alive in its tabidity. If your activity is not destroyed, then you will not be fragments, but if your activities are destroyed, and even in pieces, it is not a major problem that they have been rebuilt, because the old example will soon be removed from the garbage collector Will be cleaned by. I do not understand why you want to control this behavior. Simply initialize your tabbar into the  onCreate ()  of your activity, delete it in  onDestroy ()  and let the Android Lifecycle do this work.

Comments

Post a Comment

Popular posts from this blog

java - ImportError: No module named py4j.java_gateway -

-
I'm trying to call the Python using the Java program py4j . I've been installing the plug-in Eclipse and test name Piidvi project. I'm trying to execute the following part of the code found on py4j webpage: Import from py4j.java_gateway to JavaGateway, java_import gateway = JavaGateway () jvm = gateway.jvm java_import (jvm, '' Org.eclipse Kkorkrisorsej. * ") Vrkspes_rut = Jvankresourkesplginkgetvrkspas (). GetRoot (Gateway .help (workspace_root, '* Projects *') project_names = [project.getName () (for projects workpace_root.getProjects))] print (Projekt_nam) But I There is an error in import. I have checked that the P4JJ is present in the Jar Eclipse plugin directory. Can anyone help please? I had to install the py4j application
Read more

python - Receiving "KeyError" after decoding json result from url -

-
I am new to Python I am trying to parse JSON result from a URL. Basically, I was using the following: response = urllib.request.urlopen (url) json_obj = json.load (response) It should be a stroke "str 'not' bytes' in the lines of a given" JSON object, so after searching on the StackoverView Flo, I decode the response in this way: F = urllib.request.urlopen (Url) charset = f.info (). Get_param ('charset', 'utf8') data = f.read () decoded = json.loads (data.decode (charset)) If I print "decode" I is as follows: { 'link': { 'summary data': 'https: // localhost / piwebapi / streams / p0_7qHaW4UHU-RlCaz8tpasAAQAAAAU0hJTExNQU42NDIwXFNJTlVTT0lE / summary' 'value': 'https: // localhost / Piwebapi / streams / P0_7qHaW4UHU-RlCaz8tpasAAQAAAAU0hJTExNQU42NDIwXFNJTlVTT0lE / price ',' InterpolatedData ':' https: // localhost / Piwebapi / streams / P0_7qHaW4UHU-RlCaz8tpasAAQAAAAU0hJTE...
Read more

.net - Creating a new Queue Manager and Queue in Websphere MQ (using C#) -

-
"itemprop =" text "> I am writing applications that use WebSphere MQ to send messages. My unittests (for flow), I want to verify that I have put the correct message on the response queue. I am trying to figure out how to do this. My main obstacle is that I think it might be scary to clear the queue before running in my queue because the same queue can be used by other applications, I thought a decent solution would be a new line The manager will remove the queue for my solidarity and after using it. So my question is: Is it possible to use C # by using queue manager and queue? After the For future reference and future people, who want to make queues. I thought how to make and remove IBM MQ QE (not quenhers) with PCM messaging. It is not very simple, but it can be done. We have implemented it in a library and it is being used to create and delete commands before and after integration tests. The most important part of the code in this library is shown in the...
Read more