android-fragmentactivity

问题 I have developed an application that have one activity and in this activity there are add some fragment in drawer list item (side).So my issue is when I am open on any drawer fragment item and then pressed back button application going to close.So how to handle back event like 3 - 2 -1 when pressed back its open precious fragment. Code of main activity public class MainActivity extends FragmentActivity { private DrawerLayout DrawerLayout; private ListView DrawerList; private

问题 I have developed an application that have one activity and in this activity there are add some fragment in drawer list item (side).So my issue is when I am open on any drawer fragment item and then pressed back button application going to close.So how to handle back event like 3 - 2 -1 when pressed back its open precious fragment. Code of main activity public class MainActivity extends FragmentActivity { private DrawerLayout DrawerLayout; private ListView DrawerList; private

问题 I'm using Android support library v13. There is a strange thing I couldn't understand. When creating new activity, I load fragment as: Main activity layout: ... <FrameLayout android:id="@+id/fragment_1" ... /> In onCreate() of main activity: mFragment = (FragmentActivity) getSupportFragmentManager().findFragmentById(R.id.fragment_1); // if screen orientation changed, no need to create new instance of fragment if (mFragment == null) { mFragment = ...; // create new instance of fragment

问题 I'm not very expert in android's Fragment. In my last project i was using TabActivity, but because of it's deprecation now I'm starting implements an ActionBar using Fragments. Here is the code of my Tab Class: public class TabInterventoClass extends FragmentActivity{ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ActionBar actionBar = getSupportActionBar(); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); actionBar

问题 I'm not very expert in android's Fragment. In my last project i was using TabActivity, but because of it's deprecation now I'm starting implements an ActionBar using Fragments. Here is the code of my Tab Class: public class TabInterventoClass extends FragmentActivity{ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ActionBar actionBar = getSupportActionBar(); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); actionBar

问题 What I am doing : updating UI (Fragment UI) from Broadcast Receiver. But while finding Fragment I am getting null in return. OnReceive (Broadcast Receiver): if(MainActivity.getInstace()!=null){ MainActivity.getInstace().updateUI(); } MainActivity.class (Fragment Activity): public void updateUI() { MainActivity.this.runOnUiThread(new Runnable() { public void run() { //getting null here SlidingTab frag = (SlidingTab)getSupportFragmentManager().findFragmentByTag("slidingtab"); frag.updateUI(); }

问题 What I am doing : updating UI (Fragment UI) from Broadcast Receiver. But while finding Fragment I am getting null in return. OnReceive (Broadcast Receiver): if(MainActivity.getInstace()!=null){ MainActivity.getInstace().updateUI(); } MainActivity.class (Fragment Activity): public void updateUI() { MainActivity.this.runOnUiThread(new Runnable() { public void run() { //getting null here SlidingTab frag = (SlidingTab)getSupportFragmentManager().findFragmentByTag("slidingtab"); frag.updateUI(); }

问题 I am using this class A which extends another abstract class (and this abstract class extends FragmentActivity) and in one of my function with in A class I want to get getActivity() for my current activity A. But whenever I use getActivity , It gives me error that getActivity() method is not defined type for my class. Please help me !! How can I achieve this?? Code for my class A public class A extends B { protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState)

问题 I have a FragmentActivity , when the user navigates through the app, I replace the current fragment with the fragment the user has selected and add add the transactions to backstack. Everything works fine, the user can go back to the previous fragments by pressing the back button. The problem occurs when the device orientation changes: suppose the first fragment that the user sees is A, then he navigates to B and from B to C. The content inside of C is better appreciated in landscape mode,

问题 I have 3 Tabs like in the android development tutorial Now what I want to do is very simple I use Fragments on each page. I want to show different content from a rss feed on each page. The problem is when I go to the next tab it runs AsyncTask (which is in onCreateView) of the previous Fragment. So you start on Page 1 it loads the content fine. Then when you go to Page 2 is runs the onCreateView of the Fragment of Page 1 again. And obviously gives an NullException. The point is it should not