Develop Reference

Android - Call a fragment inside tab

I try to create an application that has two pages. First page is a tabbed page and second page is a detail page.
I create a tapped page using this guide. I have a mainactivity that contains view pager and 3 tabs(Tab1, Tab2, Tab3). Tab3 contains a button to navigate detail page. Each tab has own .java(extends Fragment) and .xml file. I edit fragmentThree.xml layout :
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/fragmentThree"]>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/goToDetail"
android:text="GO TO DETAIL" />
I create a new fragment for detail page. I set onclick method inside of Tab3.java;
goToDetail.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
FragmentTransaction transaction = fragmentManager.beginTransaction();
transaction.replace(R.id.mainActivity, new Detail());
transaction.commit();
}
});
When I press the button, it doesn't do anything. I don't replace the fragment.

Use you viewpager id instead of main layout id, where you set the tab layout fragment.
transaction.replace(R.id.viewpager, new Detail());

use Frame layout in Main Activity
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/parent">
In clicklistiner :-
FragmentManager fragmentManager = getActivity().getSupportFragmentManager();
FragmentTransaction transaction = fragmentManager.beginTransaction();
transaction.replace(R.id.parent, new Detail());
transaction.commit();

Back Button with strange behaviour on fragments

Here's my navigation:
HomeFragment -> LoginFragment -> CreateEventFragment
My HomeFragment is my first Fragment inside my MainActivity.
In my code, I'm replacing each one of them using the same view id( a FrameLayout inside my MainActivity's layout: R.id.container).
So every replace() is being called like this:
FragmentManager fragmentManager = mContext.getSupportFragmentManager();
fragmentManager.beginTransaction()
.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
.replace(containerId, nextFragment).addToBackStack(null).commit();
Except for LoginFragment to CreateEventFragment, because after the user logs in, he doesn't have to go back to LoginFragment so I don't call addToBackStack().
But something strange is happening:
When I'm on CreateEventFragment, after logging in successfully, and press the back button, my CreateEventFragment onDestroy() is not being called.
Debugging it I noticed that it isn't removed from the backStack, what am I doing wrong?
EDIT
Some code:
Common replace fragment method, inside BaseFragment, parent class of all three Fragments
public void replaceFragment(int containerId, Fragment nextFragment, boolean addToBackStack){
FragmentManager fragmentManager = mContext.getSupportFragmentManager();
if (addToBackStack)
fragmentManager.beginTransaction()
.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
.replace(containerId, nextFragment).addToBackStack(null).commit();
else
fragmentManager.beginTransaction()
.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
.replace(containerId, nextFragment).commit();
}
On HomeFragment:
BaseFragment nextFragment =
(PreferencesHandler.isLogged()) ?
CreateEventFragment.newInstance() :
LoginFragment.newInstance("create_event") ;
replaceFragment(R.id.main_fragment_container, nextFragment, true);
On LoginFragment:
public void goToNextFragment(){
Fragment nextFragment;
switch (mIntent){
case "create_event":
nextFragment = new CreateEventFragment();
break;
case "participate":
nextFragment = new ListsFragment();
break;
default:
nextFragment = new HomeFragment();
break;
}
replaceFragment(R.id.main_fragment_container, nextFragment, false);
}
My MainActivity's layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<include
android:id="#+id/toolbar_actionbar"
layout="#layout/toolbar_actionbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white"
android:layout_below="#+id/toolbar_actionbar"
tools:context=".MainActivity">
<FrameLayout
android:id="#+id/main_fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/toolbar_actionbar"
/>
<fragment android:id="#+id/navigation_drawer"
android:layout_width="#dimen/navigation_drawer_width"
android:layout_height="match_parent"
android:layout_gravity="start"
android:name="Fragments.`NavigationDrawerFragment`"
tools:layout="#layout/fragment_navigation_drawer" />
</android.support.v4.widget.DrawerLayout>
</RelativeLayout>
EDIT 2
Noticed that pressing back button calls LoginFragment onDestroy, but not CreateFragment's. Also noticed that backStack has LoginFragment, guess it shouldn't, right?

How can I add a fragment from within a viewpager that covers the viewpager tabs

Currently I have a viewpager setup according to the documentation. Within the first fragment tab I have setup a recycler view that contains a list of cardviews. Within each cardview I have a button which should open a new fragment. I would like this new fragment to overlap the action bar tabs (something similiar to how facebook comments work when you click the comment button). I am not sure how to get it working. I created an extra framelayout and relative layout above my viewpager hoping that it would overlap, however this doesn't seem to work. How can I have my new fragment cover the action bar tabs as well? I am not asking how to replace the current viewpager fragment if that makes sense.
I filled the new fragment with a red background, the result after envoking the onclick listener is shown here: http://i.imgur.com/yHYpzGr.png
In my onclick listener I have:
FragmentManager fragmentManager = activity.getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.add(R.id.container, commentFragment,"comment_fragment_tag");
fragmentTransaction.commit();
My main activity layout that contains the viewpager:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="#+id/main_activity">
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
</FrameLayout>

Try this .. hope it works
FragmentManager fragmentManager = activity.getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container, commentFragment,"comment_fragment_tag");
fragmentTransaction.commit();
or
Fragment fr = new FragmentTwo() ;
FragmentManager fm = getFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.container, fr);
ft.commit();
hear fr is the new fragment that would be replaced

Fragment Default View Wont Change

i really need help.
This is how my application looks like. I got two(2) fragments where the left side is for the buttons and for the right side is for my details.
The bigger fragment has a default display which i called splash. An image is viewed here, a bigger image that would take the height of the device.
So my case is when i click/press button 1, it would display the fragment for that but the image is still present.
My question now is, how to i get rid of the 'splash display'?
Here is my code
/**
* on main listener
*/
#Override
public void onMainListener(String whatPress){
Fragment fr = null;
if(whatPress.equals("button1"))
fr = new FragmentOne();
if(whatPress.equals("button2"))
fr = new FragmentTwo();
if(whatPress.equals("button3"))
fr = new FragmentThree();
FragmentManager fm = getFragmentManager();
FragmentTransaction fragmentTransaction = fm.beginTransaction();
fragmentTransaction.replace(R.id.detailFragment, fr, whatPress);
fragmentTransaction.commit();
}
The code above is the one handles which button is pressed.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<fragment
android:id="#+id/menuFragment"
android:name="FragmentMenu"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="match_parent"
class="com.mizsh.Fragment_Menu" />
<fragment
android:id="#+id/detailFragment"
android:name="com.mizsh.Fragment_Splash"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="match_parent" />
</LinearLayout>
The code above is my main.xml

You should replace the detailFragment with FrameLayout
<FrameLayout android:id="#+id/detailFragment" android:layout_weight="1"
android:layout_width="0px" android:layout_height="match_parent" />
and replace it with Fragment_Splash in the onCreate of the activity
FragmentTransaction fragmentTransaction = fm.beginTransaction();
fragmentTransaction.replace(R.id.detailFragment, fragmentSplash, null);
fragmentTransaction.commit();
then replace with chosen fragment on click
FragmentTransaction fragmentTransaction = fm.beginTransaction();
fragmentTransaction.replace(R.id.detailFragment, chosenFragment, null);
fragmentTransaction.commit();

Nothing shown If replace current fragment with another one

I have such layout:
frame_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/items"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
Next, in FragmentActivity I do:
setContentView(R.layout.fragment_layout);
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
String tag = MyListFragment.class.getName();
MyListFragment fragment = (MyListFragment)
getSupportFragmentManager().findFragmentByTag(tag);
if (fragment == null) {
fragment = new MyListFragment();
ft.add(R.id.items, fragment, tag);
}
else {
ft.replace(R.id.items, fragment, tag);
}
ft.addToBackStack(null);
ft.commit();
When I call this code once, fragment shown perfectly! But, when it called twice I see no content!
After some investigation, I found that problem's caused by this:
setContentView(R.layout.fragment_layout);
E.g., when it is called once, fragment content is perfectly shown! But I need to call setContentView a lot of times to show another fragments.
Where's the mistake?
P.S. It's possible to make MyListFragment hardcoded into XML, but this does not fit to me, because I need to replace layout contents with other fragments.

As nobody answers, I found another solution: keep layout for every frame and show/hide them.
That's how I did it.... Main layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="#+id/container1"
android:visibility="gone"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
<FrameLayout
android:id="#+id/container2"
android:visibility="gone"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
That's how I show fragment2 (belongs to container2) in fragment activity:
findViewById(R.id.container1).setVisibility(View.GONE);
findViewById(R.id.container2).setVisibility(View.VISIBLE);
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
String tag = MyFragment.class.getName();
Fragment fragment = (Fragment)getSupportFragmentManager().findFragmentByTag(tag);
if (fragment == null) {
fragment = new MyFragment();
ft.add(R.id.container2, fragment, tag);
}
ft.addToBackStack(null);
ft.commit();