This is a really lame question, but I really cannot figure out why it happens, so please help me out.
I have a simple activity and I add a fragment to it dynamically. The problem is that once the fragment is added to the activity, the activity layout is also visible. Why does this happen?
MainActivity.java
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btnLoad = (Button) findViewById(R.id.btn1);
View.OnClickListener listener = new View.OnClickListener() {
#Override
public void onClick(View v) {
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
HelloFragment hello = new HelloFragment();
fragmentTransaction.add(R.id.rootView, hello, "HELLO");
fragmentTransaction.commit();
}
};
btnLoad.setOnClickListener(listener);
}
}
activity_main.xml
<LinearLayout 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" tools:context=".MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/rootView"
android:orientation="vertical">
<TextView
android:text="#string/hello_world"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="#+id/btn1"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="OK"/>
</LinearLayout>
</LinearLayout>
HelloFragment.java
public class HelloFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
/** Inflating the layout for this fragment **/
View v = inflater.inflate(R.layout.hello_fragment_layout, null);
return v;
}
}
hello_fragment_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="fragment 1"/>
</LinearLayout>
Convention is to have a FrameLayout that you use fragmentTransaction.replace()/add() on.
You shouldn't have views like TextView and Button in your MainActivity layout file. Instead, have those in another fragment and just have a FrameLayout in your MainActivity xml. Load the fragment with TextView/Button first, and call replace on button click with your new fragment.
Set a background color to your fragment linearLayout and make it clickable
The fragment is just another element on the layout. Adding it to the layout does not automatically remove other views. If you want the fragment to replace the content of rootView you need to remove rootview's children views first. Something like:
((LinearLayout)findViewById(R.id.rootView)).removeAllViews();
So your onClick method should look like this:
#Override
public void onClick(View v) {
((LinearLayout)findViewById(R.id.rootView)).removeAllViews();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
HelloFragment hello = new HelloFragment();
fragmentTransaction.add(R.id.rootView, hello, "HELLO");
fragmentTransaction.commit();
}
your rootview work as container for both fragment and your views on activity. check it and make separate view for fragment.
I know it's very late to answer this question but for those who are still looking do the following in your activity 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" tools:context=".MainActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:text="#string/hello_world"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="#+id/btn1"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="OK"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/rootView"
android:orientation="vertical">
</RelativeLayout>
And fragment layout to following:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:background="#color/white" <!--Add this-->
android:layout_height="match_parent">
<TextView
android:text="#string/hello_world"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="#+id/btn1"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="OK"/>
</LinearLayout>
activity_main.xml
<FrameLayout 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" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/rootView"
android:orientation="vertical">
<TextView
android:text="#string/hello_world"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="#+id/btn1"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="OK"/>
</LinearLayout>
<FrameLayout
android:id="#+id/fragmentContainer"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</FrameLayout>
</FrameLayout>
MainActivity.java
View.OnClickListener listener = new View.OnClickListener() {
#Override
public void onClick(View v) {
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
HelloFragment hello = new HelloFragment();
fragmentTransaction.add(R.id.fragmentContainer, hello, "HELLO");
fragmentTransaction.commit();
}
};
I have a solution for this to achieve what you can do is make two fragment one for textview and button your showing as default when activity is opened and another which you have already created as HelloFragment.
From Activity onCreate() method call the first fragment with default textview and button and from the click listener of that button call HelloFramgent.
Step1: Crate another fragment with any name MainFragment having a xml layout as follows:-
main_fragment_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:text="#string/hello_world"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="#+id/btn1"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="OK"/>
</LinearLayout>
MainFragment.java - Class
public class MainFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
/** Inflating the layout for this fragment **/
View v = inflater.inflate(R.layout.main_fragment_layout, container, false);
Button btnLoad = (Button) v.findViewById(R.id.btn1);
View.OnClickListener listener = new View.OnClickListener() {
#Override
public void onClick(View view) {
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
HelloFragment hello = new HelloFragment();
fragmentTransaction.add(R.id.rootView, hello, "HELLO");
fragmentTransaction.commit();
}
};
btnLoad.setOnClickListener(listener);
return v;
}
}
Step2: Call the MainFragment from activity onCreate() method
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
MainFragment mainFragment = new MainFragment();
fragmentTransaction.add(R.id.rootView, mainFragment, "MAIN_FRAGMENT");
fragmentTransaction.commit();
}
Build your user interface in Fragments (In most cases one Fragment equals one screen) and then use Activities to arrange and display those Fragments.
check this: click here to view detailed answer
You have two linear layouts, one inside another, so you need to do the following steps:
Set id to 1 linear layout rootView and next to the childview.
Find your child view:
View view = findViewById(R.id.child_view);
view.setVisibility(View.INVISIBLE);
Replace your rootView with your fragment:
getSupportFragmentManager().beginTransaction().add(R.id.rootview, new blankFragment())
.addToBackStack(null).commit();
Then override:
#override
public void onBackPressed() {
android.support.v4.app.FragmentManager fm = getSupportFragmentManager();
if (fm.getBackStackEntryCount() > 0) {
view.setVisibility(View.VISIBLE);
}
super.onBackPressed();
}
The Activity views are not being masked against the Fragment's views, so both appear. One solution is to load the fragment into a frame in the main activity's layout which has a slight elevation (2 dp). When the fragment is loaded its base elevation will cause it to always draw over the activity. Set the fragments parent container with a color to hide the activity views.
MasterActivity layout:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Activity Title"
android:layout_marginTop="10dp"
android:layout_marginBottom="20dp"
android:textSize="24sp" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/title"
android:layout_centerHorizontal="true"
android:textAllCaps="false"
android:text="Button1" />
<Button
android:id="#+id/button2"
android:textAllCaps="false"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/button1"
android:layout_centerHorizontal="true"
android:text="Button2" />
<!-- Fragment holder, with elevation -->
<FrameLayout
android:translationZ="2dp"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/fragHolder"
/>
The Fragment layout has a background color:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#fff"
android:layout_margin="10dp">
<TextView
android:id="#+id/title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Test Background Task"
android:textSize="24sp" />
</RelativeLayout>
Make your First Layout invisible while calling fragment and again while returning from fragment make your main view visible and remove fragment at that time so it will not conflict with each other it worked for really well just check it once
Related
I'm trying to use a FragmentManager to replace a fragment but for some reason the OnCreateView() isn't called.
This is the code I use to create the fragment:
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
FeedbackListFragment listFragment = new FeedbackListFragment();
fragmentTransaction.replace(R.id.feedback_placeholder, listFragment);
fragmentTransaction.commit();
This is the code for FeedbackListFragment:
public class FeedbackListFragment extends ListFragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
Log.d(TAG,"create feedbacklistview");
View view = inflater.inflate(R.layout.feedback_popup, container, false);
return view;
}
}
This is my main layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/background_normal"
android:id="#+id/main_layout">
<FrameLayout
android:id="#+id/feedback_placeholder"
android:layout_width="match_parent"
android:visibility="gone"
android:layout_height="match_parent"></FrameLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="90dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="#string/overview_scan_text"
android:id="#+id/scantagLabel"
android:layout_gravity="center"
android:gravity="center"
android:textSize="42sp"
android:textIsSelectable="false"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="180dp"
android:id="#+id/cleanjack_image"
android:src="#drawable/logo_clean_jack"
android:layout_gravity="left|center_vertical"
android:contentDescription="#string/app_name"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="20dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="#+id/messageLabel"
android:layout_gravity="center"
android:gravity="center"
android:textSize="20sp"
android:textIsSelectable="false"/>
</LinearLayout>
I've removed the android:visibility="gone" to see if that was the issue but it didn't work.
I tried your Sample code
Activity :
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_list);
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
FeedbackListFragment listFragment = new FeedbackListFragment();
fragmentTransaction.replace(R.id.feedback_placeholder, listFragment);
fragmentTransaction.commit();
}
FragmentList :
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.feedback_popup, container, false);
return view;
}
XML Activity
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#bcbcbc"
android:id="#+id/main_layout">
<FrameLayout
android:id="#+id/feedback_placeholder"
android:layout_width="match_parent"
android:visibility="gone"
android:layout_height="match_parent"></FrameLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="90dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="overview_scan_text"
android:id="#+id/scantagLabel"
android:layout_gravity="center"
android:gravity="center"
android:textSize="42sp"
android:textIsSelectable="false"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="180dp"
android:id="#+id/cleanjack_image"
android:src="#drawable/ic_launcher_background"
android:layout_gravity="left|center_vertical"
android:contentDescription="#string/app_name"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingTop="20dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text=""
android:id="#+id/messageLabel"
android:layout_gravity="center"
android:gravity="center"
android:textSize="20sp"
android:textIsSelectable="false"/>
</LinearLayout>
Xml Fragment
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"></ListView>
</android.support.constraint.ConstraintLayout>
Have you set the id of listView of fragmentList to
android:id="#android:id/list"
Hope this is helpful :)
From documentation for onCreateView in ListFragment:
Provide default implementation to return a simple list view. Subclasses
can override to replace with their own layout. If doing so, the
returned view hierarchy must have a ListView whose id
is {#link android.R.id#list android.R.id.list} and can optionally
have a sibling view id {#link android.R.id#empty android.R.id.empty}
that is to be shown when the list is empty. If you are overriding this method with your own custom content,
consider including the standard layout {#link android.R.layout#list_content}
in your layout file, so that you continue to retain all of the standard
behavior of ListFragment. In particular, this is currently the only
way to have the built-in indeterminant progress state be shown.
This is inside the LinearLayout of my activtiy_main.xml. It contains an emply frame layout and a button outside the frame.
<FrameLayout
android:layout_weight="0.8"
android:background="#color/colorAccent"
**android:id="#+id/placeholder"**
android:layout_width="match_parent"
android:textAlignment="center"
android:layout_height="match_parent">
</FrameLayout>
<Button
android:id="#+id/button"
android:text="Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
This is my fragment1.xml :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView android:text="Hello Sir"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/> </LinearLayout>
I have successfully created a java file named hello for this fragment.
And lastly this is my MainActivty.java
public class MainActivity extends AppCompatActivity {
Button change , change2;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
change = (Button) findViewById(R.id.button);
change.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Fragment fragment = new hello();
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.setCustomAnimations(R.animator.fragment_slide_left_enter,
R.animator.fragment_slide_left_exit,
R.animator.fragment_slide_right_enter,
R.animator.fragment_slide_right_exit);
ft.replace(R.id.placeholder, fragment);
ft.commit();
}
});
}
}
This executes fine but the problem is the FrameLayout(from the activtiy_main.xml) stays even after the fragment appears on top of it.
Screen Shot after the button is clicked
I want to make the frameLayout(id - placeholder) to disappear or hide after the fragment has come on top of it.
Please help me.
P.S: This just a test application. Can't share the original one.
Thanks in advance.
Just keep mainActivity as place holder
<FrameLayout
android:layout_weight="0.8"
android:background="#color/colorAccent"
android:id="#+id/placeholder"
android:layout_width="match_parent"
android:textAlignment="center"
android:layout_height="match_parent">
</FrameLayout>
Add one fragment_one with button in activity and replace fragment_one with fragment_two it will work fine.
fragment_one
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="#+id/button"
android:text="Button"
android:layout_width="wrap_content"
android:layout_height="wrap_content" /> </LinearLayout>
fragment_two
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView android:text="Hello Sir"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/> </LinearLayout>
I have a ListFragment with a floating action button. When the button is clicked, i want to replace the ListFragment with a CreateListFragment. Instead, the CreateListFragment is placed on top of the ListFragment and the button and textview from the ListFragment are still visible. I am not sure what went wrong. How do I completely replace the ListFragment with the CreateListFragment?
Here is the screenshot before the button is clicked
http://i.stack.imgur.com/k2HxP.png
Here is a screenshot after the button is clicked
http://i.stack.imgur.com/TYN47.png
list_fragment
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/listFrame">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<android.support.design.widget.FloatingActionButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/fab"
android:layout_gravity="bottom|end"
app:backgroundTint="#color/colorAccent"
android:src="#drawable/create"/>
<TextView
android:id="#+id/tvEmpty"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:hint="No Shopping Lists Yet"
android:layout_gravity="center"
android:textSize="20sp"/>
</FrameLayout>``
createlist_fragment
<FrameLayout 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:padding="10dp"
tools:context="com.lavineoluoch.helloworld.swiftpay.app.CreateListFragment">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:id="#+id/etListTitle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/title"/>
<EditText
android:id="#+id/etAddItem"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="#string/items"/>
<RelativeLayout
android:id="#+id/buttons"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:id="#+id/btnEditItem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/btnEdit"
android:background="#color/colorPrimary"
android:textColor="#color/white"
/>
</RelativeLayout>
</LinearLayout>
ListFragment.java
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
final View view = inflater.inflate(R.layout.list_fragment, container, false);
fab = (FloatingActionButton)view.findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
CreateListFragment createListFragment = new CreateListFragment();
android.support.v4.app.FragmentTransaction fragmentTransaction = getActivity().getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.listFrame,createListFragment);
fragmentTransaction.commit();
}
});
return view;
}
In your root view for your Fragments insert this line of code:
android:background="?android:windowBackground"
As you have a see through background your view can still see the reminiscence of the replaced Fragment as the view hasn't yet updated.
The above answer should solve your problem, however I would recommend re-structuring your approach and instead launching a new Activity which contains the CreateListFragment when the FAB is pressed. Doing so would result in easier to maintain code which is also easier to read and would be best practice. It would also mean that the user can press their back button and navigate back to ListActivity/ListFragment without you needing to manually handle Fragment back stacks.
I am trying to make an activity containing two fragments.The first one has 3 nested fragments which I will use as a tabs and the second one only contains buttons. I don't want to add the buttons fragment into other fragments because I don't want it to reload. Right now i don't have any errors but my buttons fragment doesn't show up. Here are my fragments and my activity.
my main activity:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().requestFeature(Window.FEATURE_ACTION_BAR);
setContentView(R.layout.activity_main);
Fragment statistics = new StatisticsFragment();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.add(R.id.fragment_statistics, statistics).commit();
Fragment buttons = new MainPageButtonsFragment();
FragmentTransaction buttonsTransaction = getSupportFragmentManager().beginTransaction();
buttonsTransaction.add(R.id.main_page_buttons_fragment,buttons).commit();
his layout
<RelativeLayout android:orientation="vertical" >
<FrameLayout
android:id="#+id/fragment_statistics"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="#+id/main_page_buttons_fragment"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#id/fragment_statistics"/>
I wont write my buttons fragment because it is not necessary I will only say its root tag is FrameLayout.
my statistics fragment (the one with tabs)
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Fragment currentDayFragment = new CurrentDayFragment();
FragmentTransaction transaction1 = getChildFragmentManager().beginTransaction();
transaction1.add(R.id.current_day_fragment, currentDayFragment).commit();
Fragment configurationInfoFragment = new ConfigurationInfoFragment();
FragmentTransaction transaction2 = getChildFragmentManager().beginTransaction();
transaction2.add(R.id.configuration_info_fragment, configurationInfoFragment).commit();
Fragment expensesInfoFragment = new ExpensesInfoFragment();
FragmentTransaction transaction3 = getChildFragmentManager().beginTransaction();
transaction3.add(R.id.expenses_info_fragment, expensesInfoFragment).commit();
LayoutInflater lf = getActivity().getLayoutInflater();
View statisticsView = lf.inflate(R.layout.fragment_statistics, container, false);
return statisticsView;
}
his layout:
<FrameLayout >
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="#id/current_day_fragment"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="#id/configuration_info_fragment"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="#id/expenses_info_fragment"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</android.support.v4.view.ViewPager>
the nested fragments just have root tag FrameLayout and couple of TextViews in it. The result is just an activity with 3 tabs and no buttons fragment.
I am new to android programming and I am completely lost in this. Help Please!
Try using giving custom height like this....
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<FrameLayout
android:id="#+id/fragment_statistics"
android:layout_width="fill_parent"
android:layout_height="250dp"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<FrameLayout
android:id="#+id/main_page_buttons_fragment"
android:layout_width="fill_parent"
android:layout_height="250dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentBottom="true" />
</RelativeLayout>
Relative layout does not have android:orientation param
I thing first fragment cover second one
Change relative layout with LinearLayout
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="#+id/fragment_statistics"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="#+id/main_page_buttons_fragment"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#id/fragment_statistics"/>
</LinearLayout>
I can't replace the fragments using the codes below. I mean that the second fragment appeared under the first fragment. The first fragmnent didn't hide as I expected. What is wrong here?
Thanks a lot!
My activity :
public class MainActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final FragmentManager fm = this.getFragmentManager();
final Fragment fragmenttwo = new FragmentTwo();
Button fmchangebutton = (Button) this.findViewById(R.id.fmchangebutton);
fmchangebutton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.fragment1, fragmenttwo);
ft.commit();
}
});
};
};
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:id="#+id/fmchangebutton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Change Fragment" />
<fragment
android:id="#+id/fragment1"
android:name="com.example.fragementex.FragmentOne"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
fragmnetone.xml
<?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="vertical" >
<EditText
android:id="#+id/editText1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="clip_horizontal"
android:ems="10"
android:gravity="center_vertical|center_horizontal|top|fill_vertical"
android:text="This is Fragment One" >
</EditText>
</LinearLayout>
fragmnettwo.xml
<?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="vertical" >
<EditText
android:id="#+id/editText1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="clip_horizontal"
android:ems="10"
android:gravity="center_vertical|center_horizontal|top|fill_vertical"
android:text="This is Fragment Two" >
</EditText>
</LinearLayout>
You cannot replace a fragment attached to the layout, you need to create a host container as FrameLayout like this:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:id="#+id/fmchangebutton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Change Fragment" />
<FrameLayout
android:id="#+id/frame_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
Then, you will able to - first - add and display the first fragment and replace it with the second as follows:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// set the layout which contains the framelayout
setContentView(R.layout.activity_main);
final FragmentManager fm = this.getFragmentManager();
final Fragment fragmentone = new FragmentOne();
final Fragment fragmenttwo = new FragmentTwo();
// if first initialization
if(savedInstanceState == null) {
// display with "add" the first fragment
this.getFragmentManager().beginTransaction()
.add(R.id.frame_layout, fragmentone).commit();
}
Button fmchangebutton = (Button) this.findViewById(R.id.fmchangebutton);
fmchangebutton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View v) {
FragmentTransaction ft = fm.beginTransaction();
// "replace" the fragment inside the framelayout
ft.replace(R.id.frame_layout, fragmenttwo);
ft.commit();
}
});
}