Develop Reference

How to call a fragment inside a Fragment?

So I'm working in Fragments that has 2 Fragments in it. take a look at the image below:
The first fragment that shows the list of the inventory is named fragment_purchase_item_list and on the right side is the fragment_purchase_list
What I want to do is when I clicked SCAN from the toolbar on the right fragment, fragment_qrscan will replace fragment_purchase_item_list. Like this image below:
Can someone please see and check why my code is not working? Thanks!
PurchaseListFragment.java
<-- start of code snippet -->
#Override
public void onClick(View v) {
int id = v.getId();
switch (id){
case R.id.btn_paypurchasetransaction:
Fragment chargeFragment = new ChargeFragment();
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.customersales_content, chargeFragment);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
break;
case R.id.layout_transaction_qrcode:
// Toast.makeText(getActivity(), "Scan Item", Toast.LENGTH_SHORT).show();
Fragment scanQRCodeFragment = new QRScanFragment();
FragmentManager fragmentManager1 = getFragmentManager();
FragmentTransaction fragmentTransaction1 = fragmentManager1.beginTransaction();
fragmentTransaction1.replace(R.id.inventory_fragment, scanQRCodeFragment);
fragmentTransaction1.addToBackStack(null);
fragmentTransaction1.commit();
break;
case R.id.layout_transaction_new:
Toast.makeText(getActivity(), "New Transaction", Toast.LENGTH_SHORT).show();
break;
}
}
<-- end of code snippet>
fragment_sales.xml
<?xml version="1.0" encoding="utf-8"?>
<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=".Fragments.SalesFragment"
android:orientation="horizontal"
android:id="#+id/customersales_content">
<fragment
android:id="#+id/inventory_fragment"
android:name="com.example.devcash.Fragments.PurchaseItemListFragment"
tools:layout="#layout/fragment_purchase_item_list"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="3">
</fragment>
<View
style="#style/Divider"
android:layout_width="1dp"
android:layout_height="wrap_content" />
<fragment
android:id="#+id/purchaselist_fragment"
android:name="com.example.devcash.Fragments.PurchaseListFragment"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="2"
tools:layout="#layout/fragment_purchase_list">
</fragment>
</LinearLayout>

Try replacing getFragmentManager() with getChildFragmentManager()

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();

Fragment to fragment to fragment get crash

I have a main activity , it contains lots of fragments.
Main activity layout looks like this:
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.user.taiwandigestionsociety_v11.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#FFFFFF">
<include layout="#layout/toolbar"/>
//switch fragment over here
<FrameLayout
android:id="#+id/mainFrame"
android:layout_gravity="end"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
</android.support.design.widget.AppBarLayout>
<android.support.design.widget.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="#android:color/transparent"
android:fitsSystemWindows="true"
app:headerLayout="#layout/nav_header">
</android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>
and I click the drawer item it will change to first fragment:
#Override
public void onClick(View view) {
int id = view.getId();
if (id == R.id.activitiesContents) {
//change to first fragment successful
switchFragment(ActivityList.newInstance());
toolbar.setTitle(R.string.activitiesContents);
drawerLayout.closeDrawer(GravityCompat.START);
}
}
my switch fragment function:
public void switchFragment(Fragment fragment) {
FragmentManager manager = getSupportFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
transaction.replace(R.id.mainFrame, fragment, null);
//transaction.addToBackStack(null);
transaction.commit();
}
then i click the button in first fragment, it changes to second fragment too:
//take me to second fragment succeed
switchFragment(ActivityHomePage.newInstance());
finally i click the button in second fragment, it crashed
//i want to switch to third fragment , just the same with previous
switchFragment(NewsInformation.newInstance());
the error log:
Why i got crash when i switch to third fragment? I completely have no clue.
I found the crash function function , because I set the class:
public class CommonSwitch extends Fragment {
//switch Fragment
public void switchFragment(Fragment fragment) {
FragmentManager manager = getActivity().getSupportFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
transaction.replace(R.id.mainFrame, fragment, null);
//transaction.addToBackStack(null);
transaction.commit();
}
}
and I try to call it new CommonSwitch.switchFragment(goToFragment);
now I have set public void switchFragment every Fragment class.
Why when I set new CommonSwitch will cause crash ?

Your Activity state is Not Maintain.
On second layer use Activity instead of Fragment . Follow Android Standards.
According to standards Third Fragment should be Activity. otherwise you have to maintain MainActivity state.
Thanks

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();

Android Fragment replacement issue

i am using the following layout for fragment transaction. i am replacing the fragment1
with new fragments by using the following code.i am attaching the layout file also for your reference. i am executing the below code for every listitem click.
Code:
Fragment newFragment = new Grades();
android.app.FragmentTransaction transaction = getFragmentManager().beginTransaction();
// Replace whatever is in the fragment_container view with this fragment
transaction.replace(R.id.fragment1, newFragment);
// Commit the transaction
transaction.commit();
Fragment newFragment = new Teachers();
android.app.FragmentTransaction transaction = getFragmentManager().beginTransaction();
// Replace whatever is in the fragment_container view with this fragment
transaction.replace(R.id.fragment1, newFragment);
// Commit the transaction
transaction.commit();
<LinearLayout
android:id="#+id/slidingPanel"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="left"
android:orientation="vertical"
android:background="#android:color/white"
>
<fragment
android:id="#+id/fragment1"
android:name="com.example.slideoutmenu.Item3"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</Linearlayout>
my doubt is should i replace the fragment1 everytime when i show a new fragment or should i replace the existing fragment if so how can i replace the existing fragment.

To replace the fragment:-
FragmentTransaction fragmentTransaction = getFragmentManager().beginTransaction();
YourFragment yourFragment = new YourFragment();
fragmentTransaction.replace(R.id.top_layout, yourFragment ); // top_layout is parent layout / viewgroup where you want to place your new fragment
fragmentTransaction.commit();