I am trying to go to another fragment when clicking a button but i need to keep the button even when i am in the other fragment. I came out with this but it doesn't go to the other fragment when i click the button.in the activity nothing happens at all except the first fragment is shown:
public class Signupnew extends AppCompatActivity {
Button next;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_signupnew);
getSupportActionBar().hide();
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
next = (Button) findViewById(R.id.nextf);
final Fragment fragment = new f1();
final Fragment fragment2 = new f2();
FragmentManager fm = getSupportFragmentManager();
final FragmentTransaction transaction = fm.beginTransaction();
transaction.replace(R.id.contentFragment, fragment);
transaction.commit();
next.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (fragment.isAdded()){
System.out.println("added");
transaction.replace(R.id.contentFragment,fragment2);
}
if (fragment2.isAdded()){
System.out.println("added2");
transaction.replace(R.id.contentFragment, fragment);
}
}
});
}
}
XML:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:orientation="horizontal"
android:layout_height="match_parent"
android:background="#drawable/signupmorenew"
tools:context=".Signupnew">
<FrameLayout
android:id="#+id/contentFragment"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button
android:id="#+id/nextf"
android:layout_width="350dp"
android:layout_height="60dp"
android:layout_marginLeft="28dp"
android:layout_marginTop="540dp"
android:background="#drawable/nextsignupandsignin"
android:fontFamily="#font/varroxfont"
android:text="التالي"
android:textColor="#FDBC30"
android:textSize="20dp" />
</FrameLayout>
</LinearLayout>
You have to call FragmentTransaction#commit to apply changes. Also I think it is a good practice to call the whole stack of operations for fragment transaction.
getSupportFragmentManager().beginTransaction()
.replace()
.commit()
Related
I'm trying to show an image below a button only after the button has been pressed. My problem is that the fragment is shown immediately when the app is started and not only after the button has been pressed.
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void say_hello(View view){
Fragment fragment = new ExampleFragment();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.fragment2, fragment).commit();
}
}
public class ExampleFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.news_articles, container, false);
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:tools="http://schemas.android.com/tools"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:orientation="vertical"
android:layout_height="fill_parent"
tools:context=".MainActivity">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal|center_vertical"
android:text="PRESS THIS"
android:id = "#+id/test_button"
android:background="#drawable/test_button"
android:onClick="say_hello"
/>
<fragment
android:id="#+id/fragment2"
android:name="com.example.tic_tac_toe.ExampleFragment"
android:layout_width="match_parent"
android:layout_height="643dp" />
</LinearLayout>
<ImageView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/cool_dog">
</ImageView>
I'm guessing the fragment shows up when the app is started because of the name I give to the fragment in the XML, but the fragment needs a name otherwise I only get error. How do I get the fragment to display nothing before I have clicked the button?
Instead of using <fragment /> view in your xml, you can use Framelayout and add your fragment to this Framelayout on button click using the following code -
FragmentTransaction transaction = getFragmentManager().beginTransaction();
transaction.add(R.id.mainframe, fragment);
transaction.commit();
Where mainframe is the id of Framelayout.
You can try doing this
android.app.Fragment fragment = getActivity().getFragmentManager().findFragmentByTag("YOUR_FRAGMENT_TAG");
getActivity().getFragmentManager().beginTransaction().hide(fragment);
inside your click event.
I have developed an app, in that I have a fragment transaction,
MainActivity contains Fragment View.
MainActivity have three Button on top of the screen, that remain same when we go this Activity to another Fragment, only MainActivity Fragment part change when we click out of three.
But, my problem is that when I move from the this MainActivity to Fragment when click on First-Button that is OK, but when I click on Second-Button, result is overwrite the screen with first Fragment to another Fragment.
it is in same Activity so , I can not remove Fragment through remove(fr).commit();
Because if I do that then it become non-clickable may be fragment remove so not response on click of next button.
overall result, It display both FirstFragment and NewFragment Screen , when i move to NewFragment how i remove the FirstFragment screen ?
In MainActivity three button have following code to change fragment :
Main Activity :
public class MasterActivity extends Activity {
ImageView imgOne, imgTwo, imgThree;
Fragment fr;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_master);
imgOne = (ImageView) findViewById(R.id.imgOne);
imgTwo = (ImageView) findViewById(R.id.imgTwo);
imgThree = (ImageView) findViewById(R.id.imgThree);
imgOne.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
fr = new FirstFragment();
FragmentManager fm = getFragmentManager();
FragmentTransaction fragmentTransaction = fm.beginTransaction();
fragmentTransaction.replace(R.id.fragment_place, fr);
fragmentTransaction.addToBackStack(null);
//fragmentTransaction.remove(fr).commit();
//getFragmentManager().beginTransaction().remove(fr).commit();
fragmentTransaction.commit();
}
});
imgTwo.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
fr = new SecondFragment();
FragmentManager fm = getFragmentManager();
FragmentTransaction fragmentTransaction = fm.beginTransaction();
fragmentTransaction.replace(R.id.fragment_place, fr);
fragmentTransaction.addToBackStack(null);
//fragmentTransaction.remove(fr).commit();
// getFragmentManager().beginTransaction().remove(fr).commit();
fragmentTransaction.commit();
}
});
its xml file like following :
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#000000"
android:gravity="bottom"
android:weightSum="3" >
<ImageView
android:id="#+id/imgOne"
android:layout_width="0dp"
android:layout_height="27dp"
android:layout_gravity="center"
android:layout_weight="1"
android:src="#drawable/img1" />
<ImageView
android:id="#+id/imgTwo"
android:layout_width="0dp"
android:layout_gravity="center"
android:layout_height="27dp"
android:layout_weight="1"
android:src="#drawable/img2"/>
<ImageView
android:id="#+id/imgThree"
android:layout_width="0dp"
android:layout_gravity="center"
android:layout_height="27dp"
android:layout_weight="1"
android:src="#drawable/img3" />
</LinearLayout>
<fragment
android:id="#+id/fragment_place"
android:name="packagename.FirstFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.87"/>
<LinearLayout/>
<LinearLayout/>
First Fragment :
public class FirstFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View r = inflater.inflate(R.layout.first_fratgment, container, false);
return r;
}
}
Second Fragment :
public class SecondFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View r = inflater.inflate(R.layout.second_fratgment, container, false);
return r;
}
}
But when click on one button Fragment button to another it display both first and second Fragment screens.
So how to resolve it and how to remove first view when second click?
I used this
fragmentTransaction.remove(fr).commit();
and this
getFragmentManager().beginTransaction().remove(fr).commit();
but it's not working.
Fragment declared in the layout are treated differently by Android. Replace
<fragment
android:id="#+id/fragment_place"
android:name="packagename.FirstFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.87"/>
with a FrameLayout, or a subclass of ViewGroup of your choice, and handle all the transactions programmatically. The rest looks good to me
Its better to use a viewGroup or a layout/FrameLayout instead of fragments (fragment navigations on button clicks in an Activity). Because fragments have their own lifecycle and fragment hold thier views or are not killed when you do fragment transition within an activity.
Although if you still want to go with fragment, first load a fragment of first button click and handle the click events of other two buttons by removing the fragment previously attached (Fragment attached to first button click).
This can be done by:
getSupportFragmentManager().beginTransaction().remove(YOUR_FIRST_FRAGMENT).commit();
and after this you can write a code to add fragment in this place,
getFragmentManager().beginTransaction().replace(YOUR_FIRST_FRAGMENT, new YourSecondButtonFragment()).commit(); and hence this can be done for your third button click too, just need to change the fragment attached to second button.
I hope this will help you.
Fragments that are hard coded in XML, cannot be replaced. Use the FramLayout as a fragment container instead.
in your XML replace
<fragment
android:id="#+id/fragment_place"
android:name="packagename.FirstFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.87"/>
<LinearLayout/>
with
<FrameLayout
android:id="#+id/contentFragment"
android:layout_width="match_parent"
android:layout_height="0px"
android:layout_weight="2" />
Now, Do follow the following code style to achieve your goal:
First set the onClickListeners to all the imageviews:
like: imgOne.setOnClickListener(this);
#Override
public void onClick(View v) {
Fragment fragment = null;
switch (v.getId()) {
case R.id.imgOne:
fragment = new Fragment1();
break;
case R.id.imgTwo:
fragment = new Fragment2();
break;
}
if (fragment != null) {
FragmentManager fm = getSupportFragmentManager();
fm.beginTransaction().replace(R.id.contentFragment, fragment).commit();
} else {
Log.e(LOG_TAG, "Error in fragment transaction.");
}
}
Hope this helps.
you can use: getSupportFragmentManager().beginTransaction().remove(fragment).commit();
Hope this will help.
Make necessary changes. Replace your activity and xml with this.
It should run solid if you do.
public class MasterActivity extends Activity {
ImageView imgOne, imgTwo, imgThree;
Fragment fr;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_master);
imgOne = (ImageView) findViewById(R.id.imgOne);
imgTwo = (ImageView) findViewById(R.id.imgTwo);
imgThree = (ImageView) findViewById(R.id.imgThree);
getFragmentManager().beginTransaction().add(R.id.fragment_place, new FirstFragment()).commit();
imgOne.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
getFragmentManager().beginTransaction().replace(R.id.fragment_place, new FirstFragment()).commit();
}
});
imgTwo.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
getFragmentManager().beginTransaction().replace(R.id.fragment_place, new SecondFragment()).commit();
}
});
xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#000000"
android:gravity="bottom"
android:weightSum="3" >
<ImageView
android:id="#+id/imgOne"
android:layout_width="0dp"
android:layout_height="27dp"
android:layout_gravity="center"
android:layout_weight="1"
android:src="#drawable/img1" />
<ImageView
android:id="#+id/imgTwo"
android:layout_width="0dp"
android:layout_gravity="center"
android:layout_height="27dp"
android:layout_weight="1"
android:src="#drawable/img2"/>
<ImageView
android:id="#+id/imgThree"
android:layout_width="0dp"
android:layout_gravity="center"
android:layout_height="27dp"
android:layout_weight="1"
android:src="#drawable/img3" />
</LinearLayout>
<FrameLayout
android:id="#+id/fragment_place"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.87"/>
<LinearLayout/>
<LinearLayout/>
when i move to NewFragment how i remove the first frament screen ?
well you can do that by hiding the old(first) Fragment source
getSupportFragmentManager().beginTransaction().hide(getSupportFragmentManager()
.findFragmentById(R.id.the_id_of_my_first_fragment));
you can also get him(the first fragment) back by the same approach source
getSupportFragmentManager().beginTransaction().show(getSupportFragmentManager()
.findFragmentById(R.id.the_id_of_my_first_fragment));
This approach buys flexibility and not re-changing your app's architecture, and logic, and also one line of work
im always late to a party (:
copy and pest code in your button click event.
fr = new FirstFragment();
fragmentManager = getSupportFragmentManager();
fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.fragment_place, fr);
fragmentTransaction.commit();
this is completed work.
Now I know this is a very simple question and was asked many times, but non of the solutions provided previously has worked for me.
I have an activity with a FrameLayout as follows:
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<FrameLayout
android:id="#+id/replace_me"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
</FrameLayout>
</android.support.constraint.ConstraintLayout>
And in my MainActivity class I have the following:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
replaceFragment(new ChooseLevelFragment(), false);
}
}
public void replaceFragment(Fragment fragment, boolean addToBackStack) {
FragmentTransaction replace = getSupportFragmentManager().beginTransaction().replace(R.id.replace_me, fragment);
if (addToBackStack) {
replace.addToBackStack(null);
}
replace.commit();
Log.d(TAG, "Fragment replaced!");
}
The first fragment is being shown correctly. However, when the user clicks on an item from the menu and logs in, the app should replace the current fragment with the new one
private void showAuthenticationDialog() {
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
Fragment fragmentByTag = getSupportFragmentManager().findFragmentByTag(AuthenticationDialogFragment.TAG);
if (fragmentByTag != null) {
fragmentTransaction.remove(fragmentByTag);
}
fragmentTransaction.addToBackStack(null);
AuthenticationDialogFragment authenticationDialogFragment = AuthenticationDialogFragment.newInstance(() -> {
replaceFragment(new ParentControlPanelFragment(), true);
});
authenticationDialogFragment.show(fragmentTransaction, AuthenticationDialogFragment.TAG);
}
The new fragment is not being replaced even after the commit. I can see my log message but not the new fragment. I'm not quite sure where the problem is.
The problem was that I was trying to replace the fragment before I dismiss the dialog.
The correct approach is to dismiss the dialog first then try to replace the fragment.
I have a Button in Fragment. If Button is clicked it has to replace the Fragment with another Fragment. The Fragments in activity_main.xml is created statically.
<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"
android:background="#efefef"
android:orientation="vertical"
tools:context=".MainActivity" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="3" >
<Button
android:id="#+id/bHome"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_weight="1"
android:background="#000000"
android:padding="3dp"
android:text="Home"
android:textColor="#ffffff" />
<Button
android:id="#+id/bEvents"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_weight="1"
android:background="#f8bd0e"
android:padding="3dp"
android:text="Events" />
<Button
android:id="#+id/bNearby"
android:layout_width="wrap_content"
android:layout_height="50dp"
android:layout_weight="1"
android:background="#f8bd0e"
android:padding="3dp"
android:text="Nearby" />
</LinearLayout>
<LinearLayout
android:id="#+id/llFragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="horizontal" >
<fragment
android:id="#+id/fHome"
android:name="com.example.fragmentstack.Home"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10dp" />
<fragment
android:id="#+id/fEvents"
android:name="com.example.fragmentstack.Events"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10dp" />
<fragment
android:id="#+id/fNear"
android:name="com.example.fragmentstack.NearBy"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10dp" />
<FrameLayout
android:id="#+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</FrameLayout>
</LinearLayout>
The output of activity_main.xml is
Main Activity:
public class MainActivity extends FragmentActivity implements OnClickListener {
Button home, events, near;
Fragment f1, f2, f3, f4;
FragmentManager manager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
home = (Button) findViewById(R.id.bHome);
events = (Button) findViewById(R.id.bEvents);
near = (Button) findViewById(R.id.bNearby);
home.setOnClickListener(this);
events.setOnClickListener(this);
near.setOnClickListener(this);
manager = getSupportFragmentManager();
f1 = manager.findFragmentById(R.id.fHome);
f2 = manager.findFragmentById(R.id.fEvents);
f3 = manager.findFragmentById(R.id.fNear);
}
#Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.bHome:
if (home.isPressed()) {
home.setBackgroundColor(Color.BLACK);
home.setTextColor(Color.WHITE);
events.setBackgroundResource(R.color.Yellow);
near.setBackgroundResource(R.color.Yellow);
events.setTextColor(Color.BLACK);
near.setTextColor(Color.BLACK);
FragmentTransaction transaction = getSupportFragmentManager()
.beginTransaction();
transaction.hide(f2);
transaction.hide(f3);
transaction.show(f1);
transaction.commit();
}
break;
case R.id.bEvents:
if (events.isPressed()) {
events.setBackgroundColor(Color.BLACK);
events.setTextColor(Color.WHITE);
home.setBackgroundResource(R.color.Yellow);
near.setBackgroundResource(R.color.Yellow);
home.setTextColor(Color.BLACK);
near.setTextColor(Color.BLACK);
FragmentTransaction transaction1 = getSupportFragmentManager()
.beginTransaction();
transaction1.hide(f1);
transaction1.hide(f3);
transaction1.show(f2);
transaction1.commit();
}
break;
case R.id.bNearby:
if (near.isPressed()) {
near.setBackgroundColor(Color.BLACK);
near.setTextColor(Color.WHITE);
home.setBackgroundResource(R.color.Yellow);
events.setBackgroundResource(R.color.Yellow);
home.setTextColor(Color.BLACK);
events.setTextColor(Color.BLACK);
FragmentTransaction transaction2 = getSupportFragmentManager()
.beginTransaction();
transaction2.hide(f1);
transaction2.hide(f2);
transaction2.show(f3);
transaction2.commit();
}
break;
}
}
}
Now Home extends Fragment. the xml layout of home has one Button and one TextView.Here onClicking Button I'm replacing the Home Fragment with new Update Profile Fragment.
public class Home extends Fragment {
Button btn;
View view;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
view = inflater.inflate(R.layout.home, container, false);
init();
return view;
}
private void init() {
btn = (Button) view.findViewById(R.id.bUpdate);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Fragment fg = new UpdateProfile();
FragmentTransaction fragmentTransaction = getFragmentManager()
.beginTransaction();
fragmentTransaction.replace(R.id.fragment_container, fg);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}
});
}
}
R.id.fragment_container is present in activity_main.xml. Now the problem I'm facing is when clicking the button it is not replacing the fragment with new Fragment.
Now the problem I'm facing is when clicking the button it is not
replacing the fragment with new Fragment.
The transaction does occur but it's not visible as you add that fragment to a container that will be pushed out of the screen(all of your layout's fragments have width set to match_parent so they will fill the LinearLayout's width and the FrameLayout will be pushed out of the screen).
Also you do the replace transaction on a container that doesn't hold the previous fragments, this means that the old fragments will still be visible on the screen(plus the new added fragment).
The system you setup is not the proper way to handle your scenario. From the images it seems you have a tab like layout and in this case you should have only one container in which all of your fragments will reside(to avoid the extra work of showing/hiding the proper fragment and also provide a decent BACK button experience).
Secondly if you're going to work(do transactions) with those fragments you should really add them programmatically as replace will not go well with a static fragments. There are a lot of tutorials out there on how to make a tab like layout with fragments.
I am using fragments for Android 2.2 (with backward compatibility) for the first time. I created a simple example to see how it works.
Here is the code snapshot.
Main Activity code:
public class FragmentExampleActivity extends FragmentActivity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main_activity);
RadioButton radioButton1 = (RadioButton)findViewById(R.id.radioButton1);
radioButton1.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
changeView1();
}
});
radioButton1.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
//changeView1();
}
});
}
protected void changeView1() {
// Create new fragment and transaction
Fragment newFragment = new RadioActivity1();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
// Replace whatever is in the fragment_container view with this fragment,
// and add the transaction to the back stack
transaction.replace(R.id.relativeLayout, newFragment);
transaction.addToBackStack(null);
// Commit the transaction
transaction.commit();
}
}
Main Activity Layout file (main_activity)
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" android:id="#+id/relativeLayout">
<FrameLayout android:id="#+id/frameLayout" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:layout_alignParentTop="true"
android:layout_above="#+id/radioButtonGroupLayout">
<fragment android:name="com.example.fragmentexample.HelloWorldFragment"
android:id="#+id/generalView" android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>
<RadioGroup android:id ="#+id/radioButtonGroupLayout" android:layout_width="fill_parent" android:layout_height="wrap_content"
android:orientation="horizontal" android:layout_alignParentBottom="true">
<RadioButton android:id="#+id/radioButton1" android:text="Radio 1"
android:layout_width="wrap_content" android:layout_height="wrap_content"/>
<RadioButton android:id="#+id/radioButton2" android:text="Radio 2"
android:layout_width="wrap_content" android:layout_height="wrap_content"/>
<RadioButton android:id="#+id/radioButton3" android:text="Radio 3"
android:layout_width="wrap_content" android:layout_height="wrap_content"/>
</RadioGroup>
</RelativeLayout>
Initial Fragment Class
public class HelloWorldFragment extends Fragment
{
public HelloWorldFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
View v = inflater.inflate(R.layout.hello_world_fragment_layout,null);
return v;
}
}
Fragment which is called when radio button is clicked/checked
public class RadioActivity1 extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.radio_activity_one_layout,null);
return v;
}
}
layout for second fragment class
<?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" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
</LinearLayout>
snapshot of code to replace the fragment
// Create new fragment and transaction
Fragment newFragment = new RadioActivity1();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.remove(getSupportFragmentManager().findFragmentById(R.id.generalView));
// Replace whatever is in the fragment_container view with this fragment,
// and add the transaction to the back stack
transaction.replace(R.id.relativeLayout, newFragment);
transaction.addToBackStack(null);
// Commit the transaction
transaction.commit();
My problem is that the fragment is not getting replaced... I can see the HelloFragment Layout behind the second fragment.
You can only remove/replace a fragment programmatically if it was added programmatically in the first place.
Remove the fragment node from main_activity.xml so that frameLayout has nothing in it. Then in your onCreate do something like this:
FragmentTransaction transaction = this.getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.frameLayout, new HelloWorldFragment());
transaction.addToBackStack(null);
transaction.commit();
And then your replace code would look something like:
Fragment newFragment = new RadioActivity1();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
// Replace whatever is in the fragment_container view with this fragment,
// and add the transaction to the back stack
transaction.replace(R.id.frameLayout, newFragment);
transaction.addToBackStack(null);
// Commit the transaction
transaction.commit();
Also, you may need to change HelloWorldFragment to use an overload of LayoutInflater.inflate, add false as the last parameter, attachToRoot.