Develop Reference

How to disable the transition of fragments?

I am building a quiz app with three questions and therefore I have 6 Fragments but I would like to disable the default transition from one fragment to another, how can I achieve this? I already disabled that you can swipe between the fragments, you have to click a button to get to the next fragment, but there is still somehow a swiping transition after clicking the button. I searched for this but there was never an answer that would fit my problem. Here is one fragment example:
public class FragmentQuestion1 extends Fragment {
private Button btnNavFrag1;
private EditText editText;
private ProgressBar m_bar;
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_question_1, container, false);
btnNavFrag1 = view.findViewById(R.id.btn_question1);
editText = view.findViewById(R.id.edit_text_question_1);
editText.addTextChangedListener(new NumberTextWatcher(editText));
m_bar = view.findViewById(R.id.progress_bar_question_1);
btnNavFrag1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
((GameActivity)getActivity()).setViewPager(2);
}
});
return view;
}
// Method that is used so the countdown starts when the user gets to this fragment
#Override
public void setMenuVisibility(final boolean visible) {
super.setMenuVisibility(visible);
if (visible) {
startCountdownTimer();
}
}
// Countdown 17 seconds
int i = 0;
private void startCountdownTimer() {
m_bar.setProgress(i);
final int totalMsecs = 17 * 1000; // 17 seconds in milli seconds
int callInterval = 100;
/** CountDownTimer */
new CountDownTimer(totalMsecs, callInterval) {
public void onTick(long millisUntilFinished) {
int secondsRemaining = (int) millisUntilFinished / 1000;
float fraction = millisUntilFinished / (float) totalMsecs;
// progress bar is based on scale of 1 to 100;
m_bar.setProgress((int) (fraction * 100));
}
public void onFinish() {
}
}.start();
}

Because you are using a viewPager, you could use a library like this which lets you add a transformer (some sort of effect) to the viewPager when going to the next fragment. I'd recommend the ZoomOutTranformer for your use-case. If the transition is not what you expect you can always extend from that class and override the transition so it's more to your liking.
ViewPagerTransformers are native, so you don't need to use a library. Just create a class, implement the PageTransformer interface and override the method transformPage.

In your layout xml define a tablayout and a FrameLayout like this:
..................your xml code...............
.............................................................
<com.google.android.material.tabs.TabLayout
android:id="#+id/simpleTabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabBackground="#color/colorPrimary"
app:tabIndicatorColor="#0080FF"
app:tabSelectedTextColor="#050505"
app:tabTextColor="#color/colorAccent">
<com.google.android.material.tabs.TabItem
android:id="#+id/abcd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Item 1" />
<com.google.android.material.tabs.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="item 2" />
<com.google.android.material.tabs.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="item 3" />
</com.google.android.material.tabs.TabLayout>
<FrameLayout
android:id="#+id/simpleFrameLayout"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
This layout is defined for three tabs. You can make it for more tabs by adding more tabs if you like.
Then define the fragments for each tab. In this case:
item_one_fragment:
<?xml version="1.0" encoding="utf-8"?>
<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"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="your.activity.context">
......................................
............................................
fragments xml
.............................
,.....................................
</RelativeLayout>
Similarly item 2 and item 3 fragment layouts.
Then define the fragments in java:
public class FirstItemFragment extends Fragment {
public ListView CallListView;
public FirstFragment() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final View view = inflater.inflate(R.layout.item_one_fragment, container, false);
// Inflate the layout for this fragment
return view;
}
}
Simiarly second and third fragment.
Then in your Main Activity:
FrameLayout simpleFrameLayout = (FrameLayout) findViewById(R.id.simpleFrameLayout);
TabLayout tabLayout = (TabLayout) findViewById(R.id.simpleTabLayout);
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.simpleFrameLayout, new FirstItemFragment());
ft.commit();
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override
public void onTabSelected(TabLayout.Tab tab) {
// get the current selected tab's position and replace the fragment accordingly
Fragment fragment = null;
switch (tab.getPosition()) {
case 0:
fragment = new FirstItemFragment();
break;
case 1:
fragment = new SecondItemFragment();
break;
case 2:
fragment = new ThirdItemFragment();
break;
}
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.simpleFrameLayout, fragment)
.addToBackStack(null)
//Commit the transaction.
.commit();
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
Now when you run your activity you will have three tabs and when you click on any one you will go to the respective fragment without any swipe

Android "No view found for id for fragment"

Okay. I am stuck and having a headache... I am not sure how to access the other layout's view, since inflating does not work.
Here are my codes.
WriteRouteActivity.java
public class WriteRouteActivity extends AppCompatActivity {
private Toolbar tb;
private TextView txt_toolbar_title;
private Button btnSearchPlaces;
private LinearLayout parentLayout, placesCoverLayout;
private View popupView;
private ImageView imgShowPlaces;
private boolean isKeyBoardVisible;
private int keyboardHeight;
private EditText edtSearchPlaces;
private PopupWindow popupWindow;
//popupView
private TabLayout tabLayout;
private FrameLayout frameLayout;
//prework
private int minusVal;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_write_route);
initView();
}
private void initView() {
//for activity and native back button
tb = (Toolbar) findViewById(R.id.nav_toolbar);
setSupportActionBar(tb);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowTitleEnabled(false);
txt_toolbar_title = (TextView) findViewById(R.id.txt_toolbar);
parentLayout = (LinearLayout) findViewById(R.id.layout_parent);
placesCoverLayout = (LinearLayout) findViewById(R.id.footer_for_places);
imgShowPlaces = (ImageView) findViewById(R.id.img_show_places);
edtSearchPlaces =(EditText) findViewById(R.id.edt_search_place);
btnSearchPlaces = (Button) findViewById(R.id.btn_search_place);
popupView = getLayoutInflater().inflate(R.layout.places_popup, null);
tabLayout = (TabLayout) popupView.findViewById(R.id.tab_layout);
frameLayout = (FrameLayout) popupView.findViewById(R.id.frame_layout);
doWorkForLayotus();
}
private void doWorkForLayotus(){
final float popUpheight = getResources().getDimension(R.dimen.keyboard_height);
changeKeyboardHeight((int) popUpheight);
enablePopUpView();
setTabLayout();
checkKeyboardHeight(parentLayout);
enableFooterView();
}
public void setCurrentTabFragment(int position) throws IllegalAccessException, InstantiationException {
String tag="";
Fragment fr = null;
Class frClass = null;
FragmentManager frManager = getSupportFragmentManager();
switch (position) {
case 0:
tag = "first";
//hide
if(frManager.findFragmentByTag("second")!=null){
frManager.beginTransaction().hide(frManager.findFragmentByTag("second")).commit();
}
if(frManager.findFragmentByTag("third")!=null){
frManager.beginTransaction().hide(frManager.findFragmentByTag("third")).commit();
}
if(frManager.findFragmentByTag("fourth")!=null){
frManager.beginTransaction().hide(frManager.findFragmentByTag("fourth")).commit();
}
//show
if(frManager.findFragmentByTag("first")!=null){
frManager.beginTransaction().show(frManager.findFragmentByTag("first")).commit();
}else{ //add
try {
frManager.beginTransaction().add(frameLayout.getId(), ((Fragment) Fragment_zasin.class.newInstance()), tag).commit();
}catch(Exception e){
Log.e("why", e.getMessage().toString());
}
}
break;
case 1:
tag = "second";
//hide
if(frManager.findFragmentByTag("first")!=null){
frManager.beginTransaction().hide(frManager.findFragmentByTag("first")).commit();
}
if(frManager.findFragmentByTag("third")!=null){
frManager.beginTransaction().hide(frManager.findFragmentByTag("third")).commit();
}
if(frManager.findFragmentByTag("fourth")!=null){
frManager.beginTransaction().hide(frManager.findFragmentByTag("fourth")).commit();
}
//show
if(frManager.findFragmentByTag("second")!=null){
frManager.beginTransaction().show(frManager.findFragmentByTag("second")).commit();
}else{ //add
frManager.beginTransaction().add(frameLayout.getId(), ((Fragment) Fragment_zasin.class.newInstance()), tag).commit();
}
break;
case 2:
tag = "third";
//hide
if(frManager.findFragmentByTag("first")!=null){
frManager.beginTransaction().hide(frManager.findFragmentByTag("first")).commit();
}
if(frManager.findFragmentByTag("second")!=null){
frManager.beginTransaction().hide(frManager.findFragmentByTag("second")).commit();
}
if(frManager.findFragmentByTag("fourth")!=null){
frManager.beginTransaction().hide(frManager.findFragmentByTag("fourth")).commit();
}
//show
if(frManager.findFragmentByTag("third")!=null){
frManager.beginTransaction().show(frManager.findFragmentByTag("third")).commit();
}else{ //add
frManager.beginTransaction().add(frameLayout.getId(), ((Fragment) Fragment_zasin.class.newInstance()), tag).commit();
}
break;
case 3:
tag = "fourth";
//hide
if(frManager.findFragmentByTag("first")!=null){
frManager.beginTransaction().hide(frManager.findFragmentByTag("first")).commit();
}
if(frManager.findFragmentByTag("second")!=null){
frManager.beginTransaction().hide(frManager.findFragmentByTag("second")).commit();
}
if(frManager.findFramentByTag("third")!=null){
frManager.beginTransaction().hide(frManager.findFragmentByTag("third")).commit();
}
//show
if(frManager.findFragmentByTag("fourth")!=null){
frManager.beginTransaction().show(frManager.findFragmentByTag("fourth")).commit();
}else{ //add
frManager.beginTransaction().add(R.id.frame_layout, ((Fragment) Fragment_zasin.class.newInstance()), tag).commit();
}
break;
}
//frManager.beginTransaction().replace(R.id.frame_container, fr, tag).setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN).commit();
}
private void setTabLayout(){
tabLayout.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override
public void onTabSelected(TabLayout.Tab tab) {
try {
setCurrentTabFragment(tab.getPosition());
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
}
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
}
private void enablePopUpView() {
// Creating a pop window for emoticons keyboard
popupWindow = new PopupWindow(popupView, ViewGroup.LayoutParams.MATCH_PARENT,
(int) keyboardHeight, false);
popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {
#Override
public void onDismiss() {
placesCoverLayout.setVisibility(LinearLayout.GONE);
}
});
}
int previousHeightDiffrence = 0;
private void checkKeyboardHeight(final View parentLayout) {
parentLayout.getViewTreeObserver().addOnGlobalLayoutListener(
new ViewTreeObserver.OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
Rect r = new Rect();
parentLayout.getWindowVisibleDisplayFrame(r);
int screenHeight = parentLayout.getRootView()
.getHeight();
minusVal=screenHeight-r.bottom;
int heightDifference = screenHeight - (r.bottom+(minusVal));
if (previousHeightDiffrence - heightDifference > 50) {
popupWindow.dismiss();
}
previousHeightDiffrence = heightDifference;
if (heightDifference > 100) {
isKeyBoardVisible = true;
changeKeyboardHeight(heightDifference);
} else {
isKeyBoardVisible = false;
}
}
});
}
private void changeKeyboardHeight(int height) {
if (height > 100) {
keyboardHeight = height;
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT, keyboardHeight);
placesCoverLayout.setLayoutParams(params);
}
}
private void enableFooterView() {
edtSearchPlaces.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (popupWindow.isShowing()) {
popupWindow.dismiss();
}
}
});
btnSearchPlaces.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
hideSoftKeyboard(WriteRouteActivity.this);
if(!popupWindow.isShowing()){
popupWindow.setHeight((int) (keyboardHeight));
if (isKeyBoardVisible) {
placesCoverLayout.setVisibility(LinearLayout.GONE);
} else {
placesCoverLayout.setVisibility(LinearLayout.VISIBLE);
}
popupWindow.setSoftInputMode(PopupWindow.INPUT_METHOD_NEEDED);
popupWindow.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
popupWindow.showAtLocation(parentLayout, Gravity.BOTTOM, 0, 0);
try {
setCurrentTabFragment(0);
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InstantiationException e) {
e.printStackTrace();
}
} else {
//popupWindow.dismiss();
}
}
});
}
#Override
protected void onDestroy() {
popupWindow.dismiss();
super.onDestroy();
}
public static void hideSoftKeyboard(Activity activity) {
InputMethodManager inputMethodManager =
(InputMethodManager) activity.getSystemService(
Activity.INPUT_METHOD_SERVICE);
inputMethodManager.hideSoftInputFromWindow(
activity.getCurrentFocus().getWindowToken(), 0);
}
#Override
public void onBackPressed() {
if(popupWindow.isShowing()){
popupWindow.dismiss();
}else {
super.onBackPressed();
}
}
}
activity_write_wroute.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/layout_parent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<include layout="#layout/nav_toolbar" />
<fragment
android:id="#+id/google_map"
class="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<include
android:id="#+id/footer_layout"
layout="#layout/footer_edittext"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:id="#+id/footer_for_places"
android:layout_width="match_parent"
android:layout_height="#dimen/keyboard_height"
android:background="#android:color/transparent"
android:orientation="vertical"
android:visibility="gone" />
</LinearLayout>
Fragment_Zasin
public class Fragment_zasin extends Fragment {
public Fragment_zasin newInstance() {
Fragment_zasin fr = new Fragment_zasin();
return fr;
}
public Fragment_zasin() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_zasin, container, false);
return rootView;
}
}
places_popup.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/linear_layout_top"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#fff"
android:orientation="vertical">
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="fill_parent"
android:layout_height="?attr/actionBarSize"
android:background="#ffffff"
app:tabGravity="fill"
app:tabIndicatorColor="#color/colorPrimary"
app:tabIndicatorHeight="4dp"
app:tabMode="fixed"
app:tabSelectedTextColor="#color/colorPrimary">
<android.support.design.widget.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:icon="#drawable/tab_pin_selector"
android:text="11">
</android.support.design.widget.TabItem>
<android.support.design.widget.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:icon="#drawable/tab_mainroute_selector"
android:text="22" />
<android.support.design.widget.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:icon="#drawable/tab_talk_selector"
android:text="33" />
<android.support.design.widget.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:icon="#drawable/tab_my_selector"
android:text="44" />
</android.support.design.widget.TabLayout>
<FrameLayout
android:id="#+id/frame_layout"
android:layout_width="match_parent"
android:layout_height="0px"
android:layout_weight="1" />
</LinearLayout>
LOGCAT Message
FATAL EXCEPTION: main Process: suacuration.itgotravel, PID: 20131
java.lang.IllegalArgumentException: No view found for id 0x7f100173 for fragment Fragment_zasin{d4ac39c #0 id=0x7f100173 first}
Can somebody help this?

This error occurs because the fragment manager could not find the view on which it has to inflate the fragment.
The fragment transaction is linked to the activity so this error occurs as the frame layout is not a part of that main activity's xml.so it cant find where to add the fragment.fragment has to be added inside the activity.
what you have to do is provide the id of a view in your main activity.
for e.g your main view
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/layout_parent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/mainView"//like this
android:orientation="vertical">
<include layout="#layout/nav_toolbar" />
<fragment
android:id="#+id/google_map"
class="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<include
android:id="#+id/footer_layout"
layout="#layout/footer_edittext"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:id="#+id/footer_for_places"
android:layout_width="match_parent"
android:layout_height="#dimen/keyboard_height"
android:background="#android:color/transparent"
android:orientation="vertical"
android:visibility="gone" />
</LinearLayout>
The view where you are trying to inflate the fragemnt must be inside activity.
Now when you try
frManager.beginTransaction().add(R.id.mainView, ((Fragment) Fragment_zasin.class.newInstance()), tag).commit();
the fragment will be loaded on this view of your activity.

Problem is you are trying to show a Fragment on a View which is not defined in your layout which you have defined in your onCreate() while setContentView(layoutId)
In your case you are inflating fragments in WriteRouteActivity where layout defined is activity_write_route and fragments are added on FrameLayout which is defined in places_popup.xml so define your framelayout in a view layout of Activity.
Small Description :
--------code------
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
-------layout define for activity-------
setContentView(R.layout.activity_write_route);
}
now where you are adding fragment on a FrameLayout(view)
frManager.beginTransaction().add(R.id.frame_layout, ((Fragment) Fragment_zasin.class.newInstance()), tag).commit();
here R.id.frame_layout should be define in your layout activity_write_route.

Okay i found an answer.
The problem was that fragment cannot be a child of a 'Dialog'.
Since i used popup dialog, it was unable to put fragments inside the dialog.
i solved by inflating views rather than using fragments in tablayout.

There could be other errors but what is this?
tb = (Toolbar) findViewById(R.id.nav_toolbar);
This is not a toolbar:
<include layout="#layout/nav_toolbar" />
Can we see inside this nav_toolbar layout?
Also, where is this: "R.layout.fragment_zasin". It's complaining about a Fragment so it would be worthwhile seeing if this is ok.
Anyway, as a general troubleshooting strategy, try commenting out all those lines in the initView() method and just add them in one at a time until it fails. Or maybe if you scroll down in the error logs further it will give you a hyperlink to the line that's causing it to fail.
Why do you have "frameLayout.getId()" on one line but "R.id.frame_layout" on another? Try to use the latter for all of the lines and see if that's it.

I was extending the wrong type of activity, extended AppCompact solved issue.

Got this error when starting new fragment from fragment, using ChildFragmentManager, and giving id of container from activity, in transaction replace method.
It happens that FragmentManager has access to activity containers, but ChildFragmentManager has access to fragment containers.
The solution was to use FragmentManager class instead of ChildFragmentManager.

You got this error because your view found for id 0x7f100173 into fragment Fragment_zasin so only solution is that:
1) check all id present to that particular layout.
2) if all id is present to that particular layout and still you facing same issue do one thing change name of id don't refactor change name and access this changed id name in your fragment or activity.

Get edittext value from fragment

I am using fragments,I have an edittext in fragment and I want to get value in main activity.
This is my fragment layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#878787" >
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="dfgdfgdf"
android:textSize="20dp"
android:layout_centerInParent="true"
android:id="#+id/user_name"/>
<EditText
android:id="#+id/message"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<Button
android:text="Gönder"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:onClick="getFromUser"
android:layout_marginTop="40dp"
/>
</RelativeLayout>
I am loading fragment with this function:
public void startChat(JsonObject user) {
FrameLayout layout = (FrameLayout)findViewById(R.id.container);
layout.setVisibility(View.VISIBLE);
Bundle bundle = new Bundle();
bundle.putString("name", user.get("name").getAsString());
sendTo=user.get("username").getAsString();
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
ConversationFragment conv = new ConversationFragment();
conv.setArguments(bundle);
fragmentTransaction.add(R.id.container, conv);
fragmentTransaction.commit();
viewPager.setVisibility(View.GONE);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
actionBar.setDisplayHomeAsUpEnabled(true);
}
And this is my fragment class
public class ConversationFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
String name = getArguments().getString("name");
View rootView = inflater.inflate(R.layout.fragment_conversation, container, false);
TextView username=(TextView)rootView.findViewById(R.id.user_name);
username.setText(name);
return rootView;
}
}
As you can see when press the button main activity runs "getFromUser" function.I want to get edittext value in this function.How can I do this ?

It's always the same procedure for these things. You can't access a fragment's views just like that. You need a callback method.
Add this code to ConversationFragment:
private OnGetFromUserClickListener mListener;
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mListener = (OnGetFromUserClickListener ) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString() + " must implement OnGetFromUserClickListener");
}
}
public void getFromUser(View v) {
if (mListener != null) {
EditText edit = (EditText)findViewById(R.id.message);
mListener.getFromUser(edit.getText().toString());
}
}
public interface OnGetFromUserClickListener {
void getFromUser(String message);
}
Make your MainActivity implement this interface. Replace getFromUser() inside MainActivity with:
public void getFromUser(String message) {
sendMessage(message);
}
Done.
Edit:
Actually, using the XML-onClick attribute is currently bugged (see onClick inside fragment called on Activity): It links to the activity instead of the fragment. You have to set the click listener programmatically to make sure the code won't break at some point in the future. So give the button an ID inside the XML (e.g. get_from_user) and add this code to onCreateView inside ConversationFragment:
v.findViewById(R.id.get_from_user).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (v.getId() == R.id.get_from_user) {
getFromUser(v);
}
}
});
Using this code vastly decouples the activity and the fragment from each other.

I resolved this problem.
public void getFromUser(View view) {
ConversationFragment fragment1 = (ConversationFragment)getSupportFragmentManager().findFragmentById(R.id.container);
View frag=fragment1.getView();
EditText editText1 =(EditText) frag.findViewById(R.id.message);
String message=editText1.getText().toString();
sendMessage(message);
}
Now I can get edittext value from fragment.

Adding a button in an activity within fragments with Actionbarsherlock inside the fragment

So I want to have 3 buttons that always appear throughout fragments. I've got an activity with 3 buttons and a fragment layout that contains a fragment with actionbarsherlock inside. The problem is, the buttons in the activity are not clickable and nothing can be executed in the OnClickListener; but the buttons run just fine if I replace the fragment containing actionbarsherlock with a regular fragment without actionbarsherlock inside. I wonder what's wrong.
Here is my code.
activity_main.xml:
<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:paddingBottom="2dp"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<FrameLayout
android:id="#+id/fragment_content"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="#+id/button1" />
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/fragment_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="10dp"
android:text="mission" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/button1"
android:layout_alignBottom="#+id/button1"
android:layout_centerHorizontal="true"
android:text="feed" />
<Button
android:id="#+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/button2"
android:layout_alignBottom="#+id/button2"
android:layout_alignRight="#+id/fragment_content"
android:text="Profile" />
</RelativeLayout>
MyActivity.java:
public class MyActivity extends SherlockFragmentActivity {
/**
* Called when the activity is first created.
*/
Fragment frg;
ActionBarFragment b;
Button btnmission;
Button btnfeed;
Button btnprofile;
boolean small;
static int previousItem;
int tabname;
private Fragment mVisible = null;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
previousItem=1;
btnmission = (Button) findViewById(R.id.button1);
btnfeed = (Button) findViewById(R.id.button2);
btnprofile = (Button) findViewById(R.id.button3);
btnmission.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Log.i("clicked", "button");
if(previousItem!=1){
Intent intent=new Intent(getBaseContext(),MyActivity.class);
startActivity(intent);
}
previousItem=1;
}
});
btnfeed.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
if(previousItem!=2){
Intent intent=new Intent(getBaseContext(),MissionFragment.class);
intent.putExtra("class", "Feed");
startActivity(intent);
}
previousItem=2;
}
});
btnprofile.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
}
});
private void setupFragments() {
final FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
frg = (ActionBarFragment) getSupportFragmentManager().findFragmentById(R.id.fragment_content);
if (frg == null) {
frg = new ActionBarFragment();
ft.add(R.id.fragment_content, frg);
}
ft.hide(frg);
ft.commit();
}
private void showFragment(Fragment fragmentIn) {
if (fragmentIn == null) return;
final FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.setCustomAnimations(android.R.anim.fade_in, android.R.anim.fade_out);
if (mVisible != null) ft.hide(mVisible);
ft.show(fragmentIn).commit();
mVisible = fragmentIn;
}
It adds a fragment to the activity and actionbar inside the fragment.
ActionBarFragment.java:
public class ActionBarFragment extends SherlockFragment {
int tabname;
#Override
public void onStart()
{
// TODO Auto-generated method stub
super.onStart();
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.empty_view, container, false);
// Getting an instance of action bar
ActionBar actionBar = this.getSherlockActivity().getSupportActionBar();
// Enabling Tab Navigation mode for this action bar
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Enabling Title
actionBar.setDisplayShowTitleEnabled(true);
// Creating Android Tab
Tab tab1 = actionBar.newTab()
.setText("Nova Missoes")
.setTabListener(new CustomTabListener<ListMission>(this.getSherlockActivity(), "mission list", ListMission.class));
// Adding Android Tab to action bar
actionBar.addTab(tab1);
// Creating Apple Tab
Tab tab2 = actionBar.newTab()
.setText("Missoes Concluidas")
.setTabListener(new CustomTabListener<MissionAccomplished>(this.getSherlockActivity(), "mission accomplished", MissionAccomplished.class));
// Adding Apple Tab to action bar
actionBar.addTab(tab2);
Intent in=getSherlockActivity().getIntent();
tabname=in.getIntExtra("tabname", 0);
Log.i("intent", Integer.toString(tabname));
if(tabname==2){
actionBar.selectTab(tab2);
}
// Orientation Change Occurred
if(savedInstanceState!=null){
int currentTabIndex = savedInstanceState.getInt("tab_index");
actionBar.setSelectedNavigationItem(currentTabIndex);
}
return view;
}
#Override
public void onSaveInstanceState(Bundle outState) {
int currentTabIndex = getSherlockActivity().getSupportActionBar().getSelectedNavigationIndex();
outState.putInt("tab_index", currentTabIndex);
super.onSaveInstanceState(outState);
}
}
No problem with displaying the buttons and the tabs, it's just that the OnClickListener is not called when the program runs.

Honeycomb: Several fragments in each Tab in Action Bar

I'm quite new to android and java and I want to implement the following functions in action Bar:
TAB 1 : Displays ListFragment A and Listfragment B
TAB 2 : Displays ListFragment C and Listfragment D
I already made the code to display a view with ListFragment A and Listfragment B but without action Bar. I'm trying to integrate action bar with tabs and now it is not working and I'm not able to figure out what is wrong or find a post with a solution.
I'm using an activity for each Fragment.
At the moment, I can display one fragment in each tab with the action bar :
fragment A appears when I click in Tab 1
Fragment C appears when I click in Tab 2
My Problem is:
When I click on an item in Fragment A, Fragment B appears in a new View ( = without either action bar nor fragment A)
=> How should I do to display in the same view : Action Bar, Fragment A and Fragment B?
=> I don't understand really how I should configure action bar to appear on top of each view. Is it done in a separate xml? How is it configured? Should we call action bar on top of each activity?
=> I don't understand really why I need 4 levels of xml to display these fragments.
For my code, I used several tutorials from following links but now I'm not able to find an answer:
http://mobile.tutsplus.com/tutorials/android/android-sdk_fragments/
Adding tabs from http://www.devdiv.com/android/docs/guide/topics/ui/actionbar.html
dgn2_action_bar.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout android:layout_height="wrap_content"
android:layout_width="match_parent"
android:id="#+id/fragment_place">
</LinearLayout>
</LinearLayout>
dgn2_synth_entry.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<fragment
android:id="#+id/listFragment"
android:layout_width="150dip"
android:layout_height="match_parent"
android:layout_weight="1"
android:layout_marginTop="?android:attr/actionBarSize"
class="com.android.FragmentA" >
</fragment>
<fragment
android:id="#+id/detailSynthFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2"
class="com.android.FragmentB" >
<!-- Preview: layout=#layout/details -->
</fragment>
</LinearLayout>
dgn2_synth_detail_layout.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" >
<fragment
android:id="#+id/detailSynthFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.android.FragmentB" />
</LinearLayout>
dgn2_details.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" >
<ListView
android:id="#+id/resultFragmentView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:divider="#ffffff"
/>
</LinearLayout>
Dgn2EntryActivity.java
public class Dgn2EntryActivity extends Activity implements Dgn2SynthListFragment.OnSheetSelectedListener
{
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dgn2_action_bar);
/* Setup Action Bar for tabs */
ActionBar mActionBar = getActionBar();
mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
/* add a new tab and set its title text */
ActionBar.Tab tabSynthesis = mActionBar.newTab().setText(R.string.sSynthesisTab);
ActionBar.Tab tabParameter = mActionBar.newTab().setText(R.string.sParameterTab);
/* instantiate fragment for the tab */
ListFragment mSynthesisFragment = new FragmentA();
ListFragment mParamFragment = new FragmentC();
/* Set Listener on Tab Action */
tabSynthesis.setTabListener(new MyTabsListener(mSynthesisFragment));
tabParameter.setTabListener(new MyTabsListener(mParamFragment));
/* Add Tab in Action Bar */
mActionBar.addTab(tabSynthesis);
mActionBar.addTab(tabParameter);
}
public void onSheetSelected(String sheetID, FragmentB viewer)
{
if (viewer == null || !viewer.isInLayout())
{
/*initialise Fragment call */
Intent intent = new Intent(getApplicationContext(),FragmentBActivity.class);
intent.putExtra("value", sheetID);
startActivity(intent);
}
else
{
/* Update Fragment content after a click */
viewer.updateSheet(sheetID);
}
}
protected class MyTabsListener implements ActionBar.TabListener
{
private ListFragment mFragment;
public MyTabsListener(ListFragment mFragment)
{
this.mFragment = mFragment;
}
public void onTabSelected(Tab paramTab,
FragmentTransaction paramFragment)
{
paramFragment.add(R.id.fragment_place, mFragment, null);
}
public void onTabUnselected(Tab paramTab,
FragmentTransaction paramFragment)
{
paramFragment.remove(mFragment);
}
public void onTabReselected(Tab paramTab,
FragmentTransaction paramFragment)
{
}
}
}
FragmentBActivity.java
public class FragmentBActivity extends Activity
{
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.dgn2_synth_detail_layout);
/* get Sheet Label */
Bundle extras = getIntent().getExtras();
if (extras != null)
{
String sheetLabel = extras.getString("value");
FragmentB viewer = (FragmentB) getFragmentManager()
.findFragmentById(R.id.detailSynthFragment);
/*Update Fragment Viewer view content*/
viewer.updateSheet(sheetLabel);
}
}
}
FragmentA.java
public class FragmentA extends ListFragment
{
private OnSheetSelectedListener sheetSelectedListener;
public interface OnSheetSelectedListener
{
public void onSheetSelected(String sheetID, FragmentB viewer);
}
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
}
#Override
public void onActivityCreated(Bundle savedInstanceState)
{
super.onActivityCreated(savedInstanceState);
String[] values = new String[] { GLOBAL_SYNTHESIS_LABEL, SYNTHESIS1_LABEL};
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),
android.R.layout.simple_list_item_1, values);
setListAdapter(adapter);
}
#Override
public void onListItemClick(ListView l, View v, int position, long id)
{
String item = (String) getListAdapter().getItem(position);
FragmentB viewer = (FragmentB) getFragmentManager().findFragmentById(R.id.detailFragment);
sheetSelectedListener.onSheetSelected(item, viewer);
}
}
FragmentB.java
public class FragmentB extends ListFragment
{
Context mContext;
Dgn1DataListClass allResults = new Dgn1DataListClass();
String[] vIhmDgnVarNameList;
Dgn1ResultCouple[] results;
#Override
public void onActivityCreated(Bundle savedInstanceState)
{
super.onActivityCreated(savedInstanceState);
updateSheet(GLOBAL_SYNTHESIS_LABEL);
}
public void updateSheet(String sheetLabel)
{
mContext = getActivity();
ListView resultListView =(ListView)getView().findViewById(R.id.resultFragmentView);
if (sheetLabel == GLOBAL_SYNTHESIS_LABEL)
{
/* Displays A list in 2 columns */
vIhmDgnVarNameList = getResources().getStringArray(R.array.ihm_dgn_row1_array);
results = allResults.fillResults(vIhmDgnVarNameList);
ListItemAdapter2 mcqListAdapter = new ListItemAdapter2(mContext,R.layout.ihm_dgn_row_data,results);
setListAdapter(mcqListAdapter);
}
else if (sheetLabel == SYNTHESIS1_LABEL)
{
/* TODO */
}
}
public class ListItemAdapter2 extends ArrayAdapter<Dgn1ResultCouple>
{
/* Lot Of Code working*/
}
}
Thanks for your help