Above is the path I follow until I reach the BeginnerFragment.
Above is the hierarchy of activity / fragments
Current Situation
In my application I have a Bottom Navigation, and in each fragment of the navigation, I have two tabs.
The Problem
My problem is that when I'm at BeginnerFragment and I press the cell back button, it returns to the StatusFragment.
I expected it to return to EducationHomeFragment, as I added it to BackStack, according to the codes below.
EducationFragment
public class EducationFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View root = inflater.inflate(R.layout.fragment_education, container, false);
// Instanciando o Fragmento de página inicial da Educação
EducationHomeFragment educationHomeFragment = new EducationHomeFragment();
getActivity().getSupportFragmentManager().beginTransaction()
.add(R.id.fragment_container, educationHomeFragment).addToBackStack(null).commit();
return root;
}
}
fragment_education
<?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"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/fragment_container"
tools:context=".education.EducationFragment"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
EducationHomeFragment
public class EducationHomeFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View root = inflater.inflate(R.layout.fragment_education_home, container, false);
CardView beginnerFreelance = root.findViewById(R.id.cardview_beginner_skills);
beginnerFreelance.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
BeginnerFragment fragment = new BeginnerFragment();
getActivity().getSupportFragmentManager().beginTransaction()
.replace(R.id.fragment_container , fragment)
.addToBackStack(null)
.commit();
}
});
return root;
}
}
fragment_education_home
<androidx.constraintlayout.widget.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:id="#+id/fragment_education_home_container"
tools:context=".education.EducationHomeFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#EEE"
>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/text_academic_education"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="12dp"
android:text="#string/academic_education"
android:textColor="#color/colorPrimaryDark"
app:fontFamily="#font/exo_2_semibold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/cardview_advanced_skills" />
<TextView
android:id="#+id/title_courses_available"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="12dp"
android:text="#string/general_courses"
android:textColor="#color/colorPrimaryDark"
app:fontFamily="#font/exo_2_semibold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/cardview_qualifications" />
<androidx.cardview.widget.CardView
android:id="#+id/cardview_doctoral_courses"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_marginLeft="#dimen/default_cardview_mgsides"
android:layout_marginTop="#dimen/cardview_list_margin"
android:layout_marginRight="#dimen/default_cardview_mgsides"
android:layout_marginBottom="20dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/cardview_master_courses">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textView39"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/doctoral_courses"
app:fontFamily="#font/exo_2"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
<androidx.cardview.widget.CardView
android:id="#+id/cardview_master_courses"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_marginLeft="#dimen/default_cardview_mgsides"
android:layout_marginTop="#dimen/cardview_list_margin"
android:layout_marginRight="#dimen/default_cardview_mgsides"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/cardview_specialization_courses">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textView38"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/master_courses"
app:fontFamily="#font/exo_2"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
<androidx.cardview.widget.CardView
android:id="#+id/cardview_specialization_courses"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_marginLeft="#dimen/default_cardview_mgsides"
android:layout_marginTop="#dimen/cardview_list_margin"
android:layout_marginRight="#dimen/default_cardview_mgsides"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/cardview_higher_courses">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/text_doctoral_courses"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/specialization_courses"
app:fontFamily="#font/exo_2"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
<androidx.cardview.widget.CardView
android:id="#+id/cardview_higher_courses"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_marginLeft="#dimen/default_cardview_mgsides"
android:layout_marginTop="#dimen/cardview_list_margin"
android:layout_marginRight="#dimen/default_cardview_mgsides"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/text_academic_education">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/text_master_courses"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/higher_level_courses"
app:fontFamily="#font/exo_2"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
<androidx.cardview.widget.CardView
android:id="#+id/cardview_advanced_skills"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_marginLeft="#dimen/default_cardview_mgsides"
android:layout_marginTop="#dimen/cardview_list_margin"
android:layout_marginRight="#dimen/default_cardview_mgsides"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/cardview_intermediate_skills">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/text_specialization_courses"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/advanced"
app:fontFamily="#font/exo_2"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
<androidx.cardview.widget.CardView
android:id="#+id/cardview_study_status"
android:layout_width="match_parent"
android:layout_height="85dp"
android:layout_marginLeft="#dimen/default_cardview_mgsides"
android:layout_marginTop="#dimen/default_cardview_mgtop"
android:layout_marginRight="#dimen/default_cardview_mgsides"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/image_study_status"
android:layout_width="35dp"
android:layout_height="35dp"
android:layout_marginTop="10dp"
android:tint="#color/colorPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/outline_menu_book_24" />
<TextView
android:id="#+id/text_study_status"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:text="#string/not_studying"
android:textColor="#color/colorPrimaryDark"
app:fontFamily="#font/exo_2_semibold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/image_study_status" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
<androidx.cardview.widget.CardView
android:id="#+id/cardview_qualifications"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="#dimen/default_cardview_mgsides"
android:layout_marginTop="#dimen/default_cardview_mgtop"
android:layout_marginRight="#dimen/default_cardview_mgsides"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/cardview_study_status">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="12dp"
android:paddingBottom="12dp">
<TextView
android:id="#+id/title_obtained_qualifications"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/qualifications_obtained"
android:textColor="#color/colorPrimaryDark"
app:fontFamily="#font/exo_2_semibold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/obtained_qualification_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="5dp"
android:text="#string/no_course_completed"
app:fontFamily="#font/exo_2"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/title_obtained_qualifications" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
<androidx.cardview.widget.CardView
android:id="#+id/cardview_beginner_skills"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_marginLeft="#dimen/default_cardview_mgsides"
android:layout_marginTop="#dimen/cardview_list_margin"
android:layout_marginRight="#dimen/default_cardview_mgsides"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/title_courses_available">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/text_basic_courses"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/beginner"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
<androidx.cardview.widget.CardView
android:id="#+id/cardview_intermediate_skills"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_marginLeft="#dimen/default_cardview_mgsides"
android:layout_marginTop="#dimen/cardview_list_margin"
android:layout_marginRight="#dimen/default_cardview_mgsides"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/cardview_beginner_skills">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/text_higher_courses"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/intermediate"
app:fontFamily="#font/exo_2"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
Why isn't FragmentEducationHome being added to the stack? I want to return to FragmentEducationHome when I click on the BeginnerFragment back button.
This is not a direct answer to the question.
But Google suggests to use Jetpack Navigation approach.
Which will be single Activity and multiple fragments.
Google Code Labs Link
This avoids lot of bipolarate code , were we had to handle backstack, keeping fragment count etc...
At first anyone will feel bit difficult to start with, but in a while , you can grasp and move on to new approach which is suggestible.
Nav_graph avoids programmers responsibility to add/ remove fragments
Allows passing data (raw data or data classes with Parcelable) from one fragment to another
Moving from one child nav graph to another
And much more...
I would suggest you do checkout this once starting with a new trial/project
EDIT
Even though one activity is suggested, we may have more than one Activity and its corresponding child fragment graphs if required. This purely depends on the requirement. In my last project we started with single activity concept. But as the app complexity increased, it was decided to move for two activity and its corresponding child frags.
With respect to Clean Code Architecture this is easily adaptable as well...
Good luck!
Please refer to this question:
Override onBackPressed() into your activity and call this in order to remove current fragment from backstack, since you add it.
if (getSupportFragmentManager().getBackStackEntryCount() > 0) {
getSupportFragmentManager().popBackStackImmediate()
} else {
finish();
}
Make sure R.id.fragment_container lives in the parent activity xml (not the fragment xml) and in EducationHomeFragment use .add instead of .replace to add BeginnerFragment to the back stack
You already replace current container fragment by BeginnerFragment, so you can't back to previous fragment. Try to use add(id, fragment, tag) and addToBackStack(tag). Hope help you.
Related
I have a bookmark button in the action bar which is not clickable when I open a bottom sheet by clicking a button (the button is in fragment).
Here is the code :
activity_learn.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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=".learn.LearnActivity">
<androidx.viewpager2.widget.ViewPager2
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
mcq_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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"
android:background="#color/light_cyan">
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.appcompat.widget.AppCompatImageView
android:id="#+id/ic_close"
style="#style/ic_close"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="#drawable/ic_close"
tools:targetApi="lollipop" />
<ProgressBar
android:id="#+id/determinateBar"
style="#style/progressBar"
app:layout_constraintEnd_toStartOf="#+id/cardNumber"
app:layout_constraintStart_toEndOf="#+id/ic_close"
app:layout_constraintTop_toTopOf="parent" />
......more code ......
<com.adithya.memoneet.utils.FButton
android:id="#+id/check_button"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginStart="20dp"
android:layout_marginTop="20dp"
android:layout_marginEnd="20dp"
android:fontFamily="#font/quando"
android:text="Check"
android:textColor="#color/white"
android:textSize="20sp"
android:textStyle="bold"
app:buttonColor="#color/light_gray"
app:cornerRadius="30dp"
app:layout_constraintBottom_toTopOf="#+id/adView"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/linear_layout"
app:layout_constraintVertical_bias="1.0" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
correct_wrong_bottom_sheet_dialog.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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"
app:layout_behavior="#string/bottom_sheet_behavior"
app:behavior_hideable= "true"
android:id="#+id/bottom_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textview"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="10dp"
android:fontFamily="#font/fredoka_one"
android:lineSpacingExtra="1sp"
android:textColor="#color/black"
android:textSize="18sp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:text="Oops! Correct Answer is: \nHeart" />
<ozaydin.serkan.com.image_zoom_view.ImageViewZoom
android:id="#+id/image"
android:layout_width="0dp"
android:layout_height="150dp"
android:layout_marginStart="10dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="10dp"
android:src="#drawable/ic_memoneet"
android:visibility="gone"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textview" />
<com.pierfrancescosoffritti.androidyoutubeplayer.core.player.views.YouTubePlayerView
android:id="#+id/youtube_player_view"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginTop="10dp"
android:layout_marginEnd="10dp"
android:visibility="gone"
app:autoPlay="false"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/image"
app:showFullScreenButton="true"
app:showYouTubeButton="false" />
<com.adithya.memoneet.utils.FButton
android:id="#+id/continue_button"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_marginStart="20dp"
android:layout_marginTop="20dp"
android:layout_marginEnd="20dp"
android:layout_marginBottom="30dp"
android:fontFamily="#font/quando"
android:text="Continue"
android:textColor="#color/white"
android:textSize="20sp"
android:textStyle="bold"
app:buttonColor="#color/light_gray"
app:cornerRadius="30dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/youtube_player_view"
app:layout_constraintVertical_bias="1.0" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
McqFragment.java
//below function is called when the user clicks the button in MCQ fragment
public static void showCorrectWrongBottomSheetDialog(final FragmentActivity activity, String answer, String explanation, boolean correct, String subjectType, final CallBackListener callBackListener) {
try {
final BottomSheetDialog dialog = new BottomSheetDialog(activity);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.getWindow().setDimAmount(0.01f);
dialog.setContentView(R.layout.correct_wrong_bottom_sheet_dialog);
dialog.setCancelable(false);
ConstraintLayout bottom_layout = dialog.findViewById(R.id.bottom_layout);
FButton continue_button = dialog.findViewById(R.id.continue_button);
TextView textview = dialog.findViewById(R.id.textview);
String finalExplanation;
AppCompatImageView imageView = dialog.findViewById(R.id.image);
..more code..
}
when the bottom sheet is opened in mcq fragment I am not able to click the bookmark button in action bar
I have been searching for a long time, but none of the answers were helpful.
I'm making a chat app. When the user clicks on input edit text the keyboard shows up, and I want to automatically scroll to the bottom of scroll view, but it does not work as expected. It looks like it thinks that the scrollview has different dimensions than it really has. (probably doesn't realize that keyboard is taking some space)
When keyboard is hidden, programitacally scrolling to the bottom works as expected.
This is what i have now:
In manifest:
<activity
android:name=".ChatActivity"
android:windowSoftInputMode="adjustResize"
android:screenOrientation="portrait" />
In activity:
messageEditText.setOnFocusChangeListener(new View.OnFocusChangeListener()
{
#Override
public void onFocusChange(View v, boolean hasFocus)
{
if (!hasFocus)
{
HideKeyboard(v);
// ScrollToBottom ();
}
else
{
ScrollToBottom();
messagesScrollView.post(new Runnable() {
#Override
public void run() {
messageEditText.requestFocus();
}
});
ScrollToBottom();
}
}
});
private void ScrollToBottom ()
{
messagesLinearLayout.requestLayout();
messagesLinearLayout.post(new Runnable() {
#Override
public void run() {
messagesScrollView.scrollTo(0, messagesScrollView.getBottom());
}
});
}
Layout file:
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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"
android:background="#color/black"
android:clickable="true"
android:focusableInTouchMode="true"
tools:context=".ChatActivity">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/Theme.LetsGOFriends.AppBarOverlay"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="66dp"
android:background="#242A2F"
app:contentInsetLeft="0dp"
app:contentInsetRight="0dp"
app:contentInsetStart="0dp"
app:contentInsetStartWithNavigation="0dp"
app:contentInsetEnd="0dp"
app:buttonGravity="center_vertical"
app:popupTheme="#style/Theme.LetsGOFriends.PopupOverlay">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical|start">
<TextView
android:id="#+id/trainerNameChat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/profilePictureImageView"
android:layout_marginStart="10dp"
android:layout_marginTop="-2dp"
android:layout_toEndOf="#+id/profilePictureImageView"
android:maxLines="1"
android:textSize="14sp"
android:text="LoriMontana"
android:textColor="#color/white" />
<TextView
android:id="#+id/trainerCodeChat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/profilePictureImageView"
android:layout_alignStart="#+id/trainerNameChat"
android:layout_marginBottom="-2dp"
android:layout_marginStart="0dp"
android:maxLines="1"
android:textSize="14sp"
android:text="0467 0321 3849"
android:textColor="#color/white" />
<com.google.android.material.imageview.ShapeableImageView
android:id="#+id/profilePictureImageView"
android:layout_width="36dp"
android:layout_height="36dp"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginBottom="15dp"
android:layout_marginStart="0dp"
android:layout_marginTop="15dp"
android:padding="1dp"
app:shapeAppearanceOverlay="#style/roundedImageViewRounded"
app:srcCompat="#drawable/ic_default_profile_picture"
app:strokeColor="#484848"
app:strokeWidth="1dp" />
<ImageView
android:id="#+id/languageFlagChatImageView"
android:layout_width="18dp"
android:layout_height="16dp"
android:layout_alignBottom="#+id/trainerNameChat"
android:layout_alignTop="#+id/trainerNameChat"
android:layout_marginBottom="4dp"
android:layout_marginStart="5dp"
android:layout_marginTop="4dp"
android:layout_toEndOf="#+id/trainerNameChat"
tools:srcCompat="#tools:sample/avatars" />
</RelativeLayout>
</androidx.appcompat.widget.Toolbar>
</com.google.android.material.appbar.AppBarLayout>
<ScrollView
android:id="#+id/messagesScrollView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginBottom="-15dp"
android:focusableInTouchMode="true"
app:layout_constraintBottom_toTopOf="#+id/cardView3"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/appBarLayout">
<LinearLayout
android:id="#+id/messagesLinearLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="true"
android:focusableInTouchMode="true"
android:paddingBottom="20dp"
android:paddingTop="5dp"
android:orientation="vertical"
android:focusable="true" />
</ScrollView>
<androidx.cardview.widget.CardView
android:id="#+id/cardView3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
app:cardBackgroundColor="#android:color/transparent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:cardCornerRadius="0dp"
app:cardElevation="0dp">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.google.android.material.textfield.TextInputLayout
android:id="#+id/textInputLayout2"
style="#style/Widget.MaterialComponents.TextInputLayout.FilledBox"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginStart="5dp"
android:layout_marginEnd="5dp"
app:boxBackgroundColor="#242A2F"
app:boxCornerRadiusBottomEnd="15dp"
app:boxCornerRadiusBottomStart="15dp"
app:boxCornerRadiusTopEnd="15dp"
app:boxCornerRadiusTopStart="15dp"
app:boxStrokeColor="#color/teal_700"
app:boxStrokeWidth="0dp"
app:boxStrokeWidthFocused="0dp"
app:endIconContentDescription="Send"
app:endIconDrawable="#drawable/ic_baseline_send_24"
app:endIconMode="custom"
app:endIconTint="#color/white"
app:hintEnabled="false"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<com.google.android.material.textfield.TextInputEditText
android:layout_width="match_parent"
android:layout_height="match_parent"
android:hint="Enter your message.."
android:maxLength="250"
android:paddingBottom="8dp"
android:paddingTop="8dp"
android:textColor="#color/white"
android:textColorHint="#D3D3D3" />
</com.google.android.material.textfield.TextInputLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
</androidx.constraintlayout.widget.ConstraintLayout>
I think it's something wrong with layout file.
Try this code for scrolling down:
messagesScrollView.fullScroll(ScrollView.FOCUS_DOWN);
I'm still new with coding but I have a project with android studio right now. What I wanted to do was to add hyperlinks in a page. I've followed the steps and tutorials to do this very carefully but I can't seem to find the problem. In my Logcat it says
PID: 17644 java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setMovementMethod(android.text.method.MovementMethod)' on a null object reference
but I don't understand how it was caused. I have read some similar problems stating the findByViewId might be wrong but I don't think that is the case for my problem but I would love to be wrong. Here is my code. Any help is much appreciated.
public class LearnFragment extends Fragment {
private Button search;
private TextView faq_link_1, faq_link_2, faq_link_3, faq_link_4, faq_link_5;
EditText editSearch;
public LearnFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View viewRoot = inflater.inflate(R.layout.fragment_account, container, false);
faq_link_1 = (TextView) viewRoot.findViewById(R.id.faq1);
faq_link_2 = (TextView) viewRoot.findViewById(R.id.faq2);
faq_link_3 = (TextView) viewRoot.findViewById(R.id.faq3);
faq_link_4 = (TextView) viewRoot.findViewById(R.id.faq4);
faq_link_5 = (TextView) viewRoot.findViewById(R.id.faq5);
faq_link_1.setMovementMethod(LinkMovementMethod.getInstance());
faq_link_2.setMovementMethod(LinkMovementMethod.getInstance());
faq_link_3.setMovementMethod(LinkMovementMethod.getInstance());
faq_link_4.setMovementMethod(LinkMovementMethod.getInstance());
and this is the xml file
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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:id="#+id/frame_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".boundary.LearnFragment">
<AutoCompleteTextView
android:id="#+id/search_bar"
android:layout_width="0dp"
android:layout_height="44dp"
android:layout_marginStart="16dp"
android:layout_marginTop="28dp"
android:hint="Search..."
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintEnd_toStartOf="#+id/b_search"
app:layout_constraintHorizontal_bias="0.158"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="#+id/b_search"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="28dp"
android:layout_marginEnd="16dp"
android:layout_marginBottom="14dp"
android:layout_weight="1"
android:text="Search"
app:layout_constraintBottom_toTopOf="#+id/textView2"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/search_bar"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/faq1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="37dp"
android:text="#string/link_period_pain"
android:textSize="23sp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView2"
android:linksClickable="true"/>
<TextView
android:id="#+id/faq2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="27dp"
android:text="#string/menstrual_cramp_link"
android:textSize="23sp"
app:layout_constraintBottom_toTopOf="#+id/faq3"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/faq1"
android:linksClickable="true" />
<TextView
android:id="#+id/faq3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="32dp"
android:text="#string/late_period_link"
android:textSize="23sp"
app:layout_constraintBottom_toTopOf="#+id/faq4"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/faq2"
android:linksClickable="true" />
<TextView
android:id="#+id/faq4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="30dp"
android:text="#string/cervical_screening_link"
android:textSize="23sp"
app:layout_constraintBottom_toTopOf="#+id/faq5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/faq3"
android:linksClickable="true" />
<TextView
android:id="#+id/faq5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="35dp"
android:text="#string/pap_smear_link"
android:textSize="23sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/faq4"
android:linksClickable="true" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="13dp"
android:text="Not looking what you're looking for? Use the search bar to find out more!"
android:textSize="23sp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/search_bar" />
</androidx.constraintlayout.widget.ConstraintLayout>
I'm currently developing an application on Android Studio, and I've an issue with a scrollview. I create buttons dynamically (with a number of buttons equal to the number of buttons in my Database), but I can't scroll to the bottom of the page and see every button. I don't know if this issue is caused by the ScrollView or by the LinearLayout inside the ScrollView. Here is the XML and the Java code for it :
XML
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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:id="#+id/layoutgroup"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/gradient_list"
tools:context=".GroupList">
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginEnd="134dp"
android:fontFamily="#font/cartoon"
android:text="Artists"
android:textColor="#FFFFFF"
android:textSize="40dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/back"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/back"
android:layout_width="0dp"
android:layout_height="68dp"
android:layout_marginStart="11dp"
android:layout_marginEnd="67dp"
app:layout_constraintEnd_toStartOf="#+id/textView3"
app:layout_constraintHorizontal_bias="0.135"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0"
app:srcCompat="#drawable/back2" />
<ScrollView
android:id="#+id/listG"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:layout_marginLeft="1dp"
android:fillViewport="true"
android:layout_marginTop="10dp"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/back">
<LinearLayout
android:id="#+id/layoutG"
android:layout_width="match_parent"
android:fillViewport="true"
android:layout_height="wrap_content"
android:orientation="vertical" />
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
Java (the loop that creates buttons dynamically) :
while(db.selectArtist(i).size()>0){
List<String> data = db.selectArtist(i);
Log.i("Artiste",String.valueOf(data));
Button bouton = new Button(getApplicationContext());
bouton.setX(160);
bouton.setY(1 * i + 60);
bouton.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));
layoutG.addView(bouton,LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);
bouton.setText(data.get(0));
bouton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent start = new Intent(getApplicationContext(), start.class);
start.putExtra("NomArtiste", String.valueOf(bouton.getText()));
start.putExtra("IdArtiste", String.valueOf(data.get(1)));
startActivity(start);
finish();
}
});
i=i+1;
listB.add(i + 1);
}
Here is the result
image
Thanks for your help, it's my first post here, and I'm new in coding in Java!
You need to wrap the whole layout with the scroll view as wrapping just the linearlayout (in context of your code) will make the layout scrollable but it wont include its child views fully.
consider using the following layout: (tweak some values to your comfort)
<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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:id="#+id/your-desired-view-name"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="1dp"
android:layout_marginTop="10dp"
android:background="your-desired-background-here"
android:fillViewport="true"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/back"
tools:context="your-desired-context-here">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginEnd="134dp"
android:fontFamily="#font/cartoon"
android:text="Artists"
android:textColor="#FFFFFF"
android:textSize="40dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="#+id/back"
app:layout_constraintTop_toTopOf="parent" />
<ImageView
android:id="#+id/back"
android:layout_width="0dp"
android:layout_height="68dp"
android:layout_marginStart="11dp"
android:layout_marginEnd="67dp"
app:layout_constraintEnd_toStartOf="#+id/textView3"
app:layout_constraintHorizontal_bias="0.135"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0"
app:srcCompat="#drawable/back2" />
<LinearLayout
android:id="#+id/layoutG"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fillViewport="true"
android:orientation="vertical" />
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>
I have the following layout for a video player:
video_view.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<com.google.android.exoplayer2.ui.AspectRatioFrameLayout
android:id="#+id/aspectRatioLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center">
<SurfaceView
android:id="#+id/surfaceView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ImageView
android:id="#+id/posterImage"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:contentDescription="#string/poster_image_description" />
<com.google.android.exoplayer2.ui.SubtitleView
android:id="#+id/subtitleView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<com.google.android.exoplayer2.ui.PlayerControlView
android:id="#+id/nativeControls"
android:layout_width="match_parent"
android:layout_height="match_parent">
</com.google.android.exoplayer2.ui.PlayerControlView>
<com.sdk.adapters.controls.ControlBar
android:id="#+id/controls"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</com.sdk.adapters.controls.ControlBar>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="#+id/messageOverlay"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="#80000000">
<TextView
android:id="#+id/messageOverlayText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:text="#string/message_overlay"
android:textColor="#android:color/white"
android:textSize="30sp" />
</FrameLayout>
</FrameLayout>
</com.google.android.exoplayer2.ui.AspectRatioFrameLayout>
</FrameLayout>
The ControlBar is defined as:
control_bar_view.xml
<androidx.constraintlayout.widget.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"
android:background="#80000000">
<!-- BEGIN: Strut -->
<View
android:id="#+id/exitPlaceholder"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintWidth_percent="0.1" />
<!-- END: Strut -->
<TextView
android:id="#+id/broadcastName"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:text="#string/broadcast_name"
android:textColor="#ffffff"
android:textSize="18sp"
app:layout_constraintEnd_toStartOf="#id/castButton"
app:layout_constraintStart_toEndOf="#id/exitPlaceholder"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/siteName"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:text="#string/site_name"
android:textColor="#ffffff"
android:textSize="18sp"
app:layout_constraintEnd_toStartOf="#id/castButton"
app:layout_constraintStart_toEndOf="#id/exitPlaceholder"
app:layout_constraintTop_toBottomOf="#id/broadcastName" />
<ImageButton
android:id="#+id/castButton"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_margin="10dp"
android:contentDescription="#string/send_to_google_chromecast"
android:visibility="invisible"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintEnd_toStartOf="#id/airplayButton"
app:layout_constraintHeight_percent="0.1"
app:layout_constraintTop_toTopOf="parent" />
<ImageButton
android:id="#+id/airplayButton"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_margin="10dp"
android:contentDescription="#string/send_to_apple_airplay"
android:visibility="invisible"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintEnd_toStartOf="#id/optionsButton"
app:layout_constraintHeight_percent="0.1"
app:layout_constraintTop_toTopOf="parent" />
<ImageButton
android:id="#+id/optionsButton"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_margin="10dp"
android:background="#android:color/transparent"
android:contentDescription="#string/fullscreen"
android:scaleType="fitStart"
android:src="#drawable/closed_caption_gray"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHeight_percent="0.1"
app:layout_constraintTop_toTopOf="parent" />
<ImageButton
android:id="#+id/skipBackButton"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#android:color/transparent"
android:contentDescription="#string/skip_back_button"
android:scaleType="fitStart"
android:src="#drawable/back_30"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintEnd_toStartOf="#id/playPauseToggle"
app:layout_constraintHeight_percent="0.20"
app:layout_constraintHorizontal_chainStyle="spread"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<ImageButton
android:id="#+id/playPauseToggle"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#android:color/transparent"
android:contentDescription="#string/play_button"
android:scaleType="fitStart"
android:src="#drawable/play"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintEnd_toStartOf="#id/skipForwardButton"
app:layout_constraintHeight_percent="0.25"
app:layout_constraintStart_toEndOf="#id/skipBackButton"
app:layout_constraintTop_toTopOf="parent" />
<ImageButton
android:id="#+id/skipForwardButton"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="#android:color/transparent"
android:contentDescription="#string/skip_forward_button"
android:scaleType="fitStart"
android:src="#drawable/forward_30"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHeight_percent="0.20"
app:layout_constraintStart_toEndOf="#id/playPauseToggle"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="#+id/currentTime"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_margin="10dp"
android:text="#string/null_time"
android:textColor="#ffffff"
android:textSize="18sp"
app:layout_constraintBottom_toTopOf="#id/seekBar"
app:layout_constraintStart_toStartOf="parent" />
<TextView
android:id="#+id/remainingTime"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_margin="10dp"
android:text="#string/null_time"
android:textColor="#ffffff"
android:textSize="18sp"
app:layout_constraintBottom_toTopOf="#id/seekBar"
app:layout_constraintEnd_toEndOf="parent" />
<SeekBar
android:id="#+id/seekBar"
android:layout_width="0dp"
android:layout_height="0dp"
android:progress="50"
android:progressDrawable="#drawable/seek_bar"
android:thumb="#drawable/seek_thumb"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="#id/fullscreenButton"
app:layout_constraintHorizontal_bias="1.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#id/fullscreenButton"
app:layout_constraintVertical_bias="0.0" />
<ImageButton
android:id="#+id/fullscreenButton"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_margin="10dp"
android:background="#android:color/transparent"
android:contentDescription="#string/fullscreen"
android:scaleType="fitStart"
android:src="#drawable/fullscreen"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHeight_percent="0.1" />
</androidx.constraintlayout.widget.ConstraintLayout>
In the layout editor in Android Studio, this looks good:
However when I run an actual app, the ControlBar (and only the ControlBar) isn't filling the screen! Everything else stretches to fill the screen perfectly:
What am I doing wrong?
If it helps, the ControlBar is a custom View which extends ConstraintLayout. Here's what the initialization code looks like:
ControlBar.java
public class ControlBar extends ConstraintLayout
{
private BFPlayer player;
private TextView broadcastName;
// ... references for the various subviews ...
private ImageButton fullscreenButton;
public ControlBar ( Context context )
{
super(context);
init(context);
}
public ControlBar ( Context context, AttributeSet attrs )
{
super(context, attrs);
init(context);
}
public ControlBar ( Context context, AttributeSet attrs, int defStyleAttr )
{
super(context, attrs, defStyleAttr);
init(context);
}
private void init ( Context context )
{
LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.bf_control_bar_view, null);
addView(view);
broadcastName = findViewById(R.id.broadcastName);
// ... grab references to the various buttons ...
fullscreenButton = findViewById(R.id.fullscreenButton);
// ... set up listeners for the various buttons ...
}
// ... The rest of the class ...
}
What am I doing wrong? I'm sure it's something simple, but I've been staring for a minute and can't figure it out. (Note: I'm pretty new to Android development, and not very experienced. My job has me changing platforms and programming languages very often)
You're not telling it what the parent is when you inflate your View, so it doesn't apply the LayoutParams correctly:
View view = inflater.inflate(R.layout.bf_control_bar_view, null);
addView(view);
Instead, tell it to inflate directly into the parent:
View view = inflater.inflate(R.layout.bf_control_bar_view, this);