I am trying to create a swiping images inside fragment. I had created tabbed activity using view pager and this is working fine. In one of the tab I am trying to create Image swipe.
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view= inflater.inflate(R.layout.fragment_collection_fragment1, container, false);
ViewPager viewPager= (ViewPager)view.findViewById(R.id.collection1_viewPager);
ImageSwipeAdapter imageSwipeAdapter= new ImageSwipeAdapter(getActivity().getSupportFragmentManager());
viewPager.setAdapter(imageSwipeAdapter);
return view;
}
After deploying this the app stops working.
In some internet content it was mention to use
getChildFragmentManager()
but it was also not working. What is the issue with the code?
Adapter code for Image Swipe
public class ImageSwipeAdapter extends FragmentStatePagerAdapter {
public ImageSwipeAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
Fragment f= new ImageSwipe();
Bundle args= new Bundle();
args.putInt("count", position + 1);
f.setArguments(args);
return f;
}
#Override
public int getCount() {
return 3;
}
}
Fragment 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"
tools:context="com">
<android.support.v4.view.ViewPager
android:layout_width="match_parent"
android:layout_height="500dp"
android:id="#+id/collection1_viewPager">
</android.support.v4.view.ViewPager>
<TextView
android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="160dp"
android:layout_marginTop="203dp"
android:text="TextView" />
Related
I want to call a fragment on button click which is a fragment. I tried this code but it's not working. with this code when I click on the button it shows next fragment but not its designing. I see only a blank page.
This is my main xml :-
<LinearLayout
android:id="#+id/main_layout"
android:orientation="vertical"
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">
<!-- our toolbar -->
<!-- our tablayout to display tabs -->
<android.support.design.widget.TabLayout
android:id="#+id/tabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="scrollable"
app:tabGravity="fill"
android:background="#fa4022"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
<!-- View pager to swipe views -->
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="fill_parent"/>
I have an dashboard tab in this TabLayout. In this dashboard tab i have an button which id is userprofile. after click on this button i want to go on user_profile.xml
public class Dashboard extends Fragment implements View.OnClickListener {
Button userprofile;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.dashboard, container, false);
userprofile=(Button)rootView.findViewById(R.id.userprofile);
userprofile.setOnClickListener(this);
return rootView;
}
#Override
public void onClick(View view) {
Fragment fragment = null;
switch (view.getId()) {
case R.id.userprofile:
fragment = new User_Profile();
replaceFragment(fragment);
break;
}
}
private void replaceFragment(Fragment fragment) {
User_Profile user_profile = new User_Profile();
FragmentTransaction transaction = getFragmentManager().beginTransaction();
transaction.replace(R.id.pager, fragment);
transaction.addToBackStack(null);
transaction.commit();
}
User_Profile class code is :-
public class User_Profile extends Fragment {
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View rooView=inflater.inflate(R.layout.user_profile, container, false);
return rooView;
}
}
user_profile.xml is :-
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="User Profile"
android:textSize="30dp"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"/>
If you can see fragment on button click but not designing then its may error in your fragment .xml file. By using proper view problem can be solve. If there is also a problem with same post their .xml file code.
Can you show us some more data please? What's the XML for the pager fragment you're trying to replace the current fragment with?
Could you check that you're referring to the layout of that XML file, and not the individual pager element too?
(Since transaction.replace requires a fragment container as it's first argument)
Problem
As shown in the figure below, I have two tabs called "température" which are created in the same way (see mainFragment). In this two tabs, I have a viewpager to get previous graphics ( 05 august, 04 august,...).
The first tab works well but in the second, nothing appears. When debugging, I can see that the fragment is created in both cases. It's only on the second tab where the problem is. Even more, I can see the viewpager working when sliding to the left or right end.
I'm seeking since hours now and I don't understand where the problem is. Why the fragments don't appear ?
I'm using android.support.v13.app.FragmentStatePagerAdapter for the adapter.
Here is a short movie to show the problem :
https://www.dropbox.com/s/vf8qlrd75mdwijp/device-2017-08-06-214510.mp4?dl=0
Code
MainFragment
public class MainFragment extends Fragment implements BTListener {
// the different ID for the views.
private final static int ID_TEMPERATURE = 1;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, Bundle savedInstanceState) {
final View rootView = inflater.inflate(R.layout.main,container,false);
final ViewGroup mainContainer = (ViewGroup) rootView.findViewById(R.id.main_container);
createTemperatureTab(mainContainer);
createTemperatureTab(mainContainer);
return rootView;
}
private void createTemperatureTab(ViewGroup mainContainer){
//inflate the view
ViewGroup view = (ViewGroup) LayoutInflater.from(getActivity()).inflate(R.layout.main_list,mainContainer,false);
((TextView)view.findViewById(R.id.title_main_list)).setText("Température");
((TextView)view.findViewById(R.id.information_main_list)).setText("°C");
final ExpandableLayout expandableLayout = (ExpandableLayout) view.findViewById(R.id.expandable_layout);
CustomPager viewPager = (CustomPager) view.findViewById(R.id.viewpager);
LinearGraphAdapter linearGraphAdapter = new LinearGraphAdapter(getChildFragmentManager());
viewPager.setAdapter(linearGraphAdapter);
viewPager.setCurrentItem(linearGraphAdapter.getCount());
expandableLayout.setExpanded(false);
expandableLayout.setDuration(500);
expandableLayout.setInterpolator(new DecelerateInterpolator());
view.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(expandableLayout.isExpanded()) {
expandableLayout.collapse();
}
else {
expandableLayout.expand();
}
}
});
mainContainer.addView(view);
}
}
main_list
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="#+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:src="#mipmap/ic_launcher" />
<TextView
android:id="#+id/title_main_list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textSize="20sp" />
<TextView
android:id="#+id/information_main_list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="80dp"
android:textSize="20sp" />
</LinearLayout>
<net.cachapa.expandablelayout.ExpandableLayout
android:id="#+id/expandable_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.example.renaud.aquariumslinding.adapter.CustomPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</com.example.renaud.aquariumslinding.adapter.CustomPager>
</net.cachapa.expandablelayout.ExpandableLayout>
</LinearLayout>
LineGraphFragment
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, Bundle savedInstanceState) {
ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.linear_graph_layout,container,false);
lineChart = (LineChart) rootView.findViewById(R.id.linear_graph);
initiateChart(lineChart); // not important for this case
drawChart(lineChart,dayOfYear); // not important for this case
return rootView;
}
linear_graph_layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/linear_graph_date"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:elevation="4dp"
android:textColor="#fff" />
<com.github.mikephil.charting.charts.LineChart
android:id="#+id/linear_graph"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
LinearGraphAdapter
public class LinearGraphAdapter extends FragmentStatePagerAdapter {
public static int MAXIMUM_COUNT_PAGER = 7;
private int mCurrentPosition = -1;
public LinearGraphAdapter(FragmentManager fragmentManager){
super(fragmentManager);
}
#Override
public Fragment getItem(int position) {
Bundle bundle = new Bundle();
bundle.putInt(Constant.CUSTOM_PAGER_NUMBER,MAXIMUM_COUNT_PAGER-position);
Fragment fragment = new LinearGraphFragment();
fragment.setArguments(bundle);
return fragment;
}
#Override
public int getCount() {
return MAXIMUM_COUNT_PAGER;
}
#Override
public void setPrimaryItem(ViewGroup container, int position, Object object) {
super.setPrimaryItem(container, position, object);
if (position != mCurrentPosition) {
Fragment fragment = (Fragment) object;
CustomPager pager = (CustomPager) container;
if (fragment != null && fragment.getView() != null) {
mCurrentPosition = position;
pager.measureCurrentView(fragment.getView());
}
}
}
}
Ok, after a night of research and reading the API I figured it out. I don't understand everything but it seems the v13 and v4 library have a conflict.
To override it, firstly :
Make sure that you called getChildFragmentManager() instead of getFragmentManager()
Create a different ID for all the different viewpageryou have. Those IDs must have at least 4 digits. Of course, it is better to have those in R.String
Set your ID in every viewpager by calling setID()
If it doesn't work, please clean and rebuild your project.
And finally, the reward :
I hope that it will help.
I'm trying to implement ViewPager with DepthPageTransformer just like Snapchat application. In SnapChat application, there is a Camera screen which always comes in center of ViewPager and swiping from left or right brings other fragments on top of camera screen.
I've found code for DepthPageTransformer from this link. But the problem with this demo is that it brings all the next screen views from behind. Just like SnapChat I've a Camera screen in center and 2 screens coming on top from left and two screens coming on top from right on Camera screen.
So, how can I create a PageTransformer which brings fragments from left or right on the top of my center screen which is Camera?
I think you should provide 5 fragments in your FragmentPagerAdapter, the third (index=2) fragment will be fragment with camera view,
viewPager.setCurrentItem(2); //2 is index of camera fragment
Then your ViewPager.PageTransformer should look like this:
#Override
public void transformPage(View page, float position) {
int pageIndex = (int) page.getTag(); //im stroing pageIndex of fragment in its tag
if(pageIndex == 2) { //2 is index of camera fragment
float currentTranslation = - position * page.getWidth();
ViewCompat.setTranslationX(page, currentTranslation);
ViewCompat.setTranslationZ(page, -1);
return;
}
I am stroing pageIndex while fragment's view is created in its tag.
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
...
view.setTag(pageIndex);
return view;
}
Here is gif with results:
https://media.giphy.com/media/OIwmXdr3nukq4/giphy.gif
Fragment with food is the one you should replace with your camera fragment.
This is what they have done, if you don't get the concept shoot a comment.
Basically what they are doing is they have a MainActivity which is showing the camera and it is holding those three buttons in the bottom plus its holding viewpager that viewpager is holding three fragments
1.LeftFragment (Fragment on the left side).
2.CenterFragment (This fragment is transparent so when it comes in center the mainactivity content is visible which is camera).
3.RightFragment(Fragment on the right side).
Now Comes the coding part.
MainActivity.java.
public class MainActivity extends AppCompatActivity {
private ViewPager mViewPager;
#RequiresApi(api = Build.VERSION_CODES.KITKAT_WATCH)
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mViewPager = (ViewPager) findViewById(R.id.view_pager);
mViewPager.setAdapter(new PagerAdapter(getSupportFragmentManager()));
mViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
//Here calculate the amount by which the pages are scrolled and animate your buttons accordingly.
}
#Override
public void onPageSelected(int position) {
}
#Override
public void onPageScrollStateChanged(int state) {
}
});
}
class PagerAdapter extends FragmentStatePagerAdapter {
public PagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new LeftFragment();
case 1:
return new CenterFragment();
case 2:
return new RightFragment();
}
return null;
}
#Override
public int getCount() {
return 3;
}
}
}
activity_main.xml
<?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:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="Here is your camera."
android:textAppearance="?android:attr/textAppearanceLarge"/>
<android.support.v4.view.ViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="Button"/>
</RelativeLayout>
Then comes the fragments
LeftFragment.java
public class LeftFragment extends BaseController {
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_sheet2, container, false);
return rootView;
}
}
fragment_left.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="2dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFA726"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_gravity="center"
android:fontFamily="sans-serif"
android:text="Left"
android:textColor="#fff"
android:textSize="30sp"/>
</RelativeLayout>
</android.support.v7.widget.CardView>
RightFragment.java
public class RightFragment extends BaseController {
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_sheet1, container, false);
return rootView;
}
}
fragment_right.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="2dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#FFA726"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_gravity="center"
android:fontFamily="sans-serif"
android:text="Right"
android:textColor="#fff"
android:textSize="30sp"/>
</RelativeLayout>
</android.support.v7.widget.CardView>
I have left the animation part which I think you can achieve with little bit of calculation in viewpager OnPageChangeListener.
Happy Coding.
I wanna open fragment from my activity. The problem is that the fragment never appears.
This is the part of my activity:
btn_opciones.setOnValueChangedListener(new ToggleButton.OnValueChangedListener() {
#Override
public void onValueChanged(int position) {
if(position == 1){
OrdenarComplejosFragment ordenarComplejosFragment = new OrdenarComplejosFragment();
FragmentManager manager = getSupportFragmentManager();
FragmentTransaction ft = manager.beginTransaction();
ft.setCustomAnimations(R.anim.fade_in, R.anim.fade_out);
ft.add(ordenarComplejosFragment, null);
ft.commit();
}
}
});
And this is my fragment that I wanna open and show:
public class OrdenarComplejosFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_ordenar_complejos, container, false);
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
//do your stuff for your fragment here
}
}
The xml of the fragment above:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="HOLAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
android:id="#+id/textView35"
android:layout_gravity="center_horizontal" />
</LinearLayout>
I don't know why the fragment never show. The button works fine.
Try using a different "add" method. Using the one which takes in a view id indicates where the fragment should show up within the existing Activity's layout.
ft.add(R.id.fragment_frame, ordenarComplejosFragment);
Fragments are always housed within an Activity. If your activity doesn't provide a container/location for the fragment to show up, you'll need to re-think the layout or consider opening this new view with a separate Activity.
I have a ViewPager which holds multiple base fragments, each base fragment have four more nested fragments and each nested fragment is a combination of 5 imageViews and textView.
(This is what I intended to do)
I have created a sample application but I am not able to implement that properly. I cannot see any view in the nested fragment or the base fragment.
Here's the code for the sample application
main.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"
>
<fragment android:name="com.example.nestedfragments.BaseFragment"
android:id="#+id/left_fragment"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="match_parent"/>
</LinearLayout>
MainActivity.java
package com.example.nestedfragments;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
public class MainActivity extends FragmentActivity {
/**
* Called when the activity is first created.
*/
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}
base_fragment.xml
<?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:gravity="center">
<Button
android:id="#+id/button1"
android:text="Launch Nested Fragment"
android:gravity="center"
android:layout_alignParentBottom="true"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:paddingBottom="10dp"/>
</RelativeLayout>
BaseFragment.java
public class BaseFragment extends Fragment {
Button doNestingButton;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// set the view
View root = inflater.inflate(R.layout.base_fragment, container, false);
doNestingButton = (Button) root.findViewById(R.id.button1);
doNestingButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Fragment videoFragment = new NestedFragment();
// we get the 'childFragmentManager' for our transaction
FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
// make the back button return to the main screen
// and supply the tag 'left' to the backstack
transaction.addToBackStack("left");
// add our new nested fragment
transaction.add(getId(), videoFragment, "left");
// commit the transaction
transaction.commit();
}
});
return root;
}
}
nested_fragment.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="154dp"
android:layout_height="154dp"
android:id="#+id/imageView" android:layout_gravity="left|center_vertical"
android:src="#drawable/ic_splash"/>
</LinearLayout>
NestedFragment.java
public class NestedFragment extends Fragment {
public NestedFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.nested_fragment, container, false);
ImageView doNestingButton = (ImageView) root.findViewById(R.id.imageView);
return root;
}
Once again this is a sample application, please guide me.
From your above code, you have not used the fragment container layout such as FrameLayout in base_fragment.xml .So add the frame layout for nested fragment inbase_fragment.xml