I have downloaded the library and properly included into my android studio project
I am not able to see Circle indicator even after using library:
Here is my code:
MAIN FILE:
public class MyActivity extends FragmentActivity implements OnPageChangeListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
List<Fragment> list = new ArrayList<Fragment>();
list.add(new MyFragment());
list.add(new MyFragment());
list.add(new MyFragment());
MyPagerAdapter a = new MyPagerAdapter(getSupportFragmentManager(), list);
ViewPager pager = (ViewPager) findViewById(R.id.viewpager);
pager.setAdapter(a);
CirclePageIndicator mIndicator = (CirclePageIndicator)findViewById(R.id.indicator);
mIndicator.setViewPager(pager);
}
MyPagerAdapter.java
public class MyPagerAdapter extends FragmentPagerAdapter {
List<Fragment> fragments;
public MyPagerAdapter(FragmentManager fm,List<Fragment> f) {
super(fm);
this.fragments = f;
}
#Override
public Fragment getItem(int arg0) {
return fragments.get(arg0);
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return fragments.size();
}
}
MyFragment:
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanse) {
final View rootView = inflater.inflate(R.layout.fragment_main, container, false);
return rootView;
}
activity_my.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.support.v4.view.ViewPager xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<com.viewpagerindicator.CirclePageIndicator
android:id="#+id/indicator"
android:padding="10dip"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
/>
</android.support.v4.view.ViewPager>
</RelativeLayout>
fragment_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="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/gallery"
android:src="#drawable/pic1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
Output:
Related
Trying to use LeanbackTabLayout & LeanbackViewPager to create top navigation in my AndroidTv app, but somehow my rowsAdapter is null & crashes on setAdapter. When I debug, I see that the ListRow is not null. What am I doing wrong?
HomeActivity:
public class HomeActivity extends FragmentActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
LeanbackTabLayout leanbackTabLayout = ActivityCompat.requireViewById(this, R.id.tablayout);
leanbackTabLayout.setFocusable(true);
LeanbackViewPager leanbackViewPager = ActivityCompat.requireViewById(this, R.id.viewpager);
TablayoutAdapter adapter = new TablayoutAdapter(getSupportFragmentManager(), 3);
leanbackViewPager.setAdapter(adapter);
leanbackTabLayout.setupWithViewPager(leanbackViewPager);
}
}
TablayoutAdapter:
public class TablayoutAdapter extends FragmentStatePagerAdapter {
int tabCount;
public TablayoutAdapter(#NonNull FragmentManager fm, int tabCount) {
super(fm);
this.tabCount = tabCount;
}
#NonNull
#Override
public Fragment getItem(int position) {
return new HomeFragment();
}
#Override
public int getCount() {
return tabCount;
}
}
HomeActivity xml:
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 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=".HomeActivity">
<androidx.leanback.tab.LeanbackTabLayout
android:id="#+id/tablayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:focusable="true"
android:nextFocusDown="#id/viewpager"
/>
<androidx.leanback.tab.LeanbackViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
HomeFragment:
public class HomeFragment extends Fragment {
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_home, container, false);
return view;
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
ListRowPresenter lrp = new ListRowPresenter();
final CardPresenter cardPresenter = new CardPresenter();
ArrayObjectAdapter rowsAdapter = new ArrayObjectAdapter(lrp);
for (int i = 0; i < 3; ++i) {
ArrayObjectAdapter listRowAdapter = new ArrayObjectAdapter(cardPresenter);
listRowAdapter.add(new Navigation("Tab1"));
listRowAdapter.add(new Navigation("Tab2"));
listRowAdapter.add(new Navigation("Tab3"));
HeaderItem header = new HeaderItem(i, "Row " + i);
System.out.println(header);
System.out.println("hello");
rowsAdapter.add(new ListRow(header, listRowAdapter));
}
RowsSupportFragment rowsSupportFragment = (RowsSupportFragment) getChildFragmentManager().findFragmentById(R.id.row1);
System.out.println(rowsAdapter);
System.out.println("hello");
rowsSupportFragment.setAdapter(rowsAdapter);
}
}
HomeFragment xml:
<?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">
<FrameLayout
android:id="#+id/row1"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
i'm a beginner trying to apply the idea of having tabbed layout inside a "main" fragment that allows me to navigate to other "secondary fragments" as well, there is a main activity with a button which when clicked will inflate the tabbed fragment inside this activity.
but what i got is this: the tabs are duplicated on just the first fragment for some reason.
here is my code: MainActiviy.java
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void fragny(View view) {
FragmentTransaction ft=getSupportFragmentManager().beginTransaction();
ft.replace(R.id.ma,new labRatFrag());
ft.commit();
}
}
main_activity.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:id="#+id/ma"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:onClick="fragny"
/>
FragmentPagerAdapter
public class FragAdapt extends FragmentPagerAdapter {
private static final String[] TAB_TITLES = new String[]{"test1","test2","test3"};
private final Context mContext;
public FragAdapt(Context context ,FragmentManager fm) {
super(fm);
mContext=context;
}
#NonNull
#Override
public Fragment getItem(int position) {
switch (position){
case 0:
return new labRatFrag();
case 1:
return new labRatFrag2();
case 2:
return new labRatFrag3();
default:
return null;
}
}
#Override
public String getPageTitle(int position) {
return TAB_TITLES[position];
}
#Override
public int getCount() {
return 3;
}
}
my main fragment (labRatFrag.java)
public class labRatFrag extends Fragment {
public labRatFrag() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v= inflater.inflate(R.layout.fragment_lab_rat, container, false);
FragAdapt fa=new FragAdapt(getContext(),getActivity().getSupportFragmentManager());
ViewPager vp=v.findViewById(R.id.pagery);
vp.setAdapter(fa);
TabLayout tabs = v.findViewById(R.id.toto);
tabs.setupWithViewPager(vp);
return v;
}
}
fragment_lab_rat.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 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"
>
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay"
>
<com.google.android.material.tabs.TabLayout
android:id="#+id/toto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"/>
</com.google.android.material.appbar.AppBarLayout>
<androidx.viewpager.widget.ViewPager
android:id="#+id/pagery"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
i want to do this in order to apply this idea with bottom navigation or navigation drawer for a future app i'm planning
FragAdapt is for your secondary fragment, right?
if yes, try replacing
FragAdapt fa=new FragAdapt(getContext(),getActivity().getSupportFragmentManager());
with
FragAdapt fa=new FragAdapt(getContext(),getChildFragmentManager());.
It might help. If not, will prepare a demo for you
I am trying to create a horizontal slider of images fitted in my imageview in my main layout file. But instead of imageview sliding on touch, the code is moving the whole layout horizontally.
Following is my Java code for sliding:
public class Artprofile extends FragmentActivity {
static final int NUM_ITEMS = 5;
ImageFragmentPagerAdapter imageFragmentPagerAdapter;
ViewPager viewPager;
public static final String[] IMAGE_NAME = {"a", "b", "c", "d", "e",};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_page);
imageFragmentPagerAdapter = new ImageFragmentPagerAdapter(getSupportFragmentManager());
viewPager = (ViewPager) findViewById(R.id.pager);
viewPager.setAdapter(imageFragmentPagerAdapter);
}
public static class ImageFragmentPagerAdapter extends FragmentPagerAdapter {
public ImageFragmentPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public int getCount() {
return NUM_ITEMS;
}
#Override
public Fragment getItem(int position) {
SwipeFragment fragment = new SwipeFragment();
return SwipeFragment.newInstance(position);
}
}
public static class SwipeFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View swipeView = inflater.inflate(R.layout.layoutart, container, false);
ImageView imageView = (ImageView) swipeView.findViewById(R.id.image_view1);
Bundle bundle = getArguments();
int position = bundle.getInt("position");
String imageFileName = IMAGE_NAME[position];
int imgResId = getResources().getIdentifier(imageFileName, "drawable", "com.example.user.myapplication1");
imageView.setImageResource(imgResId);
return swipeView;
}
static SwipeFragment newInstance(int position) {
SwipeFragment swipeFragment = new SwipeFragment();
Bundle bundle = new Bundle();
bundle.putInt("position", position);
swipeFragment.setArguments(bundle);
return swipeFragment;
}
}
}
Following is my main layout file:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:background="#drawable/mobileback"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<ImageView android:id="#+id/image_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:maxWidth="150dp"
android:maxHeight="150dp"
android:scaleType="fitCenter"
android:layout_marginRight="50dp"
android:layout_marginTop="30dp"
android:layout_marginLeft="400dp"
android:src="#drawable/profilewindow1"
android:layout_marginEnd="58dp"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true" />
<FrameLayout
android:layout_width="match_parent"
android:layout_height="330dp"
android:layout_alignParentStart="true"
android:maxWidth="150dp"
android:maxHeight="150dp"
android:layout_below="#+id/image_view"
android:id="#+id/layout_mobile1">
<ImageView
android:id="#+id/image_view1"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</FrameLayout>
</RelativeLayout>
And this is the Fragment layout used for sliding:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v4.view.ViewPager>
I dont understand the problem. Kindly help. Thanks in advance
You can use a layout to wrap imageview and then wrap the layout in horizontal scrollview
So this has been bugging me for like a week and I haven't found the answer yet.
Basically I have this MainActivity which contains the main code and a fragment that work for the listview.
MainActivity.java
public class MainActivity extends AppCompatActivity {
private Handler handler = new Handler();
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
private Button bNext;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(false);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new RoomServer(), "Room Server");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
#Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
RoomServer.java
public class RoomServer extends ListFragment implements OnItemClickListener{
public RoomServer() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_rs, container, false);
return view;
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
getListView().setChoiceMode(getListView().CHOICE_MODE_MULTIPLE);
getListView().setTextFilterEnabled(true);
ArrayAdapter adapter = ArrayAdapter.createFromResource(getActivity(), R.array.rs_list, android.R.layout.simple_list_item_checked);
setListAdapter(adapter);
getListView().setOnItemClickListener(this);
}
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(getActivity(), "Item: " + position, Toast.LENGTH_SHORT).show();
}
}
Fragment_rs.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:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".fragments.RoomServer">
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
<TextView
android:id="#android:id/empty"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</TextView>
<Button
android:id="#+id/bNext_rs"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/next"
android:layout_marginRight="39dp"
android:layout_marginEnd="39dp"
android:layout_marginBottom="60dp"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
</RelativeLayout>
activity_main.xml
<android.support.design.widget.CoordinatorLayout 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.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" >
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="scrollable"
app:tabGravity="fill"/>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
The items of listview r declared inside strings.XML
As u can see I'm using CHOICE_MODE_MULTIPLE to create checkbox in the listview. And now I'm stuck at how to get the value of this checkbox. I'm planning to use Volley to send value to my database by a button click. Most of the answer I saw was using the isChecked and stuff but I dont really understand how to implement it in my array adapter.
You can either implement a custom array adapter yourself, or use this method in the ListView class to get a SparseBooleanArray of the indexes of the selected items:
//Submit button example
submitButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//Get base list
String[] items = getActivity().getResources().getStringArray(R.array.rs_list);
//Get selected items & set intent args
SparseBooleanArray selectedItems = getListView().getCheckedItemPositions();
ArrayList<String> argList = new ArrayList<>();
for (int i = 0; i < selectedItems.size(); i++) {
argList.add(items[selectedItems.keyAt(i)]);
}
//Start activity
Intent intent = new Intent();
intent.putStringArrayListExtra("SelectedItems", argList);
getActivity().startActivity(intent);
}
});
This is my code:
.......
CollectionPagerAdapter mCollectionPagerAdapter;
ViewPager mViewPager;
#Override
protected void onCreate(Bundle savedInstanceState) { Log.i("App", "U reaching Da onCreate");
super.onCreate(savedInstanceState);
setContentView(R.layout.main_fragment);
mCollectionPagerAdapter =
new CollectionPagerAdapter(
getSupportFragmentManager());
mViewPager = (ViewPager) findViewById(R.id.CardsPager);
mViewPager.setAdapter(mCollectionPagerAdapter);
....
//ADAPTER:
class CollectionPagerAdapter extends FragmentStatePagerAdapter {
public CollectionPagerAdapter(android.support.v4.app.FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int i) {
Fragment fragment = new ObjectFragment();
Bundle args = new Bundle();
// Our object is just an integer :-P
args.putInt(ObjectFragment.ARG_OBJECT, i + 1);
fragment.setArguments(args);
Log.i("App", "U reaching Da Adapter!!");
return fragment;
}
#Override
public int getCount() {
return 100;
}
#Override
public CharSequence getPageTitle(int position) {
return "OBJECT " + (position + 1);
}
}
.....
//ObjectFragment.java
public class ObjectFragment extends Fragment {
public static final String ARG_OBJECT = "object";
#Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
// The last two arguments ensure LayoutParams are inflated
// properly.
View rootView = inflater.inflate(
R.layout.cards_pager, container, false);
Bundle args = getArguments();
((TextView) rootView.findViewById(android.R.id.text1)).setText(
Integer.toString(args.getInt(ARG_OBJECT)));
Log.i("App", "U reaching Da inflater Y U no work?!");
return rootView;
}
}
main_fragment.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/main_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:weightSum="100" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="40"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:orientation="horizontal"
android:background="#109922" >
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="20"
android:orientation="vertical"
android:background="#115599">
<android.support.v4.view.ViewPager
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/CardsPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000000" >
</android.support.v4.view.ViewPager>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="40"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#ff9922">
</LinearLayout>
</LinearLayout>
It seems like the app never reach the adapter.
I did exactly as the android developers guide.
I don't know what's going on here, eclipse let me run the app and everyting seems to be fine in the code but it just no working
I finally got it right,
the problem is that I have set the adapter in the onCreate() methhod,
to solve this problem I have set the adapter in the onCreateView() methhod in the MainFragment.