Develop Reference

How do I set the click method on CARD VIEW in VIEW PAGER that using ArrayList<> to add the object?

I want to make clicklistener on cardview in my viewpager to startActivity(Intent)
i've tried to make clicklistener with position in setOnPageChangeListener method, but it does not work for me. Please help.
I want to set Intent on cardview.clicklistener, but i don't understand how to set by position, wheter using swith or if method
HERE MY ACTIVITY CODE :
public class Activity extends AppCompatActivity {
ViewPager viewPager;
Adapter adapter;
List<Model> models;
#Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity);
CardView cardView = findViewById(R.id.cardViewLogin);
//ImageViewPager
models = new ArrayList<>();
models.add(new Model(R.drawable.m,"title", "desc"));
models.add(new Model(R.drawable.d,"title", "desc"));
models.add(new Model(R.drawable.a,"title", "desc"));
adapter = new Adapter(models,this);
viewPager = findViewById(R.id.view_pager);
viewPager.setAdapter(adapter);
viewPager.setPadding(130,0,130,0);
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageScrolled(final int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(final int position) {
}
#Override
public void onPageScrollStateChanged(int state) {
}
});
HERE MY ADAPTER CODE :
public class Adapter extends PagerAdapter {
private List<Model> models;
private LayoutInflater layoutInflater;
private Context context;
public Adapter(List<Model> models, Context context) {
this.models = models;
this.context = context;
}
#Override
public int getCount() {
return models.size();
}
#Override
public boolean isViewFromObject(#NonNull View view, #NonNull Object object) {
return view.equals(object);
}
#NonNull
#Override
public Object instantiateItem(#NonNull ViewGroup container, int position)
{
layoutInflater = LayoutInflater.from(context);
View view = layoutInflater.inflate(R.layout.item,container,false);
ImageView imageView;
TextView title, desc;
imageView = view.findViewById(R.id.image);
title = view.findViewById(R.id.title);
desc = view.findViewById(R.id.desc);
imageView.setImageResource(models.get(position).getImage());
title.setText(models.get(position).getTitle());
desc.setText(models.get(position).getDesc());
container.addView(view,0);
return view;
}
#Override
public void destroyItem(#NonNull ViewGroup container, int position,
#NonNull Object object) {
container.removeView((View)object);
}
HERE IS MY item.xml CODE :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical">
<androidx.cardview.widget.CardView
android:id="#+id/cardViewLogin"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:cardCornerRadius="20dp"
android:layout_margin="8dp"
android:clickable="true"
android:focusable="true"
android:foreground="?android:attr/selectableItemBackground">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="400dp">
<ImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:src="#drawable/hourglass"
android:layout_height="200dp"
android:scaleType="centerInside"
android:layout_margin="10dp"/>
<TextView
android:id="#+id/title"
android:layout_centerHorizontal="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/image"
android:layout_marginTop="10dp"
android:layout_marginStart="16dp"
android:text="Title"
android:textSize="16sp"/>
<View
android:id="#+id/separator"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#color/cardview_shadow_start_color"
android:layout_margin="10dp"
android:layout_below="#+id/title"/>
<TextView
android:id="#+id/desc"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/separator"
android:layout_marginTop="3dp"
android:layout_marginStart="16dp"
android:layout_marginEnd="16dp"
android:layout_marginBottom="20dp"
android:maxLines="3"
android:drawablePadding="10dp"
android:ellipsize="end"
android:text="Description"
android:textSize="16sp"/>
</RelativeLayout>
</androidx.cardview.widget.CardView>
</LinearLayout>
HERE IS MY XML ACTIVITY LAYOUT CODE :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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=".UserLoginActivity">
<androidx.viewpager.widget.ViewPager
android:id="#+id/view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:foregroundGravity="center"
android:layout_gravity="center"
android:overScrollMode="never"
android:clipToPadding="false">
</androidx.viewpager.widget.ViewPager>
</RelativeLayout>

onClick listener of cardView
cardView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
int pos=viewPager.getCurrentItem();
//used switch case
switch (pos) {
case 0:
//Do whatever you want
break;
case 1:
//Do whatever you want
break;
}
});

ViewPager with FragmentPagerAdapter Not showing Content

I am trying to use Fragment
This is my activity class:
public class InterfaceAct extends FragmentActivity implements View.OnClickListener {
private ViewPager mViewPager;
private List<Fragment> datas;
private ViewPagerFragmentAdapter viewPagerFragmentAdapter;
private LinearLayout mLLHome,mLLTimer,mLLEdit,mLLAbout;
private ImageView mImageViewHome,mImageViewTimer,mImageViewEdit,mImageViewAbout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activiy_interface);
initDatas();// Init Data For Fragments
initView();// Init Component
initEvent();// Sign for Click Listener
viewPagerFragmentAdapter=new ViewPagerFragmentAdapter(getSupportFragmentManager(),datas);// Init Adpater Class
mViewPager.setAdapter(viewPagerFragmentAdapter);
}
private void initDatas() {
datas=new ArrayList<Fragment>();
datas.add(new MyFragment1());
datas.add(new MyFragment2());
datas.add(new MyFragment3());
datas.add(new MyFragment4());
}
private void initEvent() {
mLLHome.setOnClickListener(this);
mLLTimer.setOnClickListener(this);
mLLEdit.setOnClickListener(this);
mLLAbout.setOnClickListener(this);
mViewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {//ViewPager Scrolling Switch Listner
#Override
public void onPageSelected(int arg0) {
int currentItem=mViewPager.getCurrentItem();
resetImag();
switch (currentItem) {
case 0:
mImageViewHome.setImageResource(R.drawable.home_yes);
break;
case 1:
mImageViewTimer.setImageResource(R.drawable.timer_yes);
break;
case 2:
mImageViewEdit.setImageResource(R.drawable.edit_yes);
break;
case 3:
mImageViewAbout.setImageResource(R.drawable.about_yes);
break;
default:
break;
}
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
#Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
private void initView() {
mViewPager = (ViewPager) findViewById(R.id.viewpager);
mLLHome = (LinearLayout) findViewById(R.id.ll_home);
mLLTimer = (LinearLayout) findViewById(R.id.ll_timer);
mLLEdit = (LinearLayout) findViewById(R.id.ll_edit);
mLLAbout = (LinearLayout) findViewById(R.id.ll_about);
mImageViewHome = (ImageView) findViewById(R.id.img_home);
mImageViewTimer = (ImageView) findViewById(R.id.img_timer);
mImageViewEdit = (ImageView) findViewById(R.id.img_edit);
mImageViewAbout = (ImageView) findViewById(R.id.img_about);
}
#Override
public void onClick(View v) {
resetImag();
switch (v.getId()) {
case R.id.ll_home:
mViewPager.setCurrentItem(0);
mImageViewHome.setImageResource(R.drawable.home_yes);
break;
case R.id.ll_timer:
mViewPager.setCurrentItem(1);
mImageViewTimer.setImageResource(R.drawable.timer_yes);
break;
case R.id.ll_edit:
mViewPager.setCurrentItem(2);
mImageViewEdit.setImageResource(R.drawable.edit_yes);
break;
case R.id.ll_about:
mViewPager.setCurrentItem(3);
mImageViewAbout.setImageResource(R.drawable.about_yes);
break;
default:
break;
}
}
private void resetImag() {// Reset Picture
mImageViewHome.setImageResource(R.drawable.home_no);
mImageViewTimer.setImageResource(R.drawable.timer_no);
mImageViewEdit.setImageResource(R.drawable.edit_no);
mImageViewAbout.setImageResource(R.drawable.about_no);
}
}
The ViewPagerFragmentAdapter Looks like this:
public class ViewPagerFragmentAdapter extends FragmentStatePagerAdapter {
private List<Fragment> datas;
public ViewPagerFragmentAdapter(FragmentManager fm,List<Fragment> datas) {
super(fm);
this.datas=datas;
}
#Override
public Fragment getItem(int position) {// Return View Object
return datas.get(position);
}
#Override
public int getCount() {// Return View Num
return datas.size();
}
#Override
public Object instantiateItem(ViewGroup container, int position) {// Init View
return super.instantiateItem(container, position);
}
#Override
public void destroyItem(ViewGroup container, int position, Object object) {// Destroy View
super.destroyItem(container, position, object);
}
}
The layout for the page, it includes a viewpager and also a menu bar in linear layout:
?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="449dp"
android:layout_weight="1"></android.support.v4.view.ViewPager>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="70dp"
android:background="#ffffffff"
android:orientation="horizontal" >
<LinearLayout
android:id="#+id/ll_home"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical" >
<ImageView
android:id="#+id/img_home"
android:layout_width="40dp"
android:layout_height="40dp"
android:background="#0000"
android:src="#drawable/home_yes" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Home"
android:textColor="#b6b3b3" />
</LinearLayout>
<LinearLayout
android:id="#+id/ll_timer"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical" >
<ImageView
android:id="#+id/img_timer"
android:layout_width="40dp"
android:layout_height="40dp"
android:background="#0000"
android:src="#drawable/timer_no" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Timer"
android:textColor="#b6b3b3" />
</LinearLayout>
<LinearLayout
android:id="#+id/ll_edit"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical" >
<ImageView
android:id="#+id/img_edit"
android:layout_width="40dp"
android:layout_height="40dp"
android:background="#0000"
android:src="#drawable/edit_no" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Edit"
android:textColor="#b6b3b3" />
</LinearLayout>
<LinearLayout
android:id="#+id/ll_about"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical" >
<ImageView
android:id="#+id/img_about"
android:layout_width="40dp"
android:layout_height="40dp"
android:background="#0000"
android:src="#drawable/about_no" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="About"
android:textColor="#b6b3b3" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
And This is one of the fragment:
public class MyFragment1 extends Fragment {
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.tab1,null);
}
}
I have four fragment prepared for viewpager(they are basiclly the same but with differnt layout), here is what the tab1 layout might look like:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Chat"
android:textSize="30sp" >
</TextView>
</LinearLayout>
And I only got the menu bar when I run it, the viewpager is not set and I don't know why

Remove android:layout_weight="1" <Viewpager> and add android:orientation="vertical" to Linear layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent">
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="449dp"
></android.support.v4.view.ViewPager>
//-----------

Expanding Listview using Recyclerview inside Scrollview

I tried below code to implement an expend and collapse content using recyclerview(listview) a link
final boolean isExpanded = position==mExpandedPosition;
holder.details.setVisibility(isExpanded?View.VISIBLE:View.GONE);
holder.itemView.setActivated(isExpanded);
if (isExpanded)
previousExpandedPosition = position;
holder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mExpandedPosition = isExpanded ? -1:position;
notifyItemChanged(previousExpandedPosition);
notifyItemChanged(position);
}
});
In my case when i click the particular position in recyclerview its expanding but it goes above the recyclerview.I cant see the full expanded content.i can see only partial content.In this case i need to scroll the recyclerview to view the full content.But i am searching for a solution to view the content without scroll the recyclerview. If i click another position in recyclerview that should be placed over an recyclerview.
Hear is My Code
public class CommonFragment extends Fragment {
#BindView(R.id.news_lists)
RecyclerView news_lists;
#BindView(R.id.nested_scroll)
NestedScrollView nested_scroll;
ArrayList<String> Names;
ArrayList<String> responseProducts = null;
NewsListAdaspters mAdapter;
Context mContext;
String position_name;
public CommonFragment() {
}
public static CommonFragment getInstance(String position, ArrayList<String> response) {
CommonFragment fragmentDummy = new CommonFragment();
Bundle args = new Bundle();
args.putStringArrayList("Types", response);
args.putString("position", position);
fragmentDummy.setArguments(args);
return fragmentDummy;
}
#Override
public void setArguments(Bundle args) {
super.setArguments(args);
this.responseProducts = args.getStringArrayList("Types");
this.position_name = args.getString("position");
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
View view;
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (view != null) {
ViewGroup parent = (ViewGroup) view.getParent();
if (parent != null)
parent.removeView(view);
}
try {
view = inflater.inflate(R.layout.fragment_common, container, false);
ButterKnife.bind(this, view);
} catch (InflateException ignored) {
}
mContext = getActivity();
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getActivity());
news_lists.setLayoutManager(mLayoutManager);
news_lists.setNestedScrollingEnabled(false);
Names = new ArrayList<>();
Names.clear();
for (int i = 0; i < 15; i++) {
Names.add("News Details " + i);
}
Log.e("position_name==>", "" + position_name);
getList();
return view;
}
private void getList() {
if (responseProducts.size() > 0) {
mAdapter = new NewsListAdaspters(mContext, responseProducts, position_name);
news_lists.setAdapter(mAdapter);
}
}
public class NewsListAdaspters extends RecyclerView.Adapter<NewsListAdaspters.MyViewHolder> {
private ArrayList<String> data;
private Context context;
private String name;
int mExpandedPosition = -1;
int previousExpandedPosition = -1;
NewsListAdaspters(Context context, ArrayList<String> maps, String selectedFragmentName) {
this.context = context;
this.data = maps;
this.name = selectedFragmentName;
}
#NonNull
#Override
public MyViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.common_view, parent, false);
final MyViewHolder holder = new MyViewHolder(itemView);
return holder;
}
#Override
public void onBindViewHolder(#NonNull final MyViewHolder holder, #SuppressLint("RecyclerView") final int position) {
holder.news_description.setText(data.get(position));
holder.news_title.setText(name);
final boolean isExpanded = position == mExpandedPosition;
Log.e("isExpanded=====>", "" + isExpanded);
holder.expend_layout.setVisibility(isExpanded ? View.VISIBLE : View.GONE);
holder.itemView.setActivated(isExpanded);
if (isExpanded)
previousExpandedPosition = position;
holder.news_image.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(context, Activity_NewsFullDetails.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
});
holder.expand_click_layout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mExpandedPosition = isExpanded ? -1 : position;
notifyItemChanged(previousExpandedPosition);
notifyItemChanged(position);
}
});
holder.share_fb.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(context, "WORKING!!!!", Toast.LENGTH_SHORT).show();
}
});
holder.share_whatsapp.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(context, "WORKING!!!!", Toast.LENGTH_SHORT).show();
}
});
holder.share_twet.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(context, "WORKING!!!!", Toast.LENGTH_SHORT).show();
}
});
}
#Override
public int getItemCount() {
return data.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder {
#BindView(R.id.news_title)
public TextView news_title;
#BindView(R.id.news_hour)
public TextView news_hour;
#BindView(R.id.news_description)
public TextView news_description;
#BindView(R.id.news_image)
public ImageView news_image;
#BindView(R.id.expand_click_layout)
RelativeLayout expand_click_layout;
#BindView(R.id.expend_layout)
public LinearLayout expend_layout;
#BindView(R.id.full_title)
public TextView full_title;
#BindView(R.id.txt_description)
public TextView txt_description;
#BindView(R.id.share_twet)
public ImageView share_twet;
#BindView(R.id.share_whatsapp)
public ImageView share_whatsapp;
#BindView(R.id.share_fb)
public ImageView share_fb;
MyViewHolder(View view) {
super(view);
ButterKnife.bind(this, view);
}
}
}
}
XML file
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
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:background="#03000000">
<android.support.v4.widget.NestedScrollView
android:id="#+id/nested_scroll"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:fitsSystemWindows="false"
android:focusable="true"
android:focusableInTouchMode="true"
android:scrollbars="none">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:descendantFocusability="blocksDescendants">
<android.support.v7.widget.RecyclerView
android:id="#+id/news_lists"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:nestedScrollingEnabled="false"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</RelativeLayout>
</android.support.v4.widget.NestedScrollView>
ITEM XML
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="#+id/card_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="2dp"
android:animateLayoutChanges="true"
android:background="#drawable/comment_background"
android:stateListAnimator="#animator/comment_selection"
android:elevation="3dp"
card_view:cardCornerRadius="2dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/news_image"
android:layout_width="130dp"
android:layout_height="130dp"
android:layout_margin="2dp"
android:background="#drawable/icon_card"
android:scaleType="fitXY" />
<RelativeLayout
android:id="#+id/expand_click_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/news_image"
android:layout_alignTop="#+id/news_image"
android:layout_toEndOf="#+id/news_image"
android:layout_toRightOf="#+id/news_image">
<TextView
android:id="#+id/news_description"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/bottom_layout"
android:layout_marginEnd="2dp"
android:layout_marginRight="2dp"
android:maxEms="3"
android:maxLines="4"
android:padding="4dp"
android:text=""
android:textColor="#color/black_color"
android:textSize="18sp" />
<RelativeLayout
android:id="#+id/bottom_layout"
android:layout_width="match_parent"
android:layout_height="20dp"
android:layout_alignParentBottom="true"
android:layout_margin="4dp">
<TextView
android:id="#+id/news_hour"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toLeftOf="#+id/center_text"
android:layout_toStartOf="#+id/center_text"
android:maxLines="2"
android:text="Hours"
android:textColor="#color/black_color"
android:textSize="16sp"
android:textStyle="bold" />
<TextView
android:id="#+id/center_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true" />
<TextView
android:id="#+id/news_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toEndOf="#+id/center_text"
android:layout_toRightOf="#+id/center_text"
android:gravity="end"
android:text="News Title"
android:textColor="#color/black_color"
android:textSize="16sp" />
</RelativeLayout>
</RelativeLayout>
<LinearLayout
android:id="#+id/expend_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/news_image"
android:orientation="vertical"
android:visibility="gone">
<TextView
android:id="#+id/full_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="Title Text"
android:textColor="#color/black_color"
android:textSize="20sp" />
<TextView
android:id="#+id/txt_description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="#string/large_text1"
android:textColor="#color/black_color"
android:textSize="18sp" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:orientation="horizontal">
<ImageView
android:id="#+id/share_fb"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="#drawable/share_facebook" />
<ImageView
android:id="#+id/share_whatsapp"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="#drawable/share_whatsapp" />
<ImageView
android:id="#+id/share_twet"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="#drawable/share_tweet" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>

Try to use NestedScrollView instead of ScrollView and set below to your activity :-
recyclerView.setNestedScrollingEnabled(false);
For more information you can refer below stackoverflow links:-
How to use RecyclerView inside NestedScrollView?
Recyclerview inside ScrollView not scrolling smoothly

Android RecyclerView and CardView LayoutManager always crash in Fragment

my app always crash,i try to access a fragment that displays a cardview using RecyclerView.
Here is my Fragment
public class Fragmentone extends Fragment {
private RecyclerView recyclerView;
private List<TestBean> listItem;
private RecyclerAdapter adapter;
public Fragmentone() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_fragmentone, container, false);
recyclerView = (RecyclerView) view.findViewById(R.id.recyclerview);
initData();
adapter = new RecyclerAdapter(listItem,getActivity());
LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
recyclerView.setHasFixedSize(true);
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(adapter);
return view;
}
private void initData() {
listItem = new ArrayList<>();
listItem.add(new TestBean("佛山傻逼酒店","二月17号","二月18号","600","已付款"));
}
}
and this is my adapter
public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ListViewHolder> {
private List<TestBean> listitem;
private Context context;
public RecyclerAdapter(List<TestBean> listitem, Context context) {
this.listitem = listitem;
this.context = context;
}
#Override
public ListViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View v = LayoutInflater.from(context).inflate(R.layout.card_item, viewGroup, false);
ListViewHolder listViewHolder = new ListViewHolder(v);
return listViewHolder;
}
#Override
public void onBindViewHolder(ListViewHolder holder, int i) {
holder.tv_roomfee.setText(listitem.get(i).getRoomfee());
holder.tv_hotelname.setText(listitem.get(i).getHotelname());
holder.tv_liststate.setText(listitem.get(i).getListstate());
holder.tv_checkindate.setText(listitem.get(i).getCheckindate());
holder.tv_lastcheckindate.setText(listitem.get(i).getLastcheckindate());
holder.btn_paynow.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
}
});
holder.btn_cancellist.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
}
});
}
#Override
public int getItemCount() {
return listitem.size();
}
public class ListViewHolder extends RecyclerView.ViewHolder {
CardView id_cardview;
TextView tv_roomfee;
TextView tv_liststate;
TextView tv_hotelname;
TextView tv_checkindate;
TextView tv_lastcheckindate;
Button btn_paynow;
Button btn_cancellist;
public ListViewHolder(final View itemView) {
super(itemView);
id_cardview = (CardView) itemView.findViewById(R.id.id_cardview);
tv_roomfee = (TextView) itemView.findViewById(R.id.tv_roomfee);
tv_liststate = (TextView) itemView.findViewById(R.id.tv_liststate);
tv_hotelname = (TextView) itemView.findViewById(R.id.tv_hotelname);
tv_checkindate = (TextView) itemView.findViewById(R.id.tv_checkindate);
tv_lastcheckindate = (TextView) itemView.findViewById(R.id.tv_lastcheckindate);
btn_paynow.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
}
});
btn_cancellist.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
}
});
}
}
}
and this is my cardview's xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:padding="5dp">
<android.support.v7.widget.CardView
android:id="#+id/id_cardview"
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:clickable="true"
android:elevation="8dp"
app:cardCornerRadius="8dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="#+id/stv_hotelname"
android:layout_width="wrap_content"
android:layout_height="50dp">
<ImageView
android:id="#+id/iv_hotelicon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#mipmap/ic_hotelicon" />
<TextView
android:id="#+id/tv_hotelname"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_toRightOf="#+id/iv_hotelicon"
android:text="佛山精神酒店"
android:textSize="18sp" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/rlay_roomfee"
android:layout_marginTop="30dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_marginRight="30dp">
<TextView
android:id="#+id/stv_roomfee"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="￥"
android:textColor="#F6070C"
android:textSize="18dp" />
<TextView
android:id="#+id/tv_roomfee"
android:layout_toRightOf="#+id/stv_roomfee"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="18sp"
android:textColor="#F6070C"
android:text="400"
/>
</RelativeLayout>
<RelativeLayout
android:layout_below="#+id/rlay_roomfee"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_marginRight="30dp">
<TextView
android:id="#+id/tv_list"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="#+id/tv_liststate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#F6070C"
android:text="待支付"/>
</RelativeLayout>
<RelativeLayout
android:layout_below="#+id/stv_hotelname"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:layout_marginLeft="40dp"
>
<TextView
android:id="#+id/stv_checkindate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="入住时间："/>
<TextView
android:id="#+id/tv_checkindate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#id/stv_checkindate"
android:text="1月10号"/>
<TextView
android:id="#+id/stv_lastcheckindate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/stv_checkindate"
android:text="最晚入住时间："/>
<TextView
android:id="#+id/tv_lastcheckindate"
android:layout_below="#+id/tv_checkindate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#+id/stv_lastcheckindate"
android:text="1月11号"/>
</RelativeLayout>
<RelativeLayout
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<Button
android:id="#+id/btn_cancellist"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="取消订单"/>
<Button
android:id="#+id/btn_paynow"
android:layout_toRightOf="#+id/btn_cancellist"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="立即支付"/>
</RelativeLayout>
</RelativeLayout>
</android.support.v7.widget.CardView>
</RelativeLayout>
when i note
LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
recyclerView.setLayoutManager(layoutManager);
it doesn't crash ,but the cardview does'show

ViewPager in Custom Dialog

I have custom dialog to show which has instruction about how to use the app.I am using ViewPager for this inside my custom dialog layout.
I am getting error
java.lang.IllegalArgumentException: No view found for id for fragment FragmentForInstruction1.
I have created a method which is called in onCreate(Bundle savedInstanceState) {} method .The method inflates the layout for dialog.
private void showCustomDialogForInstruction() {
final Dialog dialog = new Dialog(MainActivity.this);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View dialogLayout = inflater.inflate(R.layout.dialog_layout_for_instruction_message, null, false);
layout.setAlpha(0.2f);
dialog.setCanceledOnTouchOutside(false);
dialog.setContentView(dialogLayout);
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(0));
ViewPager viewPager=(ViewPager) dialog.findViewById(R.id.pagerInstruction);
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(new FragmentForInstruction1());
adapter.addFrag(new Fragme`enter code here`ntForWelcomePage2());
adapter.addFrag(new FragmentForWelcomePage3());
adapter.addFrag(new FragmentForWelcomePage4());
viewPager.setAdapter(adapter);
viewPager.addOnPageChangeListener(new OnPageChangeListener()
{
#Override
public void onPageSelected(int pos)
{
}
#Override
public void onPageScrolled(int pos, float arg1, int arg2)
{
}
#Override
public void onPageScrollStateChanged(int arg0)
{
}
});
Button done = (Button) dialog.findViewById(R.id.done);
done.setText("Got It");
done.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
}
});
Button neverShow = (Button) dialog.findViewById(R.id.nevershow);
neverShow.setText("Never Show Again");
neverShow.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
}
});
dialog.setOnKeyListener(new DialogInterface.OnKeyListener() {
#Override
public boolean onKey(DialogInterface dialog, int keyCode,
KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
return true;
}
return false;
}
});
dialog.getWindow().setBackgroundDrawable(
new ColorDrawable(android.graphics.Color.TRANSPARENT));
dialog.show();
}
my view pager class:
public class ViewPagerAdapter extends FragmentPagerAdapter
{
private final List<Fragment> mFragmentList = new ArrayList<Fragment>();
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 addFrag(Fragment fragment)
{
mFragmentList.add(fragment);
}
}
and i call the method in MainActivity :
public class MainActivity extends AppCompatActivity {
SharedPreferences sharedPreferencesNeverShowAgain ;
boolean neverShowAgain;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sharedPreferencesNeverShowAgain = PreferenceManager.getDefaultSharedPreferences(this);
neverShowAgain = sharedPreferencesNeverShowAgain.getBoolean("NeverShowAgain", false);
if(!neverShowAgain){
showCustomDialogForMessage();
}
}
}
and the layout for dialog is:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/dialog_shape"
android:orientation="vertical" >
<!-- layout title -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="#00000000"
android:gravity="center"
android:orientation="vertical" >
<ViewFlipper
android:id="#+id/flipper"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/top_edge_rounded"
android:flipInterval="2000"
android:padding="20dp" >
<TextView
android:id="#+id/dialog_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#00000000"
android:gravity="center"
android:text="Input Height"
android:textColor="#color/textColor"
android:textStyle="normal" />
<TextView
android:id="#+id/title1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#00000000"
android:gravity="center"
android:text="Input Height"
android:textColor="#color/accent"
android:textStyle="normal" />
</ViewFlipper>
<View
android:id="#+id/tri"
android:layout_width="30dp"
android:layout_height="30dp"
android:background="#drawable/triangle"
android:rotation="180" />
</LinearLayout>
<!-- layout dialog content -->
<ScrollView
android:layout_width="match_parent"
android:layout_height="300dp" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<android.support.v4.view.ViewPager
android:id="#+id/pagerInstruction"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<LinearLayout
android:id="#+id/layoutIndicater"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="10dp"
android:layout_marginTop="10dp"
android:gravity="center"
android:orientation="horizontal" >
</LinearLayout>
</RelativeLayout>
</ScrollView>
<!-- layout dialog buttons -->
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_margin="10dp"
android:background="#drawable/all_rounded_edge_plum_for_dialog" >
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_alignParentTop="true"
android:background="#color/textColor" />
<View
android:id="#+id/ViewColorPickerHelper"
android:layout_width="1dp"
android:layout_height="fill_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:background="#color/textColor" />
<Button
android:id="#+id/nevershow"
android:layout_width="wrap_content"
android:layout_height="48dp"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_toLeftOf="#id/ViewColorPickerHelper"
android:background="?android:attr/selectableItemBackground"
android:padding="5dp"
android:text="Close"
android:textColor="#color/textColor" />
<Button
android:id="#+id/done"
android:layout_width="wrap_content"
android:layout_height="48dp"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_toRightOf="#id/ViewColorPickerHelper"
android:background="?android:attr/selectableItemBackground"
android:padding="5dp"
android:text="Done"
android:textColor="#color/textColor" />
</RelativeLayout>
</LinearLayout>
FragmentForInstruction1 code:
public class FragmentForInstruction1 extends Fragment{
#Override
#Nullable
public View onCreateView(LayoutInflater inflater,
#Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view =inflater.inflate(R.layout.fragmentinstructionpage1, container,false);
return view;
}
}
and its layout is:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#color/backgroundColor"
android:gravity="center" >
<TextView
android:id="#+id/titleWelcomeFragment1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="#color/colorPrimary"
android:textSize="30sp"
android:textStyle="bold"/>
<TextView
android:id="#+id/messageWelcomeFragment1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="#color/colorPrimary"
android:textSize="20sp"
android:textStyle="normal"
android:paddingLeft="20dp"
android:paddingRight="20dp"/>
</LinearLayout>

You should create an adapter that extends FragmentPagerAdapter:
private class CustomPagerAdapter extends FragmentPagerAdapter {
public CustomPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new FragmentForInstruction1();
case 1:
return new FragmentForInstruction2();
case 2:
return new FragmentForInstruction3();
case 3:
return new FragmentForInstruction4();
default:
return new FragmentForInstruction1();
}
}
#Override
public int getCount() {
return 4;
}
}
While crating an instance of it, pass the getChildFragmentManager() instead of getSupportFragmentManager():
viewPager.setAdapter(new CustomPagerAdapter(getChildFragmentManager()));