Collapsing/Expanding view coordinated with Sliding RecyclerView - android

I am trying to achieve the following affect (also see image below):
the app opens with a view (map) partially visible and the RecyclerView at a default anchor point (center image)
user scrolls the RecyclerView up, the map collapses and the list continues scrolling (right image)
user scrolls the RecyclerView down, the map expands to a maximum point (note the list should not slide completely off screen but to some anchored point) (left image)

To create this we need 1 Activity and 3 Fragments.
The Activity will host a TabLayout and a ViewPager like so:
<LinearLayout 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:orientation="vertical">
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar" />
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
Since we only need to do the sliding behavior for the 1st Fragment the first Fragment gets an XML layout like so:
<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:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="400dp"
android:orientation="vertical"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsingToolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<com.google.android.gms.maps.MapView
android:id="#+id/mapView"
app:layout_collapseMode="parallax"
android:layout_height="400dp"
android:layout_width="match_parent" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/content"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</android.support.design.widget.CoordinatorLayout>
You can make the other Fragments however you like I just created fake data and a simple RecyclerView in the other Fragments.
Then call these views in your Activity and Fragment like so:
Activity
public class MainActivity extends AppCompatActivity {
private TabLayout mTabLayout;
private ViewPager mViewPager;
private SampleViewPagerAdapter mViewPagerAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.another_activity);
mTabLayout = (TabLayout) findViewById(R.id.sliding_tabs);
mViewPager = (ViewPager) findViewById(R.id.viewpager);
mViewPagerAdapter = new SampleViewPagerAdapter(getSupportFragmentManager());
mViewPager.setAdapter(mViewPagerAdapter);
mTabLayout.setupWithViewPager(mViewPager);
}
}
ViewPager Adapter
public class SampleViewPagerAdapter extends FragmentPagerAdapter {
public SampleViewPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new MapFragment();
case 1:
return new ScrollFragment();
case 2:
return new ScrollFragment();
default:
return new ScrollFragment();
}
}
#Override
public int getCount() {
return 3;
}
#Override
public CharSequence getPageTitle(int position) {
String[] tabNames = {"Stops", "Planner", "Alerts"};
return tabNames[position];
}
}
Map Fragment with Sliding RecyclerView
public class MapFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View root = inflater.inflate(R.layout.activity_main, null);
initCollapsingToolbar(root);
// Initialize map
initFragment();
return root;
}
private void initCollapsingToolbar(View root) {
CollapsingToolbarLayout collapsingToolbarLayout =
(CollapsingToolbarLayout) root.findViewById(R.id.collapsingToolbar);
collapsingToolbarLayout.setContentScrimColor(getResources().getColor(R.color.cyan_500));
}
private void initFragment() {
FakeDataFragment fragment = new FakeDataFragment();
getChildFragmentManager().beginTransaction()
.replace(R.id.content, scrollFragment)
.commit();
}
}
You should get something like this then:
Setting the position:
You can programmatically collapse the toolbar (CollapsingToolbarLayout) using the following code:
public void collapseToolbar(){
CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) mFrameLayout.getLayoutParams();
AppBarLayout.ScrollingViewBehavior behavior = (AppBarLayout.ScrollingViewBehavior) params.getBehavior();
if (behavior != null) {
behavior.onNestedFling(rootLayout, appbarLayout, null, 0, 10000, true);
}
}
This means when the User first sees the map the map is partially collapsed to your Default State.

I Found Solution for Tabs in CoordinatorLayout
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/htab_maincontent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/htab_appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/htab_collapse_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|enterAlways|snap"
app:statusBarScrim="#null"
app:titleEnabled="false">
<LinearLayout
android:id="#+id/isprofile"
android:layout_width="match_parent"
android:layout_height="180dp"
android:background="#drawable/profile_cover"
android:gravity="center"
app:layout_collapseMode="parallax">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="10dp"
android:gravity="center"
android:orientation="vertical">
<com.root.findagame.utills.CircleImageView
android:id="#+id/profile_pic"
android:layout_width="60dp"
android:layout_height="60dp"
android:background="#drawable/profile_pic" />
<TextView
android:id="#+id/txtUserName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textColor="#color/cpb_white"
android:textSize="#dimen/text_medium_size"
android:textStyle="bold" />
<TextView
android:id="#+id/txtAge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text=""
android:textColor="#color/cpb_white"
android:textSize="#dimen/text_small_size" />
<TextView
android:id="#+id/txtName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text=""
android:textColor="#color/cpb_white"
android:textSize="#dimen/text_small_size"
android:visibility="gone" />
</LinearLayout>
</LinearLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/htab_toolbar"
android:layout_width="match_parent"
android:layout_height="40dp"
android:visibility="gone"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.CollapsingToolbarLayout>
<android.support.design.widget.TabLayout
android:id="#+id/htab_tabs"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_gravity="bottom"
android:background="#color/cpb_white"
app:layout_collapseMode="pin"
app:tabIndicatorColor="#7CC142"
app:tabSelectedTextColor="#7CC142"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:tabTextAppearance="#android:style/TextAppearance.Widget.TabWidget"
app:tabTextColor="#color/lightGrayColor" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/htab_viewpager"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
*Fragment*
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/dummyfrag_bg"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="#+id/dummyfrag_scrollableview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false" />
</FrameLayout>

Related

Could not set the tab titles into the top

I created tabs with ViewPager. But the titles of the tabs are appearing in the center of the screen. I would like to keep the titles on the top of the screen. Please check my following xml codes and java files. Kindly let me know how to fix this issue.
This is the xml file for MainActivity:
<?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/activity_main"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context="com.example.bright.myapplication.MainActivity">
<android.support.design.widget.TabLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerHorizontal="true"
android:id="#+id/tablayout"
android:layout_below="#+id/toolbar">
<android.support.design.widget.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Left" />
<android.support.design.widget.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Center" />
<android.support.design.widget.TabItem
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Right" />
</android.support.design.widget.TabLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
/>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentStart="true"
android:layout_below="#+id/toolbar" />
</RelativeLayout>
The following is the xml file for the first fragment:
fragment_blank_fragment1.xml
<FrameLayout 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.example.bright.myapplication.BlankFragment1">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="hello_blank_fragment 1" />
</FrameLayout>
The following is the xml file for the second fragment:
fragment_blank_fragment2.xml
<FrameLayout 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.example.bright.myapplication.BlankFragment2">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="hello_blank_fragment 2" />
</FrameLayout>
and one more xml file for a fragment
The following is the Activity file:
MainActivity.java
public class MainActivity extends AppCompatActivity {
TabLayout tabLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tabLayout = (TabLayout)findViewById(R.id.tablayout);
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
MyAdapter myAdapter = new MyAdapter(getSupportFragmentManager(),3);
ViewPager viewPager = (ViewPager)findViewById(R.id.viewpager);
viewPager.setAdapter(myAdapter);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
}
}
The following is the place where I am returning the fragments to the main activity through ViewPager:
MyAdapter.java
public class MyAdapter extends FragmentStatePagerAdapter {
int tabcount;
public MyAdapter(FragmentManager fm, int count) {
super(fm);
tabcount = count;
}
#Override
public Fragment getItem(int position) {
switch (position){
case 0:
BlankFragment1 fragment1 = new BlankFragment1();
return fragment1;
case 1:
BlankFragment2 fragment2 = new BlankFragment2();
return fragment2;
case 2:
BlankFragment3 fragment3 = new BlankFragment3();
return fragment3;
default:
return null;
}
}
#Override
public int getCount() {
return tabcount;
}
}
The reason your TabLayout is appearing in the center of the screen is because you have the layout_height set to match_parent. The default gravity of the items within a TabLayout is center_vertical.
I am assuming you want the standard look and feel of tabs as per the Material Design Guidelines, in which case the layout file for your MainActivity should look more like this:
<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="wrap_content">
<android.support.design.widget.AppBarLayout android:id="#+id/app_bar"
android:layout_width="match_parent" android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar android:id="#+id/toolbar"
android:layout_width="match_parent" android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary" app:popupTheme="#style/AppTheme.PopupOverlay/>
<android.support.design.widget.TabLayout android:id="#+id/tab_layout"
android:layout_width="match_parent" android:layout_height="wrap_content"
app:tabIndicatorColor="?attr/colorAccent">
<android.support.design.widget.TabItem
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="#string/tab_left"/>
<android.support.design.widget.TabItem
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="#string/tab_center"/>
<android.support.design.widget.TabItem
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="#string/tab_right"/>
</android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.ViewPager android:id="#+id/pager"
android:layout_width="match_parent" android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</android.support.design.widget.CoordinatorLayout>
Also, there is a convenience method for setting up tabs with a ViewPager, instead of calling viewPager.setOnPageChangeListener():
tabLayout.setupWithViewPager(viewPager);

ViewPager inside ScrollView not working

I want to put a ViewPager inside a CoordinatorLayout withing a NestedScrollView. The viewpager houses 3 fragments.
Problem is the fragments aren't visible. Tabs show up and the rest of the layout is visible and scrolls accordingly.
Below is the code for my layout:
<?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:fitsSystemWindows="true"
android:orientation="vertical">
<include layout="#layout/toolbar" />
<android.support.design.widget.CoordinatorLayout
android:id="#+id/coordinatorLayout"
android:layout_below="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/DarkBodyBackground"
android:fitsSystemWindows="true"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="500dp"
android:background="#color/DarkBodyBackground"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginEnd="64dp"
app:expandedTitleMarginStart="48dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<include layout="#layout/artist_header" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<include layout="#layout/loading_indicator" />
<android.support.design.widget.TabLayout
android:id="#+id/tabLayout"
style="#style/TabLayoutStyle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_scrollFlags="scroll|enterAlways"
app:tabGravity="fill"
app:tabMode="fixed" />
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="gone" />
</RelativeLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
</RelativeLayout>
Try adding this piece of code before loading your viewPager
NestedScrollView scrollView = (NestedScrollView) findViewById (R.id.nest_scrollview);
scrollView.setFillViewport (true);
Let me know if it helped fix the issue.
Use android:fillViewport="true" in ScrollView
The accepted answer resulted in my fragments now being visible. However, it left me with the problem that my NestedScrollView would no longer scroll!
To overcome this, I have created a custom ViewPager (based on this article) that calculates it's height in the required manner.
Here is full code for my CustomViewPager:
package org.example;
import android.content.Context;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.view.View;
public class CustomViewPager extends ViewPager {
public CustomViewPager(#NonNull Context context) {
super(context);
}
public CustomViewPager(#NonNull Context context, #Nullable AttributeSet attrs) {
super(context, attrs);
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
try {
int numChildren = getChildCount();
for (int i = 0; i < numChildren; i++) {
View child = getChildAt(i);
if (child != null) {
child.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
int h = child.getMeasuredHeight();
heightMeasureSpec = Math.max(heightMeasureSpec, MeasureSpec.makeMeasureSpec(h, MeasureSpec.EXACTLY));
}
}
}
catch (Exception e) {
e.printStackTrace();
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
In your layout xml, you'd then just replace android.support.v4.view.ViewPager with org.example.CustomViewPager.
(I also removed the new android:fillViewport="true" attribute from my NestedScrollView element as it seems this is now no longer needed.)
No need to use ScrollView and NestedScroolview Just use SliderLayout it will work perfectly.
add below dependency inside build.gradle (app level)
implementation 'ru.noties:scrollable:1.3.0'
layout
<?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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/cardview_light_background"
android:fitsSystemWindows="true"
android:orientation="vertical">
<include layout="#layout/toolbar" /> <!-- its toolbar -->
<ru.noties.scrollable.ScrollableLayout
android:id="#+id/scrollable_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:scrollable_autoMaxScroll="true"
app:scrollable_defaultCloseUp="true">
<!-- what ever you want you can add here, its like tabs header part -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="1">
<ImageView
android:id="#+id/imageViewProfilePic"
android:layout_width="match_parent"
android:layout_height="60dp"
android:layout_gravity="center"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:layout_weight=".75"
android:src="#drawable/hashtag" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="10dp"
android:layout_marginRight="10dp"
android:layout_marginBottom="10dp"
android:layout_weight=".25"
android:orientation="vertical">
<TextView
android:id="#+id/textviewTagName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="5dp"
android:fontFamily="#font/roboto_medium"
android:text=""
android:textColor="#000"
android:textSize="12sp"
android:textStyle="bold" />
/>
<TextView
android:id="#+id/textViewNoofPosts"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/textviewFollow"
android:layout_marginLeft="5dp"
android:fontFamily="#font/roboto"
android:text="(University name)"
android:textSize="11dp" />
</LinearLayout>
</LinearLayout>
<!--
<ru.noties.scrollable.sample.SampleHeaderView
style="#style/HeaderStyle"
app:shv_title="#string/sample_title_fragment_pager"/>
-->
<android.support.design.widget.TabLayout
android:id="#+id/tablayout"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="bottom|center_horizontal|center_vertical"
app:tabIndicatorColor="#color/appcolor"
app:tabMode="fixed"
app:tabSelectedTextColor="#color/appcolor" />
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="?attr/actionBarSize" />
</ru.noties.scrollable.ScrollableLayout>
</LinearLayout>
Activity code:
public class TabActivity extends AppCompatActivity {
TabLayout tabLayout;
private SectionsPagerAdapter mSectionsPagerAdapter;
private ViewPager mViewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tab);
Toolbar mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);//back arrow on toolbar
getSupportActionBar().setDisplayShowTitleEnabled(false);
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
mViewPager = (ViewPager) findViewById(R.id.viewpager);
mViewPager.setAdapter(mSectionsPagerAdapter);
tabLayout = (TabLayout) findViewById(R.id.tablayout);
tabLayout.setupWithViewPager(mViewPager);
}
#Override
public boolean onOptionsItemSelected(MenuItem menuItem) {
if (menuItem.getItemId() == android.R.id.home) {
onBackPressed();
}
}
#Override
public void onBackPressed() {
this.finish();
super.onBackPressed();
}
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
return new frag1();
case 1:
return new frag2();
}
return null;
}
#Override
public int getCount() {
// Show 2 total pages.
return 2;
}
#Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "one";
case 1:
return "two";
}
return null;
}
}
}
Use nestedScrollview and set the property of nestedscrollenabled as true and I think you will do it.
So let me do it for you : the correct hierarchy as suggested by google blogspot it is working fine for me:Check this out
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:id="#+id/cl_parent"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="256dp"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="#+id/img_backdrop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:fitsSystemWindows="true"
android:src="#drawable/coverimage"
app:layout_collapseMode="parallax" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:tabGravity="center"
android:layout_gravity="bottom"
app:tabMode="scrollable"
app:tabContentStart="72dp" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_collapseMode="pin">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/my_cloud_tv"
android:textColor="#fff"
android:textSize="18sp" />
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</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" />
let me know if it helps

How do I make my Fragment layout fit under the tabs created in main Activity?

I have a problem which seems to have a different solution everytime it is asked, and causing me great distress. I have tried to use the solutions in other SO questions, but none worked.
I have an Activity from which initializes a ViewPager, a toolbar and a TabLayout. There are two tabs, both of which are implemented using fragments. The problem is
that my fragment is layed out with a spinner, a recycler view, a button and a textfield. Of these widgets, only the recyclerView shows up with the first two items missing,
forcing me to believe the Spinner is hidden just behind my AppLayoutBar, and the textField and buttons are below the screen. My question is, how do I get the layout
of my fragment to appear in the visible part of the screen below the tabs? Below are the Layout files for both fragment and main activity
Fragment:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/header"
>
<Spinner
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/spinner"
android:entries="#array/status"
>
</Spinner>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/list"
android:paddingTop="20dp"
android:layout_below="#+id/spinner"
android:layout_above="#+id/editText"
/>
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.75"
android:inputType="textMultiLine"
android:id="#+id/editText"
android:hint="#string/goal_edit_text_hint"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:maxLines="5"
android:minLines="1"
android:scrollHorizontally="false"
android:layout_alignParentStart="true"
android:layout_toLeftOf="#+id/addButton"
android:layout_toStartOf="#+id/addButton" />
<Button
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="#string/add_button_text"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:textAppearance="?android:textAppearanceLarge"
android:layout_alignParentEnd="true"
android:drawableLeft="#drawable/math"
android:id="#+id/addButton" />
</RelativeLayout>
Main Activity
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto">
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="612dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:layout_gravity="center" />
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/header"
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"
android:popupTheme="#style/ThemeOverlay.AppCompat.Light">
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="fixed"
app:tabGravity="fill"
/>
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
For a Detail Tutorial Have a look At
Dear I can understand your problem and I have a solution for you that will work perfectly. I'm giving complete piece of code that will solve your issue.
Step - 1: Paste this XML in your Main Activity layout.
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.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"
android:fitsSystemWindows="true"
tools:context="com.broadpeakit.hmehmood.company.HomeActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.CustonActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:titleTextColor="#color/white"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_home" />
</android.support.design.widget.CoordinatorLayout>
Step 2 - Crate another layout with named content_home. and paste this code there.
<?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"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.broadpeakit.hmehmood.company.HomeActivity"
tools:showIn="#layout/app_bar_home">
<FrameLayout
android:id="#+id/fl_testing"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"></FrameLayout>
</RelativeLayout>
Step 3 - Now Create another layout with name viewPager_fragment that will contain your view pager with tabs and we'll inflate this layout later.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:paddingLeft="0dp"
android:paddingRight="0dp"
android:paddingTop="0dp"
android:paddingBottom="0dp">
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/toolbar"
android:background="#color/blue"
app:tabTextColor="#color/white"
app:tabSelectedTextColor="#color/gray"
app:tabIndicatorColor="#color/red"
android:elevation="6dp"
android:minHeight="?attr/actionBarSize"/>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_below="#id/tabs"/>
</RelativeLayout>
Step 4 - Now create a class with name viewPagerFragment and extends it with Fragment. we'll inflate this Fragment later in your Main Activity.
public class viewPagerFragment extends Fragment {
private TabLayout tabLayout;
private ViewPager viewPager;
TabsTestFragment1 tabsTestFragment1;
TabsTestFragment2 tabsTestFragment2;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
// Inflate the layout for this fragment
setHasOptionsMenu(true);
return inflater.inflate(R.layout.viewPager_fragment, container, false);
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
((HomeActivity)getActivity()).updateDrawerIcon();
tabsTestFragment1 = new TabsTestFragment1();
tabsTestFragment2 = new TabsTestFragment1();
viewPager = (ViewPager) view.findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout)view.findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
public void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getChildFragmentManager());
adapter.addFragment(tabsTestFragment1, "Tab 1");
adapter.addFragment(tabsTestFragment2, "Tab 2");
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);
}
}
}
Step 5 - Now place this code in onCreate of your Main Activity.
getSupportFragmentManager().beginTransaction().setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN).replace(R.id.fl_testing, new viewPagerFragment()).commit();
Now you are good to RUN your code. Get back to me if you have any issue later. Also mark this issue as solved if you are able to solve your issue using this code. Happy Coding :)
Change your Main Activity with this one
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/tabanim_maincontent"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/header"
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|snap"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
<android.support.design.widget.TabLayout
android:id="#+id/tabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</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>

Android does not show tabs

I am in a process of changing home activity to include tabs. I use https://github.com/saulmm/CoordinatorExamples as a source. For unknown reason I do not see the tabs in my AppBarLayout. I can see the Fragment content but tab headers are not displayed at all. I use appcompat-v7:23.3.0.
Shortened layout:
<android.support.design.widget.CoordinatorLayout
<android.support.design.widget.AppBarLayout
<android.support.design.widget.CollapsingToolbarLayout
<ImageView ..
<android.support.v7.widget.Toolbar ..
</android.support.design.widget.CollapsingToolbarLayout>
<android.support.design.widget.TabLayout
android:id="#+id/main.tabs"
android:layout_width="fill_parent"
android:layout_height="?attr/actionBarSize"
app:tabSelectedTextColor="?android:attr/textColorPrimaryInverse"
app:tabIndicatorColor="?android:attr/textColorPrimaryInverse"
app:tabIndicatorHeight="4dp" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/dashboard.viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
/>
Activity:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_dashboard);
CollapsingToolbarLayout collapsingToolbarLayout = (CollapsingToolbarLayout) findViewById(R.id.main_collapsing);
collapsingToolbarLayout.setTitle(getString(R.string.app_name));
ViewPager viewPager = (ViewPager) findViewById(R.id.dashboard_viewpager);
viewPager.setAdapter(new TabsAdapter(getSupportFragmentManager()));
TabLayout tabLayout = (TabLayout) findViewById(R.id.main_tabs);
tabLayout.setupWithViewPager(viewPager);
}
class TabsAdapter extends FragmentPagerAdapter {
public TabsAdapter(FragmentManager fm) {
super(fm);
}
public int getCount() {
return 1;
}
public Fragment getItem(int i) {
switch(i) {
case 0: return DashboardHomeFragment.newInstance();
}
return null;
}
public CharSequence getPageTitle(int position) {
return "Home";
}
}
Fragment:
public class DashboardHomeFragment extends Fragment implements View.OnClickListener {
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_dashboard_home, container, false);
}
public void onActivityCreated(#Nullable Bundle state) {
log.debug("onActivityCreated()");
super.onActivityCreated(state);
}
and its layout:
<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="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Hry"
android:textAppearance="#style/TextAppearance.Header"
android:paddingRight="8dp"
android:paddingLeft="8dp"
style="#style/TextComponent.ItemRow"/>
<TextView
android:id="#+id/main.button.puzzle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Najdi výsledek"
android:textAppearance="#style/TextAppearance.Item"
android:drawableRight="#drawable/ic_arrow_forward_24dp"
style="#style/TextComponent.ItemRow.Selectable"/>
There is a second problem but I will post it in separate question linked to this question.
Update:
It was caused by CoordinatorLayout misconfiguration. I changed:
android:layout_height="150dp"
to
android:layout_height="wrap_content"
and the tabs appeared suddenly.
According to the guidelines of Android and the material design, it is correct to use the coordinatorLayout.
The appBarLayout should be max 256dp and inside we find the toolbar and the views that you need.
If you want the views collapsing insert into collapsingToolbarLayout.
If you want the toolbar expandable will be inserted inside the collapsingToolbarLayout.
The tabLayout often is insert into appBarLayout but out collapsingToolbarLayout.
The sum of views height is equals at appBarLayout height (or use wrap_content for appBarLayout).
This is an example of expandable toolbar with tabLayout, in this case appBarLayout has a fixed height but you can use wrap_content.
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="256dp"
android:fitsSystemWindows="true"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="202dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:contentScrim="#color/your_color"
android:fitsSystemWindows="true">
<--Your views-->
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:gravity="top"
app:titleMarginTop="13dp"
android:minHeight="?attr/actionBarSize"
app:popupTheme="#style/AppTheme.PopupOverlay"
app:layout_collapseMode="pin"
/>
</android.support.design.widget.CollapsingToolbarLayout>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="bottom"
android:background="#color/your_color"
app:tabSelectedTextColor="#color/your_color"
app:tabTextColor="#color/your_color"
app:tabIndicatorColor="#color/your_color"
app:tabMode="fixed"
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>

Problems with the scrolling in a expandable list view inside a viewpager - Android

I have an aplication with a toolbar and an tab layout in appcompat v7. I navegate across the tabs with a View Pager, but the problem is where put an Expandable List View inside, doesn't scroll: this is my Java code from the principal activity
The minimal API is 15: Android Ice Cream Sandwicth 4.0.4
public class Principal extends AppCompatActivity{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_principal);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
final TabLayout Tabulacion = (TabLayout) findViewById(R.id.Tabulacion);
final ViewPager viewPager = (ViewPager) findViewById(R.id.Pager);
final PagerAdapter adapter = new PagerAdapter(getSupportFragmentManager(), Tabulacion.getTabCount());
viewPager.setAdapter(adapter);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(Tabulacion));
Tabulacion.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
}
the Java code from the PagerAdapter
public class PagerAdapter extends FragmentStatePagerAdapter {
int intNumTabs;
public PagerAdapter(FragmentManager FM, int NumTabs) {
super(FM);
this.intNumTabs = NumTabs;
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
TabHome Tab1 = new TabHome();
return Tab1;
case 1:
TabLectura Tab2 = new TabLectura();
return Tab2;
default:
return null;
}
}
#Override
public int getCount() {
return intNumTabs;
}
}
the XML code from the principal activity
<android.support.design.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"
android:fitsSystemWindows="true"
tools:context=".Principal">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay"
android:id="#+id/textView">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
<android.support.design.widget.TabLayout
android:id="#+id/Tabulacion"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TabItem
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Inicio">
</android.support.design.widget.TabItem>
<android.support.design.widget.TabItem
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Lectura">
</android.support.design.widget.TabItem>
</android.support.design.widget.TabLayout>
<android.support.v4.view.ViewPager
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/Pager"
android:isScrollContainer="true"
android:nestedScrollingEnabled="true"
android:background="#color/backgroundColor" />
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
the XML code from the tab 2 fragment:
<ExpandableListView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/ListView">
</ExpandableListView>
The content of the Expandable List View is dynamic generated
I solve it! I extract the view pager from the app coordinator layout in the XML, there is the final 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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".Principal">
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay"
android:id="#+id/textView">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
<android.support.design.widget.TabLayout
android:id="#+id/Tabulacion"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TabItem
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Inicio">
</android.support.design.widget.TabItem>
<android.support.design.widget.TabItem
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Lectura">
</android.support.design.widget.TabItem>
</android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
<android.support.v4.view.ViewPager
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/Pager"
android:background="#color/backgroundColor" />
</LinearLayout>
Use a recyclerview instead of listview. I have implemented it in a view pager and it works perfectly. Recyclerview does virtually everything that a listview does and much more.

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