Little, but annoying problem:
I've made a tabbed Activity, where the tabs contain a ListView. However, if I set the ViewPager's dimensions to match_parent, everything seems to be fine, BUT, at the bottom, the ViewPager's egde goes out of the screen.
Like this: link
Result: link
Layout:
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="de.gymoth.goapp.vertretungsplan.VertretungsplanActivityNew">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="#dimen/appbar_padding_top"
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"
app:layout_scrollFlags="scroll|enterAlways">
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
Java:
public class VertretungsplanActivityNew extends AppCompatActivity {
private VertretungsplanFragment firstFragment;
private VertretungsplanFragment secondFragment;
private TabLayout tabLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_vertretungsplan);
firstFragment = VertretungsplanFragment.newInstance(0);
secondFragment = VertretungsplanFragment.newInstance(1);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
SectionsPagerAdapter sectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
ViewPager viewPager = (ViewPager) findViewById(R.id.container);
viewPager.setAdapter(sectionsPagerAdapter);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
switch(position) {
case 0:
return firstFragment;
case 1:
return secondFragment;
default:
return null;
}
}
#Override
public int getCount() {
return 2;
}
#Override
public CharSequence getPageTitle(int position) {
return "";
}
}
public void setTabTitle(int index, CharSequence title) {
tabLayout.getTabAt(index).setText(title);
}
}
Does anyone have an explanation for this? Any help is appreciated.
Replace CoordinatorLayout with LinearLayout, then it will work fine. I added sample code bellow.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
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:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay">
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</LinearLayout>
Roshan's answer is good unless you will need the functionality of CoordinatorLayout.
In that case you can do a simple workaround:
<android.support.v4.view.ViewPager
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="48dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
Related
i am working on a android project where i have to implement collapsing toolbar with tabs . Tabs should contain a normal Relative layout which has 4 textview.
I am successfully able to implement the collapsing toolbar but the problem is when ever i try to scroll upwards holding the tabs i have implemented collapse toolbar is not working. On the same tabs if i use a list view or Grid layout its working fine when i scroll. If i try to use Normal layout's such as Linear or Relative layout i am not able to scroll. is there any way i can fix this without list or grid layout?
below is my code for 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:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
style="#style/MyStyle"
android:layout_width="match_parent"
app:tabIndicatorColor="#F21757"
app:tabSelectedTextColor="#F21757"
android:layout_height="?actionBarSize"
app:tabTextColor="#android:color/white"
app:layout_anchor="#+id/MyAppbar"
app:layout_anchorGravity="bottom"
android:layout_gravity="bottom"
app:tabGravity="fill"
app:tabMode="scrollable"
android:background="#171C20" />
<android.support.design.widget.AppBarLayout
android:id="#+id/MyAppbar"
android:layout_width="match_parent"
android:layout_height="256dp"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
>
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapse_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:contentScrim="#000000"
android:fitsSystemWindows="true">
<ImageView
android:id="#+id/bgheader"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/load"
android:fitsSystemWindows="true"
app:layout_collapseMode="parallax"
/>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"
app:layout_collapseMode="pin"
/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewPager"
android:paddingBottom="20dp"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="?attr/actionBarSize"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
Try this
Step 1. main_activity.xml
<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:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.ncrypted.demoapplications.MainActivity">
<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/collapsingToolBar_hotel_details"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginEnd="64dp"
app:expandedTitleMarginStart="48dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="#+id/img_hotel_details"
android:layout_width="match_parent"
android:layout_height="300dp"
android:contentDescription="#string/strong_image_of_andorid"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
android:src="#mipmap/ic_launcher"
app:layout_collapseMode="parallax" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolBar_hotel_detail"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Light"
app:layout_scrollFlags="scroll|enterAlways">
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_collapseMode="pin"
app:tabGravity="fill"
app:tabMode="fixed" />
</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.v4.view.ViewPager>
Step:2 Create fragments activity
- FragmentActivity1
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"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="com.ncrypted.demoapplications.FragmentActivity1">
<!-- TODO: Update blank fragment layout -->
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="#string/hello_blank_fragment1" />
FragmentActivity.java
public class FragmentActivity1 extends Fragment {
public FragmentActivity1()
{
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState)
{
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_fragment_activity1, container, false);
}
}
Step:3 take two other Fragment 2,3 and write code as above
Step:4 MainActivity.java
public class MainActivity extends AppCompatActivity {
private ViewPager pager;
private TabLayout tabLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolBar_hotel_detail);
setSupportActionBar(toolbar);
ViewCompat.setTransitionName(findViewById(R.id.app_bar_layout), "Extra Image");
CollapsingToolbarLayout collapsingToolbarLayout = (CollapsingToolbarLayout)
findViewById(R.id.collapsingToolBar_hotel_details); collapsingToolbarLayout.setContentScrimColor(ContextCompat.getColor(getApplicationContext(), R.color.colorPrimary));
collapsingToolbarLayout.setTitle("Collaps");
pager = (ViewPager) findViewById(R.id.viewPager);
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new FragmentActivity1());
adapter.addFragment(new FragmentActivity2());
adapter.addFragment(new FragmentActivity3());
pager.setAdapter(adapter);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(pager);
tabLayout.getTabAt(0).setText("Tab1");
tabLayout.getTabAt(1).setText("Tab2");
tabLayout.getTabAt(2).setText("Tab3");
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = 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) {
mFragmentList.add(fragment);
}
}
}
Good Day ! I'm currently creating an android app. My first problem is, Im getting a problem with my TabLayout. I want to display the tablayout IN the Toolbar...
This is my MainActivity:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Create the adapter that will return a fragment for each section
mPagerAdapter = new FragmentPagerAdapter(getSupportFragmentManager()) {
private final Fragment[] mFragments = new Fragment[] {
new MyPostsFragment(),
new MyPostsFragment(),
new MyPostsFragment(),
};
private final String[] mFragmentNames = new String[] {
getString(R.string.heading_recent),
getString(R.string.heading_recent),
getString(R.string.heading_recent)
};
#Override
public Fragment getItem(int position) {
return mFragments[position];
}
#Override
public int getCount() {
return mFragments.length;
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentNames[position];
}
};
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.container);
mViewPager.setAdapter(mPagerAdapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(mViewPager);
// Button launches NewPostActivity
findViewById(R.id.fab_new_post).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(MainActivity.this, NewReportActivity.class));
}
});
}
And this is the Layout:
<?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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".activities.MainActivity">
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<android.support.v4.view.ViewPager
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/tabs" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab_new_post"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:src="#drawable/ic_add_new_report"
android:layout_margin="16dp"/>
</RelativeLayout>
extending your theme to parent="Theme.AppCompat.Light.NoActionBar" will do the trick
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
By adding this, you're telling the system To not to use ActionBar.
You can simply hide the Toolbar to achieve what you want.
Dynamically:
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
or through Styles:
android:theme="#android:style/Theme.Holo.Light.NoActionBar.Fullscreen"
Try this, I am able to add tab inside toolbar using the below code.
<android.support.design.widget.AppBarLayout
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/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabTextColor="#android:color/white"
app:tabSelectedTextColor="#color/aqua_marine"
app:tabIndicatorColor="#color/aqua_marine"
app:tabMode="fixed"
app:tabGravity="fill">
</android.support.design.widget.TabLayout>
</android.support.v7.widget.Toolbar>
</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" />
<include layout="#layout/content_home" />
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>
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.
I use android.support:design library for NavigationDrawer and Tabs.
I have a trouble in fragment with tabs, it's shadow beetwen Toolbar and Tabs.
Tabs fragment screenshot
MainActivity 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"
android:id="#+id/coordinate"
tools:context="tabs.com.tabs.com.fragments.items">
<android.support.design.widget.AppBarLayout
android:id="#+id/appBar"
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.AppBarLayout>
<include layout="#layout/content_main" />
</android.support.design.widget.CoordinatorLayout>
Fragment tabs layout:
<LinearLayout 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"
tools:context="tabs.com.tabs.com.fragments.items"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:id="#+id/appBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay"
android:duplicateParentState="true">
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
app:tabGravity="fill"
app:tabMode="fixed"
android:background="#color/colorPrimary"
app:tabIndicatorColor="#color/white"
app:tabSelectedTextColor="#color/white"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:elevation="6dp">
</android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v4.view.ViewPager>
</LinearLayout>
Tabs code:
public class Items extends Fragment {
public static TabLayout tabLayout;
public static ViewPager viewPager;
public static int int_items = 2;
public Items() {
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View x = inflater.inflate(R.layout.fragment_news,null);
tabLayout = (TabLayout) x.findViewById(R.id.tabs);
viewPager = (ViewPager) x.findViewById(R.id.viewpager);
viewPager.setAdapter(new MyAdapter(getChildFragmentManager()));
tabLayout.post(new Runnable() {
#Override
public void run() {
tabLayout.setupWithViewPager(viewPager);
}
});
return x;
}
class MyAdapter extends FragmentPagerAdapter{
public MyAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position)
{
switch (position){
case 0 : return new PrimaryFragment();
case 1 : return new SocialFragment();
}
return null;
}
#Override
public int getCount() {
return int_items;
}
#Override
public CharSequence getPageTitle(int position) {
switch (position){
case 0 :
return "ONE";
case 1 :
return "TWO";
}
return null;
}
}
}
How i can solve this trouble?
You can try setting same value for Elevation to both the TabLayout and ActionBar, as the ToolBar is 6dp elevated so it is casting its shadow over Tabs.
Set android:elevation="6dp" to ToolBar as it is in TabLayout.
For those who are using AppCompatActivity it is easy too, just set elevation like,
getSupportActionBar().setElevation(0);
=============================Update================================
1)
Another approach is that u make a layout having shadow part inside drawable and use it below your Tabs in XML designing.
In res/drawable/shadow.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<gradient
android:startColor="#android:color/transparent"
android:endColor="#33000000"
android:angle="90">
</gradient>
Now use it as
<View
android:layout_width="match_parent"
android:layout_height="8dp"
android:layout_below="#id/TabLayoutID"
android:background="#drawable/shadow" />
In your main XML containing TabLayout.
2)
Or just Add this line in your style(s): if above way doesn't work.
<item name="android:windowContentOverlay">#drawable/shadow</item>
Hope, i have helped..!
To remove the shadow of toolbar add this to your app theme:
<item name="android:windowContentOverlay">#null</item>
And You use design-support library so you have to also add below line code.
getSupportActionBar().setElevation(0);