Develop Reference

How to centre a string in toolbar fragment?

I have the following part of XML which generates a toolbar in my profile fragment with a black background and profile written in it.
I'm trying though to center the profile but nothing seems to work. Any suggestions?
<fragment
android:id="#+id/navigation_home"
android:name="com.example.myapp_android.ui.home.HomeFragment"
android:label="#string/title_home"
tools:layout="#layout/fragment_home" />
I tried adding to the <fragment android:label_gravity = "center" and android:gravity = "center"
but none of them moved the profile text.

Toolbars can have childview so you can use TextView inside of a toolbar
Use this :
<androidx.appcompat.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/toolbar"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Toolbar"
android:textSize="20sp"
android:textStyle="bold"/>
</androidx.appcompat.widget.Toolbar>

Custom Tab's text is not highlighted in the Tablayout

I have made a CustomView for the tabs in the TabLayout that contains aTextViewfor the tab title andImageViewfor the icons
But when I click on a tab, the text for the selected tab is not highlighted!
I have tried every combination of XML attributes for the tablayout wigdet and nothing is working out. I tried to Google the problem, but couldn't find any solutions.
MainActivity.class
The implemeneation of the Tablayoyut with custom view.
mainTablayout = (TabLayout) findViewById(R.id.tablayout_activity_main);
mainViewpager = (ViewPager) findViewById(R.id.main_viewpager);
mainTablayout.addTab(mainTablayout.newTab().setText("Search"));
mainTablayout.addTab(mainTablayout.newTab().setText("Inbox"));
mainTablayout.addTab(mainTablayout.newTab().setText("Edit"));
mainTablayout.addTab(mainTablayout.newTab().setText("Profile"));
mainTablayout.getTabAt(0).setCustomView(R.layout.custom_tablayout).setIcon(R.drawable.ic_search);
mainTablayout.getTabAt(1).setCustomView(R.layout.custom_tablayout).setIcon(R.drawable.ic_tab_envelope);
mainTablayout.getTabAt(2).setCustomView(R.layout.custom_tablayout).setIcon(R.drawable.ic_tab_cogwheel);
mainTablayout.getTabAt(3).setCustomView(R.layout.custom_tablayout).setIcon(R.drawable.ic_tab_profile_1);
mainViewpager.setAdapter(new MainPagerAdapter(getSupportFragmentManager()));
mainViewpager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(mainTablayout));
mainTablayout.addOnTabSelectedListener(this);
custom_tablayout.xml:
The layout for the custom tabs
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="#android:id/icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal" />
<TextView
android:textSize="12sp"
android:textStyle="bold"
android:id="#android:id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="-6dp" />
</LinearLayout>
activity_main.xml:
This is the attribute used on the Tablayout wigdet
<android.support.design.widget.TabLayout
android:id="#+id/tablayout_activity_main"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"
android:layout_alignParentBottom="true"
android:layout_below="#id/tablayout_activity_main"
android:background="#f5f5f5"
app:tabGravity="fill"
app:tabIndicatorHeight="0dp"
app:tabMode="fixed"
app:tabTextColor="#color/tab_off"
app:tabSelectedTextColor="#color/colorPrimary" />

You could try to select the tab through the tab-layout.
I'm using com.android.support:design:23.2.1 support library.Using below code you can highlight selected tab.
tabLayout.getTabAt(0).select();
You can refer following link: https://guides.codepath.com/android/google-play-style-tabs-using-tablayout

Transparent bottom sheet layout in Android

I am trying to make a transparent bottom sheet layout, that would allow me to see the contents of the view below it. The bottom sheet is working as expected, however when I set the background to either #null or #android:color/transparent, the layout's view is white, as opposed to transparent. My layout is as follows:
app_bar_main.xml:
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/coordinatorLayout"
android:background="#android:color/transparent"
android:fitsSystemWindows="true"
tools:context=".core.activities.MainActivity">
<!-- stuff here -->
<LinearLayout
android:id="#+id/bottom_sheet"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:background="#null"
android:orientation="vertical"
app:layout_behavior="#string/bottom_sheet_behavior">
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
The linear layout with id bottom_sheet holds, well, my bottom sheet. The sheet itself is defined as follows:
<?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:layout_width="match_parent"
android:background="#null"
android:layout_height="match_parent">
<LinearLayout android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#null"
android:orientation="vertical">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/bottom_sheet_placeholder_layout"
android:layout_weight="0.6"
android:layout_width="match_parent"
android:background="#null"
android:layout_height="50dp"
android:orientation="horizontal">
</LinearLayout>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/bottom_sheet_layout"
android:layout_margin="0dp"
android:layout_weight="0.4"
android:layout_width="match_parent"
android:background="#color/my_background"
android:layout_height="wrap_content"
android:orientation="vertical">
<ProgressBar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:id="#+id/my_progress_bar" />
<TextView
android:layout_marginTop="5dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Large Text"
android:textColor="#color/my_text"
android:id="#+id/txt_my_info"
android:layout_gravity="center_horizontal"
android:visibility="gone"
android:textSize="48px" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Medium Text"
android:id="#+id/txt_my_address"
android:textColor="#color/my_secondary_text"
android:visibility="gone"
android:layout_gravity="center_horizontal" />
</LinearLayout>
</LinearLayout>
<android.support.design.widget.FloatingActionButton
android:id="#+id/btn_edit_tree_info"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:layout_marginTop="-62dp"
android:elevation="100dp"
android:src="#drawable/ic_create_black_24dp"
app:layout_anchor="#id/bottom_sheet_layout"
app:layout_anchorGravity="top|end|right"
app:useCompatPadding="true"/>
</android.support.design.widget.CoordinatorLayout>

The answer is much more easier: just add this line
myDialog
.getWindow()
.findViewById(R.id.design_bottom_sheet)
.setBackgroundResource(android.R.color.transparent);
And don't change standard ids (R.id.design_bottom_sheet and android.R.color.transparent). It makes background of Bottom Sheet Dialog transparent

private void setupDialogBackground() {
getDialog().setOnShowListener(new DialogInterface.OnShowListener() {
#Override
public void onShow(DialogInterface dialog) {
BottomSheetDialog d = (BottomSheetDialog) dialog;
FrameLayout bottomSheet = (FrameLayout) d.findViewById(R.id.design_bottom_sheet);
if (bottomSheet == null)
return;
bottomSheetBehavior = BottomSheetBehavior.from(bottomSheet);
bottomSheet.setBackground(null);
}
});
}

add this in styles.xml
<style name="TransparentDialog" parent="Theme.Design.Light.BottomSheetDialog">
<item name="android:windowCloseOnTouchOutside">false</item>
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowContentOverlay">#null</item>
<item name="android:colorBackground"> #android:color/transparent</item>
<item name="android:backgroundDimEnabled">true</item>
<item name="android:backgroundDimAmount">0.3</item>
<item name="android:windowFrame">#null</item>
<item name="android:windowIsFloating">true</item>
</style>
BottomSheetDialog bsDialog = new BottomSheetDialog(this,R.style.TransparentDialog);
bsDialog.setContentView(R.layout.bottomsheet_dialog);
bsDialog.show();
and voila it works

I had to wait until after setContentView was called in onActivityCreated in order to access the container. Also while getDialog().getWindow().findViewById(R.id.design_bottom_sheet) did successfully find the FrameLayout, I decided to avoid explicitly calling out the internally defined id by using getView().getParent().
#Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState); // setContentView called here
((View) getView().getParent()).setBackgroundColor(Color.TRANSPARENT);
}

Add this in your bottomSheet setupDialog(final Dialog dialog, int style)
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
and also add android:background="#android:color/transparent" to root view

Just need to use this style:
<style name="BaseBottomSheetDialogThem" parent="#style/Theme.Design.Light.BottomSheetDialog">
<item name="android:windowIsFloating">true</item>
<item name="android:backgroundDimEnabled">false</item>
</style>
and set your style to BaseBottomSheetDialogThem.

Here is the kotlin version thanks to kolorszczak . Hope it save someones time converting .
val dialog = BottomSheetDialog(activity!!)
dialog.setOnShowListener {
var dialogTmp: BottomSheetDialog = it as BottomSheetDialog
var bottomSheet: FrameLayout? =
dialogTmp.findViewById(R.id.design_bottom_sheet) as FrameLayout?
?: return#setOnShowListener
bottomSheet?.background = null
}

Create in your color.xml : <color name="colorTransparent">#00000000</color>
and use android:background="#color/colorTransparent"

change color background
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/bottom_sheet_placeholder_layout"
android:layout_weight="0.6"
android:layout_width="match_parent"
android:background="#00FFFFFF"
android:layout_height="50dp"
android:orientation="horizontal">
</LinearLayout>
Try it!!

Android TabLayout tabPaddingTop and tabPaddingBottom not being removed

Here is my tab layout XML
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="#dimen/custom_tab_layout_height"
android:background="#color/tab_background_primary"
app:tabGravity="fill"
app:tabIndicatorColor="#color/primary_white"
app:tabIndicatorHeight="3dp"
app:tabMinWidth="120dp"
app:tabMode="scrollable"
app:tabPaddingStart="-1dp"
app:tabPaddingEnd="-1dp"
app:tabPaddingTop="1dp"
app:tabPaddingBottom="1dp"
/>
It is removing the horizontal padding in between tabs but not the tabPaddingTop and tabPaddingBottom.
How do I remove the top and bottom padding to make each tab match the tabLayout height?
Custom view for each tab
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/tab"
android:textColor="#color/primary_white"
android:textSize="14sp"
android:textStyle="bold"
android:gravity="fill"
android:fontFamily="#string/font_fontFamily_medium"/>
I also tried using a Linear Layout with Imagview and Textview as custom view
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="match_parent"
android:gravity="fill"
android:layout_height="match_parent">
<ImageView
android:id="#+id/tab_logo"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:src="#mipmap/ic_settings_light"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="#+id/tab_title"
android:textColor="#color/primary_white"
android:textSize="14sp"
android:textStyle="bold"
android:gravity="center"
android:text="test"
android:fontFamily="#string/font_fontFamily_medium"/>
</LinearLayout>
And here is how I inflated the custom tab view (for custom view with textView)
TextView tabTwo = (TextView) LayoutInflater.from(this).inflate(R.layout.custom_tab, null);
tabTwo.setText("CASH IN");
tabTwo.setBackgroundColor(Color.parseColor("#EC5A0B"));
tabTwo.setCompoundDrawablesWithIntrinsicBounds(R.mipmap.ic_action_cash_light, 0, 0, 0);
tabLayout.getTabAt(1).setCustomView(tabTwo);
As you can see, I am trying to give different background color to each tab. But the padding at top and bottom is still there.

I think Android design library's TabLayout have default padding like what you can see here
The other recommendation that I can recommend to you is using Google IO's SlidingTabLayout (Don't forget to copy SlidingTabStrip too!)
The usage is simple, just include in your layout :
<com.myapp.ui.widget.SlidingTabLayout
android:id="#+id/main_view_pager_tab"
android:layout_width="match_parent"
android:layout_height="#dimen/tabs_height"
android:background="#color/white" />
and then in your activity set the viewpager and listener (if you want)
mainViewPagerTab.setViewPager(mainViewPager);
mainViewPagerTab.setOnPageChangeListener(onPageChangeListener);

This was the only solution
https://stackoverflow.com/a/37942842/5689605
Try the code, after adding your tabs to your tablayout.
final ViewGroup test = (ViewGroup)(tabs.getChildAt(0));//tabs is your Tablayout
int tabLen = test.getChildCount();
for (int i = 0; i < tabLen; i++) {
View v = test.getChildAt(i);
v.setPadding(0, 0, 0, 0);
}

I got the best solution for this issue, check the below code and this will helpful.
My tablayout XML is like this:
<RelativeLayout
android:layout_height="30dp"
android:background="#333333"
android:layout_width="match_parent">
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabTextAppearance="#style/MineCustomTabText"
style="#style/tab_bassr"
app:tabMode="scrollable"/>
</RelativeLayout>
the relative layout upon this will reduce the top and bottom margin
<style name="tab_bassr" parent="TextAppearance.Design.Tab">
<item name="android:layout_width">match_parent</item>
<item name="android:tabStripEnabled">false</item>
<item name="tabPaddingStart">5dp</item>
<item name="tabPaddingEnd">5dp</item>
</style>
<style name="MineCustomTabText" parent="TextAppearance.Design.Tab">
<item name="android:textSize">14sp</item>
</style>
The style file is for left and right padding and the text size.

How can I add divider between action Items in Toolbar

I want to design a toolbar like:.
I have done most of it but having some problem.
I don't know how to make a divider between the toolbars items and also having no idea how to set a counter variable attached to the action button that increment as order takes place like given in the picture.
Any suggestions?

You can place your layout like below:
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="#+id/..."
android:showAsAction="always."
android:icon="#drawable/..."
android:title="#string/..."
android:actionLayout="#layout/your_layout_here"/>
or
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="#+id/..."
android:showAsAction="always."
android:icon="#drawable/..."
android:title="#string/..."
android:actionViewClass="your_class"/>
where "your_class" - class which inflate and implement your view with separator

Try to create a custom toolbar. Add your views between the toolbar's opening and closing tags.
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="56dip"
android:background="#ff0000">
<!-- the back button -->
<ImageView
android:id="#+id/backButton"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="left"
android:clickable="true"
android:onClick="onBackButtonClick"
android:paddingLeft="16dip"
android:paddingRight="16dip"
android:src="#drawable/ic_back" />
...
<!-- the devider -->
<View
android:layout_width="1dip"
android:layout_height="match_parent"
android:background="#ffffff" />
<ImageView .../>
</android.support.v7.widget.Toolbar>