Develop Reference

Tile not getting center in Collapsed toolbar

I tried setting collapsingToolbarLayout.setCollapsedTitleGravity(Gravity.CENTER);
collapsingToolbarLayout.setExpandedTitleGravity(Gravity.CENTER);
and almost all available links on INTERNET but i am not able to put the title in center of toolbar.
plz help !

make your Toolbar like this
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:contentInsetEnd="0dp"
app:contentInsetLeft="0dp"
app:contentInsetRight="0dp"
app:contentInsetStart="0dp"
app:contentInsetStartWithNavigation="0dp"
app:layout_collapseMode="pin"
app:popupTheme="#style/AppTheme.PopupOverlay">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="vertical"
android:text="Center">
<TextView
android:layout_marginLeft="-25dp"
android:id="#+id/toolbar_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center" />
</LinearLayout>
</android.support.v7.widget.Toolbar>
in your activity file change like this
toolbar=(Toolbar)findViewById(R.id.tool_bar);
TextView mTitle = (TextView) toolbar.findViewById(R.id.toolbar_title);
mTitle.setText("PREM");
setSupportActionBar(toolbar);

To center the text in the toolbar you need to use a custom toolbar with a textview inside it rather than using android:title=""
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:id="#+id/toolbar"
android:layout_height="?actionBarSize">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=""
android:textColor="#000000"
android:id="#+id/tvToolbarTitle"
android:layout_gravity="center"
android:textSize="16sp"/>
</android.support.v7.widget.Toolbar>
You can apply the same logic in a collapsible toolbar.

Android Changing Shape of The Back Button

The back button on the action bar of my app seems a little large. When I hold my finger on it on my phone the button highlights and I can see the right side of it is rounded out pushing over the text.
How can I make the button square and move the text closer to the left side of the action bar instead of being more out to the middle?

Try setting a custom drawable for your Toolbar's back navigation icon
ActionBar ab = getSupportActionBar();
ab.setHomeAsUpIndicator(R.drawable.ic_back);
ab.setDisplayShowHomeEnabled(true);
ab.setDisplayHomeAsUpEnabled(true);
Or if you want precise decoration use a custom toolbar layout,
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?android:attr/actionBarSize"
android:minHeight="?android:attr/actionBarSize"
app:layout_collapseMode="pin"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay"
app:theme="#style/ToolbarStyle">
<!-- Left side layout-->
<LinearLayout
android:id="#+id/layout_left_container"
android:layout_width="wrap_content"
android:layout_height="?attr/actionBarSize"
android:layout_gravity="start|center"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:gravity="center|start"
android:orientation="horizontal">
<ImageButton
android:id="#+id/iv_left_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="#+id/txt_left_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:ellipsize="end"
android:maxLength="30"
android:singleLine="true"
android:text="#string/app_name"
android:textColor="#color/white"
android:textSize="14sp" />
</LinearLayout>
</android.support.v7.widget.Toolbar>

you can use toolbar property for this
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
app:contentInsetStartWithNavigation="0dp"
like this use in toolbar
<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:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
app:contentInsetStartWithNavigation="0dp" />

CollapsingToolbarLayout center TextView in Toolbar

I want toolbar_title layout center in toolbar, but itlooks like there is some margin on left, if I remove CollapsingToolbarLayout it is ok.
Inorder to center toolbar_title text I set toolbar_title's margin right manualy in code, but the only after the fragment resumed I toolbar_title.getX() can get the correct value, so I postDelayed 50 ms to do this.
now ther is the question:
how to center toolbar_title in CoordinatorLayout on a better way?
<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"
xmlns:tools="http://schemas.android.com/tools">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:expandedTitleMarginStart="?attr/actionBarSize"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<LinearLayout
android:id="#+id/layout_header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#f5f5f5"
android:orientation="vertical"
app:layout_collapseMode="parallax">
</LinearLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:theme="#style/AppTheme.ToolBar"
app:layout_collapseMode="pin"
app:popupTheme="#style/AppTheme.PopupOverlay">
<TextView
android:id="#+id/toolbar_title"
style="#style/TextAppearance.AppCompat.Widget.ActionBar.Title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textColor="#android:color/white"
android:textSize="18sp"
tools:text="title"/>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/swipe_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>

You just need to add below attributes in your Toolbar.
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
See similar thread on stackoverflow: Android API 21 Toolbar Padding
See title textview position before and after attributes adding in toolbar.
Before adding attributes:
After adding attributes:

Toolbar and tablaout and fragment to share same background image

i am very new to android i am trying to display one background image to all my tool and tabs and fragment ,i got this background image to my toolbar and tab but how to show same background image to my fragment please any one help me how to do this
my Xml code
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minHeight="?attr/actionBarSize"
android:id="#+id/mainActivityBar"
android:layout_alignParentTop="true"
android:background="#drawable/actionbar"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
app:contentInsetEnd="0dp"
app:contentInsetRight="0dp"
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="President"
android:id="#+id/appname_1"
android:background="#android:color/transparent"
android:textColor="#ffffff"
android:layout_marginLeft="20dp" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
style="#style/myCustomTabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
android:layout_below="#+id/appname_1"
android:layout_alignParentEnd="true"
android:layout_alignParentStart="false"
android:layout_alignParentLeft="false"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="false"
android:layout_alignLeft="#+id/appname_1"
app:tabGravity="fill"
app:tabMode="scrollable"/>
</RelativeLayout>
I want like below image please any one help me how to get like below image

Try to do the following:
Set the background of your TabLayout and Toolbar to transparent.
you can do that by this attribute: android:background="#android:color/transparent"
Then set the desired background image to your root view. (In your case its most probably a CoordinatorLayout - you didn't post the full layout).
If you need a code example let me know, but it should be pretty straightforward.
EDIT:
As you requested a code example. It's just as I described above.
Instead of CoordinatorLayout as the root layout you can use of course any other layout you need.
<?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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/background">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"
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="#android:color/transparent"
app:popupTheme="#style/AppTheme.PopupOverlay" />
<android.support.design.widget.TabLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent"/>
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>

How to get title at center of Toolbar

I am trying to get the title of the Collapsed Toolbar to the center. But there seems to be some bug in the basic layout itself. The title has an offset for some reason.
Unable to figure out how to fix this. Also there seems to be no property to apply negative margin/padding to the collapsedTitle.
<android.support.design.widget.CoordinatorLayout
android:id="#+id/coordinator_layout"
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">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="#dimen/app_bar_height"
android:fitsSystemWindows="true"
android:theme="#style/XXXXAppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsingToolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:collapsedTitleGravity="center"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleGravity="top|center_horizontal"
app:expandedTitleMarginTop="-10dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:title="REGISTER">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/XXXXAppTheme.PopupOverlay"/>
<ImageView
android:id="#+id/ivContent"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/white_background"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
app:layout_collapseMode="parallax"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<FrameLayout
android:id="#+id/flContainer"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>

Try this within your "Toolbar"
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar_top"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:minHeight="?attr/actionBarSize"
android:background="#color/color"
app:theme="#style/ToolBarTheme" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Register"
android:layout_gravity="center"
android:id="#+id/toolbar_title" />
</android.support.v7.widget.Toolbar>

To make it centered, please follow the steps:
To use a custom title in your Toolbar all you need to do is remember
is that Toolbar is just a fancy ViewGroup so you can add a custom
title like so:
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar_top"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:minHeight="?attr/actionBarSize"
android:background="#color/action_bar_bkgnd"
app:theme="#style/ToolBarTheme" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Toolbar Title"
android:layout_gravity="center"
android:id="#+id/toolbar_title" />
</android.support.v7.widget.Toolbar>
This means that you can style the TextView however you would like
because it's just a regular TextView. So in your activity you can
access the title like so:
Toolbar toolbarTop = (Toolbar) findViewById(R.id.toolbar_top);
TextView mTitle = (TextView) toolbarTop.findViewById(R.id.toolbar_title);
From: Android toolbar center title and custom font
To remove the default app name title, do this:
setSupportActionBar(toolbar_top);
getSupportActionBar().setDisplayShowTitleEnabled(false);
Hope it help

You should use this. To add TextView in side Toolbar
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="130dp"
android:id="#+id/toolbar">
<android.support.v7.widget.AppCompatTextView
android:id="#+id/toolbar_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/app_name"
android:layout_gravity="center"/>
</android.support.v7.widget.Toolbar>