CODEWITHSUNDEEP
androidandroid-actionbaralignmentcentertitle
Ponting
Ponting

Reputation: 2246

How to align title at center of ActionBar in default theme(Theme.Holo.Light)

I searched a lot but can not find a way, How can I set then title at center of ActionBar instead of left aligned. I used below code to set the title at center :

ViewGroup decorView= (ViewGroup) this.getWindow().getDecorView();
LinearLayout root= (LinearLayout) decorView.getChildAt(0);
FrameLayout titleContainer= (FrameLayout) root.getChildAt(0);
TextView title= (TextView) titleContainer.getChildAt(0);
title.setGravity(Gravity.CENTER);

But it gives error as below :

ClassCastException : com.android.internal.widget.ActionBarView can not 
be cast to android.widget.TextView.

Any other solution ..Any help will be appreciated.

Upvotes: 42

Views: 108579

Answers (12)

Princeps Polycap
Princeps Polycap

Reputation: 231

After two days of going through the web, this is what I came up with in Kotlin. Tested and works on my app

  private fun setupActionBar() {
    supportActionBar?.apply {
        displayOptions = ActionBar.DISPLAY_SHOW_CUSTOM
        displayOptions = ActionBar.DISPLAY_SHOW_TITLE
        setDisplayShowCustomEnabled(true)
        title = ""


        val titleTextView = AppCompatTextView(this@MainActivity)
        titleTextView.text = getText(R.string.app_name)
        titleTextView.setSingleLine()
        titleTextView.textSize = 24f
        titleTextView.setTextColor(ContextCompat.getColor(this@MainActivity, R.color.appWhite))

        val layoutParams = ActionBar.LayoutParams(
            ActionBar.LayoutParams.WRAP_CONTENT,
            ActionBar.LayoutParams.WRAP_CONTENT
        )
        layoutParams.gravity = Gravity.CENTER
        setCustomView(titleTextView, layoutParams)

        setBackgroundDrawable(
            ColorDrawable(
                ContextCompat.getColor(
                    this@MainActivity,
                    R.color.appDarkBlue
                )
            )
        )

    }
}

Upvotes: 0

Jinu
Jinu

Reputation: 8675

Check out new Tool bar on support library class in Lollipop update you can design actionbar by adding toolbar in your layout

add these items in your app theme 

 <item name="android:windowNoTitle">true</item>
 <item name="windowActionBar">false</item>

Create your toolbar in a layout and include your textview in center design your toolbar 

<android.support.v7.widget.Toolbar
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/acbarcolor">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <TextView
            android:id="@+id/toolbar_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_centerVertical="true"
            android:text="@string/app_name"
            android:textColor="#ffffff"
            android:textStyle="bold" />

    </RelativeLayout>

</android.support.v7.widget.Toolbar>

add your action bar as tool bar

toolbar = (Toolbar) findViewById(R.id.toolbar);
if (toolbar != null) {
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}

please ensure that you need to include toolbar on your resource file like this

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
    android:orientation="vertical"
    android:layout_height="match_parent"
    android:layout_width="match_parent"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <include
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        layout="@layout/toolbar" />

    <android.support.v4.widget.DrawerLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/drawer_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <!-- Framelayout to display Fragments -->
        <FrameLayout
            android:id="@+id/frame_container"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <include
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                layout="@layout/homepageinc" />

        </FrameLayout>

        <fragment
            android:id="@+id/fragment1"
            android:layout_gravity="start"
            android:name="com.shouldeye.homepages.HomeFragment"
            android:layout_width="250dp"
            android:layout_height="match_parent" />

    </android.support.v4.widget.DrawerLayout>

</LinearLayout>

Upvotes: 7

dmz9
dmz9

Reputation: 333

solution is based on these things:

  • you need to use your own class that extends Toolbar (support.v7.widget.toolbar)
  • you need to override one method Toolbar#addView

what does it do:

when first time toolbar is executing #setTitle, it creates AppCompatTextView and uses it to display title text.

when the AppCompatTextView is created, toolbar (as ViewGroup), adds it into it's own hierarchy with #addView method.

also, while trying to find solution i noticed that the textview has layout width set to "wrap_content", so i decided to make it "match_parent" and assign textalignment to "center".

MyToolbar.kt, skipping unrelated stuff (constructors/imports):

class MyToolbar : Toolbar {

  override fun addView(child: View, params: ViewGroup.LayoutParams) {
    if (child is TextView) {
        params.width = ViewGroup.LayoutParams.MATCH_PARENT
        child.textAlignment= View.TEXT_ALIGNMENT_CENTER
    }
    super.addView(child, params)
  }
}

possible "side effects" - this will apply to "subtitle" too

Upvotes: 0

Darshan Khatri
Darshan Khatri

Reputation: 327

if You are Using Toolbar the just Add

android:layout_gravity="center_horizontal"

Under the Toolbar Just like this snippet

 <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="@color/colorPrimary"
        app:popupTheme="@style/AppTheme.PopupOverlay">

        <TextView
            android:id="@+id/tvTitle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"    //Important 
            android:textColor="@color/whitecolor"
            android:textSize="20sp"
            android:textStyle="bold" />
    </android.support.v7.widget.Toolbar>

</android.support.design.widget.AppBarLayout>

Upvotes: 4

tompadre
tompadre

Reputation: 807

You can force the toolbar by wrapping title and level right padding which has default left padding for title. Than put background color to the parent of toolbar and that way part which is cut out by wrapping title is in the same color(white in my example):

<android.support.design.widget.AppBarLayout
    android:id="@+id/appbar_layout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/white">

        <android.support.v7.widget.Toolbar
           android:id="@+id/toolbar"
           android:layout_width="wrap_content"
           android:layout_height="56dp"
           android:layout_gravity="center_horizontal"
           android:paddingEnd="15dp"
           android:paddingRight="15dp"
           android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
           app:titleTextColor="@color/black"/>

</android.support.design.widget.AppBarLayout>

Upvotes: 0

Stefano Munarini
Stefano Munarini

Reputation: 2717

You can create a custom layout and apply it to the actionBar.

To do so, follow those 2 simple steps:

  1. Java Code

    getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
getSupportActionBar().setCustomView(R.layout.actionbar);

Where R.layout.actionbar is the following layout.

  1. XML

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:orientation="vertical">

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:id="@+id/action_bar_title"
    android:text="YOUR ACTIVITY TITLE"
    android:textColor="#ffffff"
    android:textSize="24sp" />
</LinearLayout>

It can be as complex as you want. Try it out!

EDIT:

To set the background you can use the property android:background in the container layout (LinearLayout in that case). You may need to set the layout height android:layout_height to match_parent instead of wrap_content.

Moreover, you can also add a LOGO / ICON to it. To do so, simply add an ImageView inside your layout, and set layout orientation property android:orientation to horizontal (or simply use a RelativeLayout and manage it by yourself).

To change the title of above custom action bar dynamically, do this: 

TextView title=(TextView)findViewById(getResources().getIdentifier("action_bar_title", "id", getPackageName()));
title.setText("Your Text Here");

Upvotes: 127

Umar Ata
Umar Ata

Reputation: 4268

I know my answer is not on time but this is purely code no xml required.
This is for use in Activity

public void setTitle(String title){
    getSupportActionBar().setHomeButtonEnabled(true);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    TextView textView = new TextView(this);
    textView.setText(title);
    textView.setTextSize(20);
    textView.setTypeface(null, Typeface.BOLD);
    textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
    textView.setGravity(Gravity.CENTER);
    textView.setTextColor(getResources().getColor(R.color.white));
    getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
    getSupportActionBar().setCustomView(textView);
}


This is for use in Fragment

public void setTitle(String title){
    ((AppCompatActivity)getActivity()).getSupportActionBar().setHomeButtonEnabled(true);
    ((AppCompatActivity)getActivity()).getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    TextView textView = new TextView(getActivity());
    textView.setText(title);
    textView.setTextSize(20);
    textView.setTypeface(null, Typeface.BOLD);
    textView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
    textView.setGravity(Gravity.CENTER);
    textView.setTextColor(getResources().getColor(R.color.white));
    ((AppCompatActivity)getActivity()).getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
    ((AppCompatActivity)getActivity()).getSupportActionBar().setCustomView(textView);
}

Upvotes: 5

Olivier Berni
Olivier Berni

Reputation: 21

I had the same problem, and because of the "Home" button added automatically in the toolbar, my text was not exactly entered.

I fixed it the dirty way but it works well in my case. I simply added a margin to the right of my TextView to compensate for the home button on the left. Here's my toolbar layout :

<android.support.v7.widget.Toolbar
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:elevation="1dp"
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    app:layout_collapseMode="pin"
    android:gravity="center"
    android:background="@color/mainBackgroundColor"
    android:fitsSystemWindows="true" >

    <com.lunabee.common.utils.LunabeeShadowTextView
        android:id="@+id/title"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginRight="?attr/actionBarSize"
        android:gravity="center"
        style="@style/navigation.toolbar.title" />

</android.support.v7.widget.Toolbar>

Upvotes: 0

roscodex
roscodex

Reputation: 97

This actually works:

 getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
 getActionBar().setCustomView(R.layout.custom_actionbar);
  ActionBar.LayoutParams p = new ActionBar.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        p.gravity = Gravity.CENTER;

You have to define custom_actionbar.xml layout which is as per your requirement e.g. :

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:background="#2e2e2e"
    android:orientation="vertical"
    android:gravity="center"
    android:layout_gravity="center">

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/top_banner"
        android:layout_gravity="center"
        />
</LinearLayout>

Upvotes: 3

Amir
Amir

Reputation: 1268

Java code: write this in onCreate()
getSupportActionBar().setDisplayShowCustomEnabled(true); getSupportActionBar().setCustomView(R.layout.action_bar);

and for you custom view, simply use FrameLayout, east peasy!
android.support.v7.widget.Toolbar is another option

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="left|center_vertical"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="@string/app_name"
        android:textColor="@color/black"
        android:id="@+id/textView" />
</FrameLayout>

Upvotes: 1

support_ms
support_ms

Reputation: 1943

I think by positioning views on action bar you will reach what you want.On action bar's layout when layout params set to match parent it does not match full width that's why I did it programmatically where I succeed.By setting width (it works like layout_weight="value") we can set our view wherever we want:

    actionBar = getSupportActionBar(); 
    actionBar.setDisplayShowCustomEnabled(true); 

    LayoutInflater ll = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    LinearLayout linearLayout = (LinearLayout) ll.inflate(R.layout.custom_actionbar, null);
    //inner layout within above linear layout
    LinearLayout inner = (LinearLayout) linearLayout.findViewById(R.id.inner_linear_ractionbar);
    inner.setMinimumWidth(getWidth() * 2 / 10);
    // we will set our textview to center and display there some text
    TextView t = (TextView) linearLayout.findViewById(R.id.center_text);
    t.setWidth(getWidth() * 6 / 10);


    Button b = (Button) linearLayout.findViewById(R.id.edit_button);
    b.setWidth(getWidth() *3/ 20);

    ImageButton imageButton = (ImageButton) linearLayout.findViewById(R.id.action_bar_delete_item);
    imageButton.setMinimumWidth(deviceUtils.getWidth() / 20);

and here is getWidth() method:

 public int getWidth() { 
    DisplayMetrics dm = new DisplayMetrics();
     mActivity.getWindowManager().getDefaultDisplay().getMetrics(dm);
    return dm.widthPixels; 
   }

Upvotes: 1

esentsov
esentsov

Reputation: 6532

It seems there is no way to do this without custom view. You can get the title view:

View decor = getWindow().getDecorView();
TextView title = (TextView) decor.findViewById(getResources().getIdentifier("action_bar_title", "id", "android"));

But changing of gravity or layout_gravity doesn't have an effect. The problem in the ActionBarView, which layout its children by itself so changing of layout params of its children also doesn't have an effect. To see this excecute following code:

ViewGroup actionBar = (ViewGroup) decor.findViewById(getResources().getIdentifier("action_bar", "id", "android"));
View v = actionBar.getChildAt(0);
ActionBar.LayoutParams p = new ActionBar.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
p.gravity= Gravity.CENTER;
v.setLayoutParams(p);
v.setBackgroundColor(Color.BLACK);

Upvotes: 8

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