CODEWITHSUNDEEP
androidandroid-actionbaractionbarsherlock
Doug Sparling
Doug Sparling

Reputation: 545

ActionBar - custom view with centered ImageView, Action Items on sides

I have a requirement to center a custom logo (using an ImageView) in the Actionbar for the "Home" activity. I'm using ABS for this project. This is very similar to a another question posted on S.O. (ActionBar logo centered and Action items on sides), but I'm not sure if the ImageView or search menu makes a difference, as I'm not getting the results I'm looking for (a centered image), or if I've just got it wrong. Basically, I set an Icon on the left, insert the custom view in the center, and have a search icon on the right (OptionsMenu). The image does appear a bit to the right of the icon, but it's still left of centered. Any pointers on how to center an ImageView in the actionbar would be greatly appreciated.

Home.java:

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_home);

    LayoutInflater inflater = (LayoutInflater) getSupportActionBar().getThemedContext()
            .getSystemService(LAYOUT_INFLATER_SERVICE);

    final View customActionBarView = inflater.inflate(
            R.layout.actionbar_custom_view_home, null);

    /* Show the custom action bar view and hide the normal Home icon and title */
    final ActionBar actionBar = getSupportActionBar();
    actionBar.setHomeButtonEnabled(true);
    actionBar.setDisplayHomeAsUpEnabled(false);
    actionBar.setDisplayShowTitleEnabled(false);
    actionBar.setIcon(R.drawable.ic_ab_som);
    actionBar.setCustomView(customActionBarView);
    actionBar.setDisplayShowCustomEnabled(true);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = new MenuInflater(this);
    inflater.inflate(R.menu.search, menu);
    return true;
}

res/layout/actionbar_custom_view_home.xml:

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

<ImageView
    android:id="@+id/actionBarLogo"
    android:contentDescription="@string/application_name"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:clickable="false"
    android:duplicateParentState="false"
    android:focusable="false"
    android:longClickable="false"
    android:padding="@dimen/padding_small"
    android:src="@drawable/logo_horizontal" />

</LinearLayout>

res/menu/search.xml:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item 
        android:id="@id/search_item"
        android:icon="?attr/action_search"
        android:title="@string/search_label"
        android:showAsAction="ifRoom|collapseActionView">
    </item>
</menu>

Upvotes: 42

Views: 71412

Answers (8)

jeason_tse
jeason_tse

Reputation: 71

I encountered this problem,here is my solution:

ActionBar.LayoutParams layoutParams = new ActionBar.LayoutParams(
        ActionBar.LayoutParams.MATCH_PARENT, ActionBar.LayoutParams.MATCH_PARENT);
layoutParams.gravity = Gravity.CENTER_HORIZONTAL|Gravity.CENTER_HORIZONTAL;
actionBar.setCustomView(yourCustomView,layoutParams);

Upvotes: 7

Bamdeb Ghosh
Bamdeb Ghosh

Reputation: 132

For me "layoutParams.leftMargin" did the magic. I am able to push icon from left to right.

    androidx.appcompat.app.ActionBar actionBar = getSupportActionBar();
    actionBar.setDisplayOptions(actionBar.getDisplayOptions()
            | ActionBar.DISPLAY_SHOW_CUSTOM);
    actionBar.setDisplayOptions(actionBar.getDisplayOptions());
    ImageView imageView = new ImageView(actionBar.getThemedContext());
    imageView.setImageResource(R.drawable.content_copy);

    ActionBar.LayoutParams layoutParams = new ActionBar.LayoutParams(
            ActionBar.LayoutParams.WRAP_CONTENT,
            ActionBar.LayoutParams.WRAP_CONTENT
            );
    layoutParams.leftMargin = 50;
    imageView.setLayoutParams(layoutParams);

    actionBar.setCustomView(imageView);

Upvotes: 0

Blueberry
Blueberry

Reputation: 2231

Late to the party but in case it helps anyone else - use a layer-list and set it as the background. Otherwise, the logo will be centering based on remaining space, not the entire toolbar as Reinherd mentions.

You can use a layer-list with a static background color, and an image with gravity set to center as below. Hope it helps!

toolbar.axml

<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="?attr/actionBarSize"
    android:background="@drawable/toolbar_background"
    android:theme="@style/ThemeOverlay.AppCompat.Dark"
    app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
    app:layout_scrollFlags="scroll|enterAlways"
    app:layout_collapseMode="pin">
</android.support.v7.widget.Toolbar>

toolbar_background.xml

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
  <item>
    <shape android:shape="rectangle">
      <solid android:color="@color/colorPrimary" />
    </shape>
  </item>
  <item>
    <bitmap android:src="@drawable/logo" android:gravity="center" />
  </item>
</layer-list>

Upvotes: 3

Dhaval Parmar
Dhaval Parmar

Reputation: 18978

If you want imageview in Center of ActionBar then use:

enter image description here

just replace getActionBar(); to getSupportActionBar(); in below code

public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        final ActionBar actionBar = getActionBar();
        actionBar.setCustomView(R.layout.actionbar_custom_view_home);
        actionBar.setDisplayShowTitleEnabled(false);
        actionBar.setDisplayShowCustomEnabled(true);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

your actionbar_custom_view_home.xml

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

    <ImageView
        android:id="@+id/actionBarLogo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:clickable="false"
        android:focusable="false"
        android:longClickable="false"
        android:src="@drawable/ic_launcher" />

</LinearLayout>

Hide Actionbar Icon

enter image description here

final ActionBar actionBar = getActionBar();
actionBar.setCustomView(R.layout.actionbar_custom_view_home);
actionBar.setDisplayShowTitleEnabled(false);
actionBar.setDisplayShowCustomEnabled(true);
actionBar.setDisplayUseLogoEnabled(false);
actionBar.setDisplayShowHomeEnabled(false);

Note: for < 11 API use getSupportActionBar() and > 11 API use getActionBar()

EDITED: 02/03/16 for Toolbar

<android.support.v7.widget.Toolbar
   style="@style/ToolBarStyle"
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:background="?attr/colorPrimary"
   android:minHeight="@dimen/abc_action_bar_default_height_material">

    <ImageView
        android:layout_width="wrap_content"
        android:contentDescription="@string/logo"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:src="@drawable/ic_launcher"/>

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

Upvotes: 69

walla
walla

Reputation: 303

The only thing I found working is putting (put right or left as needed, or both): 

android:layout_marginLeft|Right="?attr/actionBarSize"

that I found here: http://sourcey.com/android-custom-centered-actionbar-with-material-design/

Upvotes: 2

Alexey Osminin
Alexey Osminin

Reputation: 190

I'm faced with the same problem and I suggest the following solution:

  1. in your res/layout/actionbar_custom_view_home.xml change width of layout to wrap_content: 

    android:layout_width="wrap_content"

  2. Get width of action bar like this:

    Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
//width of action bar is the same as width of whole screen
final int actionBarWidth = size.x;

  3. Add layoutListener to your customActionBarView:

    customActionBarView.addOnLayoutChangeListener(
  new OnLayoutChangeListener() {

    @Override
    public void onGlobalLayout() {
      float x = customActionBarView.getX();
      int logoImageWidth = imageLogo.getWidth();
      int logoPosition = actionBarWidth / 2 - logoImageWidth / 2;
      if (x != logoPosition) {
        customActionBarView.setX(logoPosition);
        customActionBarView.requestLayout();
      } else {
        customActionBarView.removeOnLayoutChangeListener(this);
      }
    }
  }
);

Upvotes: 2

Reinherd
Reinherd

Reputation: 5506

Explained:

enter image description here

The pink container, is the real space where you will add the view.

The trick is doing some maths, to center the View (whatever) to the middle.

In my case, the View was a TextView. Here's my full method:

public void addTextToActionBar( String textToSet )
{
    mActionbar.setDisplayShowCustomEnabled( true );

    // Inflate the custom view
    LayoutInflater inflater = LayoutInflater.from( this );
    View header = inflater.inflate( R.layout.actionbar_header, null );

    //Here do whatever you need to do with the view (set text if it's a textview or whatever)
    TextView tv = (TextView) header.findViewById( R.id.program_title );
    tv.setText( textToSet );

    // Magic happens to center it.
    int actionBarWidth = DeviceHelper.getDeviceWidth( this ); //Google for this method. Kinda easy.

    tv.measure( 0, 0 );
    int tvSize = tv.getMeasuredWidth();

    try
    {
        int leftSpace = 0;

        View homeButton = findViewById( android.R.id.home );
        final ViewGroup holder = (ViewGroup) homeButton.getParent();

        View firstChild =  holder.getChildAt( 0 );
        View secondChild =  holder.getChildAt( 1 );

        leftSpace = firstChild.getWidth()+secondChild.getWidth();
    }
    catch ( Exception ignored )
    {}

    mActionbar.setCustomView( header );

    if ( null != header )
    {
        ActionBar.LayoutParams params = (ActionBar.LayoutParams) header.getLayoutParams();

        if ( null != params )
        {
            int leftMargin =  ( actionBarWidth / 2 - ( leftSpace ) ) - ( tvSize / 2 ) ;

            params.leftMargin = 0 >= leftMargin ? 0 : leftMargin;
        }
    }
}

Layout:

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center_horizontal|center_vertical|center"
    android:orientation="horizontal" >

<TextView
    android:id="@+id/program_title"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textColor="@android:color/white"
    android:contentDescription="@string/content_description_program_title"
    android:ellipsize="end"
    android:maxLines="1"
    android:textSize="22sp"/>

</RelativeLayout>

Enjoy.

Upvotes: 18

Const
Const

Reputation: 976

The ImageView in your code is centered relative to the LinearLayout, not to the Action Bar. You can add left margin (android:layout_marginLeft) to the layout to adjust image position.

Other way to do it is not to add an icon and action items to the Action Bar, but to use a custom layout with icon and buttons inside. But you will need to handle action items yourself in that case.

Upvotes: 3

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