Develop Reference

how to push toolbar icons to extreme right

I'm using a toolbar which works pretty well for the most part until I started adding widgets inside it. I have a checkbox and button declared inside the toolbar but would like them to appear at the far end of the toolbar and working towards the title. I.e. the title remains on the left starting from the margin, but icons are added from the right. how do I go about this? I tried changing layout direction, but it just appeared Arabic like..

As you have not shown your code, supposing that your toolbar.xml is somewhat like this.
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/accent_color"
android:minHeight="?attr/actionBarSize"
android:layout_alignParentTop="true"
tools:context=".MyActivity"
android:theme="#style/ThemeOverlay.AppCompat.ActionBar">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/save"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_gravity="right" //might be the missing part
android:textColor="#color/white"
android:text="SAVE"/>
</android.support.v7.widget.Toolbar>
all you have to do is add gravity
android:layout_gravity="right"

You can use RelativeLayout as a child layout in toolbar and add icons in it then you can give alignment(left,right etc) to those icons

Toolbar align title in center with back button

I'm adding the Toolbar inside my app but seems I have a issue. In the app I should have a button that is on the right of the screen, and the title in center. But when I go deeper in the app I should display the back arrow on the left, by doing getSupportActionBar().setDisplayHomeAsUpEnabled(). And this is working fine but when I add the back button the text moves to the right so the back button can have some space I guess. Can someone tell me how can I have my button on the right and the title always in the center, no mather if the back button is displayed or not?
Here is my toolbar xml layout code:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:padding="5dp"
tools:ignore="MissingPrefix">
<RelativeLayout
android:id="#+id/toolbar_info_holder"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:id="#+id/toolbar_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:gravity="center"
android:textColor="#color/actionbar_title_color" />
<ImageView
android:id="#+id/toolbar_image"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_alignParentRight="true"
android:layout_centerVertical="true" />
<TextView
android:id="#+id/toolbar_count"
android:layout_width="13dp"
android:layout_height="13dp"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:background="#drawable/red_circle"
android:gravity="center"
android:text="4"
android:textColor="#color/white"
android:textSize="9sp" />
</RelativeLayout>
</android.support.v7.widget.Toolbar>

What worked for me is to set :
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
to the child view of the Toolbar, which is a LinearLayout for me (and a RelativeLayout for you). It sounded weird to me first but it's working so I won't complain.

First of all, a few general tips. This is the exact purpose behind the Android Hierarchical view. Use that to figure out what the container object of the back button is, how everything fits together, etc.
I suspect you can resolve your issue to some extend by changing some of the wrap_content to match_parent. Specifically, I suspect that changing it in your RelativeLayout for the layout_width will do the trick. But even if that doesn't, use the Hierarchical view to get a better understanding of exactly what happens when you are playing around, and it should help point you in the right direction.

You may have an activity title set, wich would prevent the logo from being centered on the action bar.
Try:
getActionBar().setDisplayShowTitleEnabled(false);
For v.7:
getSupportActionBar().setDisplayShowTitleEnabled(false);
This comes from this question and answer. Credit to #Fillipo Mazza.
Hope it helps.

Little late on this post, but will explain how it can work.
You can use custom view for your toolbar using following code.
supportActionBar?.setCustomView(R.layout.app_bar_title)
supportActionBar?.displayOptions = ActionBar.DISPLAY_SHOW_CUSTOM
What basically happens is, app_bar_layout is added as custom view inside Toolbar.
So let's say the need is to show title in the center along with back key or action buttons on right side.
We can create layout like this.
<?xml version="1.0" encoding="utf-8"?>
<TextView 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/app_bar_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_gravity="center"
tools:text="HOME" />
This textview will attach inside Toolbar layout and align itself in center of the Toolbar layout. Even if you add back key or action menu, it shall remain in the center.

Android Toolbar: Is it possible to adjust Hambuger icon right padding?

In my application there will be in-app notifications and I wish for the amount of notifications to be displayed adjacent to the hamburger icon which opens the navigation drawer which contains the button to actually view the notifications.
The image below shows what I have at the moment
Below is the code which carries this out
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:minHeight="?attr/actionBarSize"
android:background="#color/colorPrimary"
android:layout_width="match_parent"
app:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:layout_height="wrap_content">
<TextView
android:id="#+id/notification"
android:text="99"
android:padding="1dp"
android:background="#drawable/circle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="start|top"
/>
<TextView
android:id="#+id/toolbarTitle"
android:text="test"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
/>
</android.support.v7.widget.Toolbar>
This is what I would like to achieve for now
As you can see the TextView is closer to the hamburger icon since the right padding of the icon has been reduced
This is my dream (if it can be possible)
What I have tried
I have tried to adjust the contentInsetStart and contentInsetEnd as stated in this answer but did not work as I intended
Android API 21 Toolbar Padding
Please help. Thanks!
EDIT 1: Adding negative left padding to text view

Yes it is possible. For that you just have to design a custom AppBar in which you have to put you hamburger icon and notification textView in a RelativeLayout. Then make hamburger icon centerInParent="true" and notification textView alignParentRight="true" and alignParentTop="true". Make sure that you use an ImageView for the hamburger icon and set its padding and margin to 0. And also use the image as a background resource and not as source for the ImageView. Like use android:background="#drawable/hamburger_icon" instead android:src="#drawable/hamburger_icon" in the ImageView. Let me know if it works for you.

You could try setting a negative padding, i.e.
<TextView
android:id="#+id/notification"
android:paddingLeft="-10dp"
/>

Design UI Android (Element between CardViews)

My question is more informative. I just want to know how to make such design. I found android application called "weather timeline" and inside of that application between CardViews (as I understand) they used this element which I pointed out in picture below. I think its just ImageView but how to set it as here. It will be interesting to know any idea about that! Thanks for attection!

You could easily do it in the following way.
Let us assume that we are using a collection view where the card element is one type and the black gap with text in the middle is the other.
The cardView would look something like this
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:layout_marginTop="#dimen/circle_radius_half_size"
android:layout_marginBottom="#dimen/circle_radius_half_size">
</CardView>
<ImageView
android:layout_width="#dimen/circle_radius"
android:layout_height="#dimen/circle_radius"
android:layout_align_parentLeft="true"
android:layout_marginLeft="24dp"
android:src="#drawable/circle"
android:rotation="180"/>
<ImageView
android:layout_width="#dimen/circle_radius"
android:layout_height="#dimen/circle_radius"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_marginLeft="24dp"
android:src="#drawable/circle" />
</RelativeLayout>
Where drawable circle looks something like this
and the layout for black grape with text in the middle looks something like this
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp">
<View
android:layout_width="#dimen/width_of_line"
android:layout_height="match_parent"
android:layout_margin_left="#dimen/line_margin"
android:background="#color/white" />
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_margin_left="#dimen/line_margin" >
<!-- The Text View Layouts Here -->
</LinearLayout>
</LinearLayout>
Where line_margin is 24dp + CircleHalfSize - LineWidthHalfSize
Of course the CircleHalfSize and LineWidthHalfSize are in DP
Now it is just a question of arranging them properly via the adapter. Personally I would use the RecyclerView. Great Flexibility.
Also this way if you wanted the bubbles to be gone, all you have to do is set the bubble ImageView's visibility to GONE and that too you can do specifically either for the top or the bottom.

I'm pretty sure that this could be accomplished using 9-patched images.
By determining the way to draw your patches and how to set them as a background for your layouts you'll get the same result.
Quick illustrated demo
By adjusting the two backgrounds exactly one above the other you'll get the UI you posted.
Hope it helps.
Further reading
To see how to draw 9-patched images here is a documentation.

This can be accomplished by using a RelativeLayout. Then you can align all your views however you want inside your main view.
Thus, you would layout Card1 at the top, then layout the bubble connector with your marginTop attribute (remember this is from the top of the container, not from the bottom of the card) to layout that view wherever you want.
Basically, you would use a single RelativeLayout, then align the various views within that container wherever you want in relation to each other (or really in relation to the the top of your main view).
Checkout this Pseudo-code:
<RelativeLayout >
<CardView
layout_height = "8dp"
alignParentTop = "true"
/>
<!-- Connector Image -->
<ImageView
alignParentTop = "true"
layoutMarginTop = "10dp" <!-- or whatever it takes to align properly with CardView -->
/>
</RelativeLayout>

Android - display progress bar on top left corner

I'm currently trying to place a progress bar on the top left corner of my screen. However, I'm not quite sure which way is the best way to do it. Should I create a progress bar programatically instead of creating it in the xml? Or should I change my layout around? Thanks. XML below.
XML CODE:
<?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="match_parent"
android:background="#drawable/background"
android:focusableInTouchMode="true"
android:orientation="vertical" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="fill_parent"
android:layout_height="53dp"
android:layout_marginBottom="5dp"
android:src="#raw/topbar" />
<TextView
android:id="#+id/search_nameOfFeed"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical|center_horizontal"
android:text="Event Name"
android:textColor="#color/black"
android:textSize="18sp" >
</TextView>
<ListView
android:id="#+id/searchfeed_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="0.83"
android:dividerHeight="10.0sp"
android:fadingEdge="none"
android:stackFromBottom="false"
android:transcriptMode="normal" >
</ListView>
</LinearLayout>

The best option for layout when you're wanting to position views in specific areas is FrameLayout or RelativeLayout
RelativeLayout will allow you to place each view relative to each other.
FrameLayout allows you to stack views in a z-index positioning.
Play with both and you may come up with results you're looking for.

The best way to design layouts in android is by creating them in XML so you should do it in XML. You can achieve what you want by adding your ProgressBar before your ImageView

I doubt this is what you're looking for exactly, but another way you might want to implement a non-intrusive progress bar is to put it in the title bar of the activity. Check out this for an example of how to do this.

You can create it either way (In XML or Programatically). If you created it progamatcially, set the gravity to top and if you are creating in XML, use Relative Layout instead of Linear Layout and use android:layout_gravity="top|left". If you want to show it at the center follow the link