Develop Reference

How to make Android xml Linerlayout at the bottom of the activity in Android Studio?

How do I make LinearLayout in Android Studio at the bottom of the page. The result from the code below
I want the highlighted darken layout to be at the bottom of the page.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
tools:context=".MainPage"
android:orientation="vertical"
android:background="#ffffff">
<Button
android:id="#+id/taptoscan"
android:layout_marginTop="40dp"
android:layout_marginBottom="10dp"
android:layout_width="120dp"
android:layout_height="120dp"
android:background="#drawable/barcode"
android:layout_gravity="center"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tap to Scan"
android:fontFamily="#font/antic"
android:layout_gravity="center"
android:textSize="18sp"/>
<!--here is the layout i want to put at the bottom of the page-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:background="#color/colorPrimaryDark"
android:orientation="horizontal"
android:layout_alignParentBottom="true"
android:layout_gravity="bottom"
android:gravity="bottom">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</RelativeLayout>
</LinearLayout>
In the above code I tried the below and did not worked.
android:layout_alignParentBottom="true"
android:layout_gravity="bottom"
android:gravity="bottom"

You can use RelativeLayout at the outside. Something like this, and then ADD new one LinearLayout after that.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:orientation="vertical"
tools:context=".MainPage">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<Button
android:id="#+id/taptoscan"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_gravity="center"
android:layout_marginTop="40dp"
android:layout_marginBottom="10dp"
android:background="#drawable/barcode" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="#font/antic"
android:text="Tap to Scan"
android:textSize="18sp" />
</LinearLayout>
<!--here is the layout i want to put at the bottom of the page-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_alignParentBottom="true"
android:layout_gravity="bottom"
android:background="#color/colorPrimaryDark"
android:gravity="bottom"
android:orientation="horizontal">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</RelativeLayout>

Use Frame Layout as base layout to do it in the best way, it's gonna work definitely
Just use layout_gravity="bottom" in the LinearLayout which you want at bottom and
Just like this :
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:orientation="vertical"
tools:context=".MainPage">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<Button
android:id="#+id/taptoscan"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_gravity="center"
android:layout_marginTop="40dp"
android:layout_marginBottom="10dp"
android:background="#drawable/barcode" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="#font/antic"
android:text="Tap to Scan"
android:textSize="18sp" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_gravity="bottom"
android:background="#color/colorPrimaryDark"
android:orientation="horizontal">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</FrameLayout>

The approach below would help you achieve your design specifications with zero overlappings. Basically, there are four key steps:
Change your root layout to a RelativeLayout.
Inside the RelativeLayout, add a LinearLayout that would contain your Button and your TextView.
Inside the same RelativeLayout, add the LinearLayout that you intend to pin to the bottom of the screen.
Make sure yoU set the first LinearLayout on top of the second by using the android:layout_above="" attribute.
Now, here's the code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
tools:context=".MainPage">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#ffffff"
android:layout_above="#+id/bottomView">
<Button
android:id="#+id/taptoscan"
android:layout_marginTop="40dp"
android:layout_marginBottom="10dp"
android:layout_width="120dp"
android:layout_height="120dp"
android:background="#drawable/barcode"
android:layout_gravity="center"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Tap to Scan"
android:fontFamily="#font/antic"
android:layout_gravity="center"
android:textSize="18sp"/>
</LinearLayout>
<!--here is the layout i want to put at the bottom of the page-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:id="#+id/bottomView"
android:background="#color/colorPrimaryDark"
android:orientation="horizontal"
android:layout_alignParentBottom="true"
android:layout_gravity="bottom"
android:gravity="bottom">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</RelativeLayout>
</LinearLayout>
</RelativeLayout>
I hope this helps.

ScrollView with LinearLayout child does not wrap_content correctly

So, I have the following .xml:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.scopesystems.cityalert.ui.Despre"
tools:showIn="#layout/app_bar_despre"
android:background="#drawable/toolbar_incercare">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:id="#+id/linear_parent">
<RelativeLayout
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="0.1" />
<RelativeLayout
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="2.8" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<!--General-->
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
style="#style/sectionHeader"
android:text="#string/general"
/>
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/despre_general"/>
<!--Evaluti-ne-->
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
style="#style/sectionHeader"
android:text="#string/evaluatine"
/>
<!--Confidentialitate si licente-->
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
style="#style/sectionHeader"
android:text="#string/confidentialitate"
/>
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/despre_politici"/>
</LinearLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="0dip"
android:layout_height="wrap_content"
android:layout_weight="0.1" />
</LinearLayout>
</ScrollView>
The issue is that the last ListView is on only 1 row, and it has to be scrolled to display all the items in the list. I tried to add to the linear_parent a height of match_parent but it wont let me, it says that I should use instead wrapcontent. How can i change the layout to display the items on all the screen, not just half?

In this case, On the ScrollView use android:fillViewport="true" and for child of ScrollView android:height="wrap_content".

android TextView: How to avoid line breaks?

I'm trying to figure out how to avoid line breaks within a TextView.
If the lines are too long for the width of TextView, a horizontal scroll bar should appear. Everything I tryed with android:scrollbars (and so on) failed, there are always line breaks. This is my layout code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="de.zpit2u.maingate.MainGate_Logs">
<TextView
android:id="#+id/tvTitle_Logs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="20sp"
android:text="#string/app_logs" />
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/historyRefresh"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/tvTitle_Logs" >
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp"
android:fillViewport="false" >
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="de.zpit2u.maingate.MainGate_Logs">
<TextView
android:id="#+id/tvTitle_Logs_Clients"
android:layout_marginTop="20dp"
android:layout_marginStart="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="18sp"
android:text="#string/logs_clients" />
<TextView
android:id="#+id/tvText_Logs_Clients"
android:layout_below="#+id/tvTitle_Logs_Clients"
android:layout_marginTop="10dp"
android:layout_width="match_parent"
android:layout_height="10dp"
android:textSize="8sp"
android:fontFamily="monospace" />
<ProgressBar
android:id="#+id/progressBarLogs"
style="?android:attr/progressBarStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerInParent="true" />
</RelativeLayout>
</ScrollView>
</android.support.v4.widget.SwipeRefreshLayout>
Second TextView (tvText_Logs_Clients) within the RelativeLayout should be horizontally scrollable.

the way to make textview scroll horizontally.
<HorizontalScrollView android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView android:layout_width="40dp"
android:layout_height="wrap_content"
android:scrollHorizontally="true"
android:text="Horizontal scroll view will work now"/>
</HorizontalScrollView>

android layout image at left and two text block at right

I want a layout like this
Layout where an image at the bottom and two text block at right
It's a very simple layout with an image at left and two text blocks at right. I know how to do this in html and CSS but no idea how to do this in XML. What are the properties to float elements left or right? Right now if I add an image and two text blocks, the second text block is not shown.

Try this code, I've tested it:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:layout_weight="1"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"/>
</LinearLayout>

<?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:orientation="horizontal">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
<TextView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
</LinearLayout>
<ImageView
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="match_parent" />
</LinearLayout>
Edit it on your own :)

You can use a relative layout for this:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="match_parent">
<ImageView android:id="#+id/img"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:src="#drawable/ic_clear"/>
<TextView android:id="#+id/text1"
android:layout_height="wrap_content"
android:layout_toEndOf="#+id/img"
android:layout_toRightOf="#+id/img"
android:layout_width="match_parent"
android:text="text 1"/>
<TextView android:layout_below="#+id/text1"
android:layout_height="wrap_content"
android:layout_toEndOf="#+id/img"
android:layout_toRightOf="#+id/img"
android:layout_width="match_parent"
android:text="text 2"/>
</RelativeLayout>

Dynamically adjust position of Button in Android Studio

I have a Button in Linear Layout when I see in the Design view of Activity xml ,it looks like it is perfectly positioned but when I see in GenyMotoin avd it is farly placed from what I expected.
How to dynamically adjust the position of button on different screen sizes?
My xml file:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.xxx.MainScreen"
android:background="#b6b6b6">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
<TextView
android:layout_width="match_parent"
android:layout_height="263dp"
android:id="#+id/textView"
android:textSize="50dp" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="264dp">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Next Act"
android:id="#+id/button"
android:layout_marginTop="100dp"
android:layout_marginLeft="20dp" />
</LinearLayout>
</RelativeLayout>

Use Linear Layout for the outermost layout.

It's not clear what your trying to achieve but If you want to position your views at the center on all devices. Try to use RelativeLayout instead of LinearLayout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#b6b6b6"
android:padding="#dimen/activity_vertical_margin"
android:weightSum="2"
android:orientation="vertical"
tools:context="com.offtogeek.motivatemyself.MainScreen">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="horizontal">
<TextView
android:id="#+id/textView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerInParent="true"
android:gravity="left"
android:textSize="50dp" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="horizontal">
<Button
android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_weight="1"
android:text="Next Quote" />
</RelativeLayout>
</LinearLayout>