Develop Reference

Android - Layout doesn't appear on the device as it appears on the preview

This is the code of the XML file of the layout:
<?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="com.example.barda.wikirace.MainActivity"
android:background="#drawable/backgroundmain"
android:orientation="vertical"
android:weightSum="1"
android:id="#+id/activity_main"
>
<ImageView
android:id="#+id/wikiRaceTop"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:background="#android:color/transparent"
app:srcCompat="#drawable/wikiracetop" />
<TextView
android:id="#+id/emptyView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="1"
>
<View
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.25"/>
<Button
android:layout_marginBottom="7dp"
android:id="#+id/twoPlayersBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/twoplayersbutton"
/>
<View
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.5"/>
<Button
android:layout_marginBottom="7dp"
android:id="#+id/singlePlayerBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/playbutton"
android:onClick="startSinglePlayerMenuActivity"/>
<View
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.25"/>
</LinearLayout>
</LinearLayout>
This is how it looks in the preview:
And this is how it appears on the device (LG G4):
What can cause the problem?
As you can see, I want the buttons to be on the right color for them.

why don't just use the constraint layout?
if you want to do it in the way you're doing it, you will have to setup the width with a fixed value or match_parent why? because when you say wrap_content and the image is big is going to be over the other views as is happening also you can setup a android:layout_weight for the button if you want to use the weight as "control" for your layout, be coherent with the method that you use to adapt the views.

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>

Design In Android Studio

Is there any way to Design In Android Studio, to Design edittext with multipleScreen support without using padding and margin in .xml?
My code is not supporting the multiple screen(it exceed the screen). Please help me to design a code which support multiple screen inside screen.
mostly desin should not be designed using padding and margine.
<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:orientation="vertical"
android:layout_gravity="center_horizontal|center"
android:gravity="center_horizontal|center_vertical"
android:weightSum="3"
tools:context=".MainActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1">
<EditText
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="MOBILE"
/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
android:layout_weight="1"
</RelativeLayout>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1">
</RelativeLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"></LinearLayout>

Create your interface by code and set its elements size on px, so you will never have any hardcoded dimension and it will look OK in all screens.
Take a look at this
Hope this helps.

Whenever you are using weights with VERTICAL LinearLayout, give the height of child 0dp.
Try this 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:orientation="vertical"
android:weightSum="3">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Mobile"
android:layout_centerInParent="true"/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Mobile"
android:layout_centerInParent="true"/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Mobile"
android:layout_centerInParent="true"/>
</RelativeLayout>
Hope it helps.
Thank you

Design a round button over two colored layouts

I'm trying to design something like that :
Currently i'm having issue putting the button at "the middle" of the two layouts reunion point. Is there a way i do this ?
Thanks.

Here is a way to do it
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:background="#FF0000">
<!-- TO ADD CONTENT HERE -->
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:background="#FFFF00"
android:weightSum="0.5">
<!-- TO ADD CONTENT HERE -->
</LinearLayout>
</LinearLayout>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:background="#000000"
android:text="TEST"
android:textColor="#FFFFFF"/>
</RelativeLayout>
OUTPUT:
You can change the layout height from android:layout_weight="0.5"

you can use RelativeLayout for your parent and try adding twoLinearLayouts , one below another and set their heights, now place a Button in your RelativeLayout and set android:layout_centerInParent="true" for your Button .
and if you want to use weight for layouts, instead of adding two LinearLayout to your RelativeLayout, add one LinearLayout with weightSum=100 and then add two LinearLayouts to it with custom weights.
for your case , you have to do sth like this :
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="100" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="20"
android:background="#f00" >
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="80"
android:background="#0f0" >
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="100" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="20" >
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center" >
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="test" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>

Four buttons menu using LinearLayout

I`m trying to create a menu that will hold four ImageButtons next to each other and will be relative in size in order to support different screens resolutions.
Below the menu I need an additional small image button.
Here how it looks in Eclipse:
http://i.stack.imgur.com/QMvcs.jpg
This is how i built it in menu.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/rlMain"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/abs__background_holo_dark"
android:orientation="vertical"
android:weightSum="1" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.95"
android:orientation="vertical"
android:weightSum="1" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.5"
android:orientation="horizontal"
android:weightSum="1" >
<ImageButton
android:id="#+id/newsItem"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:onClick="NewsClicked" />
<ImageButton
android:id="#+id/imageItem"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:onClick="TeamsClicked" >
</ImageButton>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.5"
android:orientation="horizontal"
android:weightSum="1" >
<ImageButton
android:id="#+id/chatItem"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:onClick="ChatClicked" >
</ImageButton>
<ImageButton
android:id="#+id/teamItem"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.5"
android:onClick="ImagesClicked" />
</LinearLayout>
</LinearLayout>
<ImageButton
android:layout_weight="0.05"
android:id="#+id/orderDigital"
android:layout_width="match_parent"
android:layout_height="0dp"
android:onClick="DigitalClicked" />
</LinearLayout>
But on my phone it displays like this:
http://i.stack.imgur.com/cyQoc.png
Can you suggest another way to build that?

Problem solved.
I forgot that there was another layout(master page) that actually parent of main layout and it was with height=wrap content
Thanks :)