Develop Reference

Android Layout Weight Exactly Twice Of Others

I would like to simply divide a Linear Layout to 3 piece. I did something as in the code below. If I change the weight of second inner layout anything else than 2, it works. But if I change it to 2(two), the second inner layout doesn't appear in the design ?
<LinearLayout
android:id="#+id/Main"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:background="#ffffff"
android:orientation="vertical"
android:gravity="center"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="2"
android:gravity="center"
>
<ImageView
android:id="#+id/HomePageIcon"
android:layout_height="match_parent"
android:layout_width="wrap_content"
android:adjustViewBounds="true" />
</LinearLayout>
<LinearLayout
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingHorizontal="33dp"
android:paddingBottom="30dp"
>
</LinearLayout>

Use it like below height set to 0dp when orientation is vertical.
<LinearLayout
android:id="#+id/Main"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:background="#ffffff"
android:orientation="vertical"
android:gravity="center"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="#color/colorAccent"
android:layout_weight="1"
>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2"
android:background="#color/background_dark"
android:gravity="center"
>
<ImageView
android:id="#+id/HomePageIcon"
android:layout_height="match_parent"
android:layout_width="wrap_content"
android:adjustViewBounds="true" />
</LinearLayout>
<LinearLayout
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="#color/colorPrimaryDark"
android:orientation="vertical"
android:paddingHorizontal="33dp"
android:paddingBottom="30dp"
>
</LinearLayout>

Use the Constraint Layout and forget the Linear and Relative layout.

Pls try this,
<LinearLayout
android:id="#+id/Main"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:background="#ffffff"
android:orientation="vertical"
android:gravity="center"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:gravity="center"
>
<ImageView
android:id="#+id/HomePageIcon"
android:layout_height="match_parent"
android:layout_width="wrap_content"
android:adjustViewBounds="true" />
</LinearLayout>
<LinearLayout
android:layout_weight="1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:orientation="vertical"
android:paddingHorizontal="33dp"
android:paddingBottom="30dp"
>
</LinearLayout>

As you are using layout_weight that means your inner layouts will take the height as much as is available to it. So, in that case there is no need of using layout_height = "wrap_content" just change it to android:layout_height="0dp"
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/Main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:gravity="center"
android:orientation="vertical"
android:weightSum="4">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"></LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2"
android:gravity="center">
<ImageView
android:id="#+id/HomePageIcon"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:adjustViewBounds="true" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="vertical"
android:paddingBottom="30dp"
android:paddingHorizontal="33dp"></LinearLayout>
</LinearLayout>

When you are using weight than use 0dp to android:layout_width or android:layout_height which you want for affect using weight. And its good to use android:weightSum in parent layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/Main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:gravity="center"
android:orientation="vertical"
android:weightSum="4">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"></LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2"
android:gravity="center">
<ImageView
android:id="#+id/HomePageIcon"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:adjustViewBounds="true" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="vertical"
android:paddingBottom="30dp"
android:paddingHorizontal="33dp"></LinearLayout>

LinearLayout position is shifting to up , When video is playing in Videoview

When the application is launched layout is fine. But when the video is playing. the Layout of the button is moving up.
How to resolve this?
When the application is launched?
When the video is playing the button is moving upwards
Below I had placed the layoutfile.xml which i had been working on.
<?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="fill_parent"
android:weightSum="1"
android:baselineAligned="false"
android:orientation="horizontal">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="0.3"
android:background="#android:color/background_dark">
<ListView
android:id="#+id/VideoList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/darker_gray"
android:foreground="#android:color/background_light" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:orientation="vertical"
android:weightSum="1"
android:layout_weight="0.7">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.9"
android:layout_gravity="center_vertical">
<VideoView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/videoView"
android:layout_gravity="center" />
</FrameLayout>
<Button
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.1"
android:text="New Button"
android:id="#+id/button"/>
</LinearLayout>
</LinearLayout>

You should make the LinearLayout(that contains FrameLayout and Button) height match_parent

No need for weight-sum, just make the layout_weights integers like 1 and 9 instead of 0.1 and 0.9
Also, fill_parent is deprecated, use match_parent instead.
You have a LinearLayout with single child. No need, just put ListView with same layout_params.
Lastly, your vertical LinearLayout on the right should have a height of match_parent.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:baselineAligned="false"
android:orientation="horizontal">
<ListView
android:id="#+id/VideoList"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="3"
android:background="#android:color/darker_gray"
android:foreground="#android:color/background_light" />
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="7">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="9"
android:layout_gravity="center_vertical">
<VideoView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/videoView"
android:layout_gravity="center" />
</FrameLayout>
<Button
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:text="New Button"
android:id="#+id/button"/>
</LinearLayout>
</LinearLayout>
Edit: Fixed layout Params on LinearLayout.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:baselineAligned="false"
android:orientation="horizontal">
<ListView
android:id="#+id/VideoList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="3"
android:background="#android:color/darker_gray"
android:foreground="#android:color/background_light" />
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_weight="7">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="9"
android:layout_gravity="center_vertical">
<VideoView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/videoView"
android:layout_gravity="center" />
</FrameLayout>
<Button
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:text="New Button"
android:id="#+id/button"/>
</LinearLayout>
</LinearLayout>
I have done changes in listview "layout_width" and "layout_height" both should be match_parent ,Now it is working

Position four relative layouts equally on screen

I'm trying to position four RelativeLayouts on the screen equally as shown on the image below. I just can't seem to get anywhere. Each one will contain a text label and a button centred in their quadrant. I've tried placing the four inside RelativeLayout with the alignComponent values set appropriately and alignParent values set to Left/Right and Top/Bottom. I've also tried with just the alignComponent set and just alignParent set but to no avail.
It should look like this,

Since you want to use RelativeLayout, the easiest way is to use vertical and horizontal struts (which are invisible) and use those as anchors for your four RelativeLayouts children. This approach is definitely more efficient than nested LinearLayouts with weights. You should probably read this before nesting LinearLayouts with weights.
A snippet from the above link:
Layout weights require a widget to be measured twice. When a LinearLayout with non-zero weights is nested inside another LinearLayout with non-zero weights, then the number of measurements increase exponentially.
So for using RelativeLayouts with struts, your XML could be like this:
<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="${relativePackage}.${activityClass}" >
<View
android:id="#+id/horizontalStrut"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_centerVertical="true" />
<View
android:id="#+id/verticalStrut"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_centerHorizontal="true" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#id/horizontalStrut"
android:layout_toLeftOf="#id/verticalStrut"
android:background="#color/red" >
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#id/horizontalStrut"
android:layout_toRightOf="#id/verticalStrut"
android:background="#color/black" >
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/horizontalStrut"
android:layout_toLeftOf="#id/verticalStrut"
android:background="#color/blue" >
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#id/horizontalStrut"
android:layout_toRightOf="#id/verticalStrut"
android:background="#color/green" >
</RelativeLayout>
</RelativeLayout>

Try This Layout.. It Could Help You...
<?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" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal" >
<RelativeLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#color/black" >
<!-- put your stuff here -->
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#color/red" >
<!-- put your stuff here -->
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal" >
<RelativeLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#color/white" >
<!-- put your stuff here -->
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#color/green" >
<!-- put your stuff here -->
</RelativeLayout>
</LinearLayout>
</LinearLayout>
Sample Output..

You can easily done it using LinearLayout or tableLayout,
SAmple shows using LinearLayout
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="horizontal"
android:background="#FF0000" >
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="horizontal"
android:background="#331323" >
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="horizontal"
android:background="#662200" >
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="horizontal"
android:background="#FF8800" >
</LinearLayout>
</LinearLayout>

You can use LinearLayout then set android:weightSum for your parent layout then you can set now your layout_weight for your quadrants.Like this..
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum = "2"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:weightSum="2"
android:orientation="horizontal" >
<RelativeLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#color/black" >
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#color/red" >
</RelativeLayout>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:weightSum="2"
android:orientation="horizontal" >
<RelativeLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#color/white" >
</RelativeLayout>
<RelativeLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#color/green" >
</RelativeLayout>
</LinearLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#0B6121"
android:orientation="vertical" >
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical"
android:background="#DF013A">
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="horizontal" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical"
android:background="#0080FF">
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#A901DB"
android:orientation="vertical" >
</LinearLayout>
</LinearLayout>

android how to create multiple equal sized elements without linear layout

I need to create a layout that contains 16 equally sized FrameLayout elements. I've seen lots of replies about this and how "Nested layout weights are bad for performance." What is a better way to solve this problem and still have the advantages of dynamic sizing of elements.
Thank you
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="4"
android:orientation="horizontal"
tools:context="${packageName}.${activityClass}" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:weightSum="4"
android:orientation="vertical" >
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:weightSum="4"
android:orientation="vertical" >
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:weightSum="4"
android:orientation="vertical" >
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:weightSum="4"
android:orientation="vertical" >
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" >
</FrameLayout>
</LinearLayout>
</LinearLayout>
Mostly I just wanted to say thanks for the suggestions. I spent a week or more trying to find a solution that worked and finally decided to go ahead with development and see what the performance was like. The main problem was that I wanted the app to work on multiple devices and resize/handle orientation change and I couldn't find any suitable solution.
At this point everything is working. In landscape mode I have 2 columns x 3 rows that contain 18 equal sized cells each with an image and frame. Performance seems to be ok on everything I've tried from a cheap cell phone and generic 7" tablet up to a nexus-7.

What about using a GridView? You might have to google a bit so figure out how you can make the items resize according to the screen width, but i think it's possible. TableLayout would work too, but GridView seems to be cleaner.

How to set both width and height of layouts as percentages in android?

I need to create a horizontal layout as follows :
I can set the total width of the layout of C using android:layout_width="match_parent" but I'm completely stumped at setting the rest of the layouts. Any help is highly appreciated.
The whole app is set to run on a horizontal layout only, if that helps in decide what method to set the layouts.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:weightSum="100" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="90"
android:orientation="horizontal"
android:weightSum="100" >
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="50"
android:background="#FF0000" >
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_weight="50"
android:background="#00FF00" >
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="10"
android:background="#FFFF00" >
</LinearLayout>
</LinearLayout>

The trick is to use LinearLayout's with a certain weight like this:
<?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="10">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="horizontal">
<View
android:id="#+id/view_A"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1" />
<View
android:id="#+id/view_B"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1" />
</LinearLayout>
<View
android:id="#+id/view_C"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="9" />
</LinearLayout>