Develop Reference

Native Android: Create dynamically a grid-like scrollable layout with equal width buttons

I am trying to create a layout as per this picture (paint'ed).
Layout Design
Target level is API 17. This has to be created programmatically, not using XML. This has to be a responsive design.
I extensively researched and attempted other partially similar situations on stackoverflow, using GridLayout, TableLayout, GridView, various layout parameters, gravity, weight, view nesting and so on. However,
(a) I can't get the text buttons width to fill the available width real estate as per device screen size and orientation. Buttons with shorter texts are coming with shorter width.
(b) The plus, minus and number buttons are of fixed height and width irrespective of screen sizes and orientation. But they are not aligning with the text button in the left on the same row. only the bottom few pixels are visible.
I would appreciate any code snippet that can achieve the above layout. Thanks a million.
UPDATE:
Following inputs from #tiny-sunlight, I did this. Next I will recreate this programmatically.
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/layoutTable"
android:padding="5dp"
android:orientation="vertical"
android:gravity="center"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/layoutRow"
android:padding="5dp"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_marginEnd="10dp"
android:layout_weight="17"
android:text="This is my button"
android:textSize="15sp"
android:textAllCaps="false"
android:gravity="start"
android:layout_width="0dp"
android:layout_height="40dp" />
<Button
android:layout_marginEnd="5dp"
android:layout_weight="1"
android:text="-"
android:textSize="15sp"
android:textStyle="bold"
android:layout_width="40dp"
android:layout_height="40dp" />
<TextView
android:layout_marginEnd="5dp"
android:layout_weight="1"
android:layout_marginTop="0dp"
android:paddingTop="10dp"
android:text="0"
android:textSize="15sp"
android:gravity="center"
android:layout_width="40dp"
android:layout_height="40dp" />
<Button
android:layout_weight="1"
android:text="+"
android:textSize="15sp"
android:textStyle="bold"
android:layout_width="40dp"
android:layout_height="40dp" />
</LinearLayout>
</LinearLayout>
</ScrollView>

Try to build layout below programmatically.
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:padding="5dp"
android:orientation="vertical"
android:gravity="center"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:padding="5dp"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_marginRight="10dp"
android:layout_weight="1"
android:text="1111"
android:layout_width="0dp"
android:layout_height="40dp" />
<ImageView
android:layout_marginRight="5dp"
android:src="#mipmap/ic_launcher"
android:layout_width="40dp"
android:layout_height="40dp" />
<TextView
android:layout_marginRight="5dp"
android:background="#44bb11"
android:layout_marginTop="0dp"
android:paddingTop="10dp"
android:text="11"
android:layout_width="40dp"
android:layout_height="40dp" />
<ImageView
android:src="#mipmap/ic_launcher"
android:layout_width="40dp"
android:layout_height="40dp" />
</LinearLayout>
</LinearLayout>
</ScrollView>

You can use a recycler view, which will provide you scrolling option plus bind views on the fly for you.
So load a linear layout (orientation horizonal) into the recycler view. now for the layout, it then becomes easier. You need a textview, button,textview,button.
For each of these textview and buttons, set widht = 0dp and weight as 7,1,1,1 respectively i.e. your leftmost textview occupy 70% of width whereas all other occupy 10%. Obviously you can change these weights as per your requirements. Thats it for the layout.
Now just fill your data using the adapter.

Align multipile images evenly horizontaly

I have 2 image views in a linear layout like so:
<LinearLayout
style="#style/home_icon_row"
android:orientation="horizontal">
<ImageView
android:id="#+id/ibtn_home_bus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ico_bus_selector" />
<ImageView
android:id="#+id/ibtn_home_butoday"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ico_butoday_selector" />
</LinearLayout>
How can i align the two images so that they are evenly placed within the linear layout. Something similar to "justified text" so that it has equal spacing on the left and right of the image from each other and the border of the screen.

it's not the best solution, but it should work:
<LinearLayout
style="#style/home_icon_row"
android:orientation="horizontal">
<View
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="0dp"
android:enable="false"
android:focussable="false"
android:clickable="false"
/>
<ImageView
android:id="#+id/ibtn_home_bus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ico_bus_selector" />
<View
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="0dp"
android:enable="false"
android:focussable="false"
android:clickable="false" />
<ImageView
android:id="#+id/ibtn_home_butoday"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ico_butoday_selector" />
<View
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="0dp"
android:enable="false"
android:focussable="false"
android:clickable="false" />
</LinearLayout>
if this is for some kind of landing it's ok but if it's a hard used layout think about implementing it dinamically via javacode to make it faster.
EDIT: i added 3 attributes ( enable, focussable, clickable ) to disable the placehodler view so that they'll be considered only at measures/layout time, but not during events handling.

// try this way here is alternative to use two sub linear layout rather three View.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
style="#style/home_icon_row"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center">
<ImageView
android:id="#+id/ibtn_home_bus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ico_bus_selector" />
</LinearLayout>
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center">
<ImageView
android:id="#+id/ibtn_home_butoday"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ico_butoday_selector" />
</LinearLayout>
</LinearLayout>

You should be able to get similar effect by using layout_width="0dp", layout_weight="1" and scaleType="centerInside" for both ImageViews.
The only difference is that space between the images can be bigger.

<LinearLayout
style="#style/home_icon_row"
android:orientation="horizontal"
android:padding="#dimen/padding">
<ImageView
android:id="#+id/ibtn_home_bus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ico_bus_selector"
android:layout_marginRight="#dimen/padding"/>
<ImageView
android:id="#+id/ibtn_home_butoday"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/ico_butoday_selector" />
</LinearLayout>

layout element control in Android

I want to layout 3 element Button , TextView , Button on the bar like this
[Button1] --- TextView --- [Button2]
2 button are always anchor fixed in left and right screen(padding 4dp) ,and TextView is center (change width depend on screen size),They should be apply for all screen size(not scaled in larger screen). How can I do it??

It would look something like this.-
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true" />
</RelativeLayout>
Notice that you still need to set other properties such as texts, ...

You can use LinearLayout with android:weightSum
Try Like this, By using android:weightSum, you can divide how much space for Button and textView.. And it will automatically adjust in all the density devices.
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:weightSum="10" >
<Button
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:layout_margin="4dp"
android:layout_weight="3"
android:text="LeftButton" />
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:padding="4dp"
android:layout_weight="4"
android:gravity="center"
android:text="Center TextView text" />
<Button
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_margin="4dp"
android:layout_weight="3"
android:text="Right Button" />
</LinearLayout>

android:weightSum work fine for me, I resolved all my troubles :)

Align android text and images in listview to be the same

I need some help with alignment of custom list view with image and text.
I'm trying with this:
<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="wrap_content" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_weight="1"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_vertical|center"
android:paddingTop="20dp"
android:layout_weight="2"
android:text="TextView" />
</LinearLayout>
And I thought that weight is keeping the ratio of element, not the content of the element, but apparently it takes care about things inside the text view, so my list looks messy.
How to align it to be the same, no matter how long the text is in text view?
So the green line should be straight vertical line, no matter of text on right hand side.
Tnx

Basically, your layout should be this:
<TextView
android:id="#+id/textView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical|center"
android:paddingTop="20dp"
android:layout_weight="2"
android:drawableLeft="#drawable/ic_launcher"
android:text="TextView" />
The android:drawableLeft="#drawable/ic_launcher" defines the leftmost compound drawable, and it will align nicely.

Remove android:layout_weight.
This will align you images since you define the width.
If you want to align the text too, remove android:gravity or set it to left.
You can add android:marginRight to the imageView for better readability.

use
android:layout_height="0dp"
in your textView. it will give fixed size to all your elements. here, the size shared by the weight param is variable as it depends on the amount of text.

Try this instead:
<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="wrap_content" >
<ImageView
android:id="#+id/imageView1"
android:layout_width="0dp"
android:layout_height="50dp"
android:layout_gravity="center_vertical"
android:layout_weight="1"
android:src="#drawable/ic_launcher" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_weight="2"
android:text="TextView" />
</LinearLayout>

how to separate textviews in android?

It is a simple question but I don't know how to do it because I'm new in android.
I have two TextViews in a relative layout and when the first TextView getting bigger it writes on the other TextView which I want to avoid it. How can I do it ?
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="first"
android:gravity="left"/>
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="second"
android:layout_alignParentRight="true"/>
</RelativeLayout>
but when the text = firstfirstfirst.... it overrides the second textview.

You need to give you TextViews ids. Since you're using a RelativeLayout you can use layout_toLeftOf and layout_toRightOf, but you only need to use one of them.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_toLeftOf="#+id/textView2"
android:gravity="left"
android:text="firstfirstfirstfirstfirstfirsitseirodsifjdsoijfoisddsefdfadafdafad" />
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_alignParentRight="true"
android:text="second" />

give some advice:
first you can set the left textview's max width using android:maxWidth="" to control the left size, but if the size bigger than the size the text will become like this:text...
or you need make the left and right area cleanly, for example:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:weightSum="2" >
<TextView
android:id="#+id/left"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_weight="1"
android:text="firstdasssssssssssssssssssssssssssssssssssssssssssssssssssssssss" />
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_weight="1"
android:gravity="left"
android:text="secondsdasdasdarerewrwcxcadasdasdsadsdasdasdadadsd" />
it make the left and right half area, also you can change the android:weightSum size.