Develop Reference

Initializing ImageView position within layout

I have a RelativeLayout with a custom ImageView named ZoomieView that allows me to pinch-to-zoom on an image. I want to allow the image to grow the entire size of my screen so I set the width and height of ZoomieView to match_parent. Now I want to also add a header and footer to the RelativeLayout such that the ZoomieView sits in between the header and footer like this:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorBgBlackTintDarkest"
android:id="#+id/full_displayer_master_container"
android:orientation="vertical">
<!-- Submission header -->
<LinearLayout
android:id="#+id/big_display_title_container"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentTop="true"
android:orientation="vertical">
</LinearLayout>
<!-- Image zoom view-->
<com.sometimestwo.moxie.ZoomieView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/full_displayer_image_zoomie_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"/>
<!-- footer -->
<LinearLayout
android:id="#+id/full_display_snack_bar_container"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:background="#drawable/snack_bar_selector"
android:clickable="true"
android:orientation="horizontal">
</LinearLayout>
</RelativeLayout>
If I have a small image, this works fine as the image is small enough that it does not cover up the header/footer but when I try loading a large image, the header and footer are covered up since my height/width are match_parent.
I need the height/width to remain match_parent but I also do not want the header/footer to be covered when the view is loaded (it's fine if the header/footer is covered later when the user zooms in on the picture, though).
Is there a way I can resize my image such that ZoomieView is centered between my header and footer when the view loads but allows the ZoomieView to cover up the header/footer when I zoom in to the image?
Adding android:layout_below="header" android:layout_above="footer" to my ZoomieView would not work because it would not allow the ZoomieView to grow the entire screen size when zooming in.
This is what I have now (bad):
This is how I want the views to be loaded(better):

Change the Layout and use android:layout_weight="0" property
Try This hope it will work...!
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorBgBlackTintDarkest"
android:id="#+id/full_displayer_master_container"
android:orientation="vertical">
<!-- Submission header -->
<LinearLayout
android:id="#+id/big_display_title_container"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentTop="true"
android:layout_weight="0"
android:orientation="vertical">
</LinearLayout>
<!-- Image zoom view-->
<com.sometimestwo.moxie.ZoomieView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/full_displayer_image_zoomie_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:layout_gravity="center"/>
<!-- footer -->
<LinearLayout
android:id="#+id/full_display_snack_bar_container"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:background="#drawable/snack_bar_selector"
android:clickable="true"
android:layout_weight="2"
android:orientation="horizontal">
</LinearLayout>
</LinearLayout>

Try this...it might help you.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorBgBlackTintDarkest"
android:id="#+id/full_displayer_master_container"
android:orientation="vertical">
<!-- Submission header -->
<LinearLayout
android:id="#+id/big_display_title_container"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentTop="true"
android:orientation="vertical">
</LinearLayout>
<!-- Image zoom view-->
<com.sometimestwo.moxie.ZoomieView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/full_displayer_image_zoomie_view"
android:layout_above="#+id/full_display_snack_bar_container" //add this line
android:layout_below="#+id/big_display_title_container" //add this line
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"/>
<!-- footer -->
<LinearLayout
android:id="#+id/full_display_snack_bar_container"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:background="#drawable/snack_bar_selector"
android:clickable="true"
android:orientation="horizontal">
</LinearLayout>

Place imageview with fixed footer android

I want to place image approx full height and a fixed footer.
I tried this code.
Image is dynamically update using from gallery
<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="com.aaaa.com.EditView">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
tools:layout_editor_absoluteY="0dp"
tools:layout_editor_absoluteX="8dp"
android:layout_alignParentBottom="true"
android:id="#+id/footerEdit"
android:weightSum="2">
<Button
android:id="#+id/addBackground"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/icon_content" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/takePhoto"
android:background="#drawable/icon_camera"/>
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/imgview"/>
</RelativeLayout>
I want to scale image entire screen but leave footer area
Please guide

When you are working with relative layouts, you still can manage Header and Footer (this last for you) indicating and order between the layouts.
For your main content area add:
android:layout_above="#id/lytFooter"
to be set stacked over your footer
and
android:layout_below="#id/lytHeader"
to be set stacked below your header.
For your main content area set height to match_parent.
Hope it helps.

Android layout place a layout in the middle of another two layouts

Hello I have to create the UI like bellow,(picture attached) using regular Android layouts. I got header, footer and middle areas along with a image view.
According to the picture : Area A and Area C is similar height (20% of screen) and image view should be placed always in the middle of Area B and Area C.
My current xml code is like this
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<LinearLayout
android:id="#+id/show_contact_bottomArea"
android:layout_width="match_parent"
android:layout_height="120dp"
android:orientation="vertical"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
</LinearLayout>
<LinearLayout
android:id="#+id/show_contact_middleArea"
android:layout_width="match_parent"
android:layout_height="150dp"
android:orientation="vertical"
android:background="#color/grayContact"
android:layout_below="#+id/show_contact_headerArea"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_above="#+id/show_contact_bottomArea">
</LinearLayout>
<LinearLayout
android:id="#+id/show_contact_headerArea"
android:layout_width="match_parent"
android:layout_height="120dp"
android:orientation="vertical"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"></LinearLayout>
<ImageView
android:layout_width="150dp"
android:layout_height="150dp"
app:srcCompat="#drawable/common_google_signin_btn_icon_dark_focused"
android:id="#+id/imageView2"
android:layout_marginBottom="40dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
I gave
marginBottom="40dp"
for image view to push it upwards, which is not a good practice. what is the best way to place the image view in the center of Area B's and Area C's border.
Also currently I gave
android:layout_height="120dp"
for Area A & Area B's height but ideally both should be 20%(each) of the screen, how to achieve that also?

You can give weights 20 % to each A and C. This way they will occupy 20% of top and bottom respectively. Assign rest 60% of height to B.
For imageView, you can place entire layout in Coordinate layout and assign anchor to footer.
Her is code snippet
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="10">
<LinearLayout
android:id="#+id/show_contact_bottomArea"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_weight="2"
android:background="#color/primary_light"
android:orientation="vertical">
</LinearLayout>
<LinearLayout
android:id="#+id/show_contact_middleArea"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_above="#+id/show_contact_bottomArea"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="#+id/show_contact_headerArea"
android:layout_weight="6"
android:background="#color/holo_blue_light"
android:orientation="vertical">
</LinearLayout>
<LinearLayout
android:id="#+id/show_contact_headerArea"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_weight="2"
android:background="#color/primary"
android:orientation="vertical"></LinearLayout>
</LinearLayout>
<ImageView
android:id="#+id/imageView2"
android:layout_width="150dp"
android:layout_height="150dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="40dp"
app:layout_anchor="#+id/show_contact_headerArea"
app:layout_anchorGravity="center_horizontal|top"
app:srcCompat="#drawable/header_record" />
</android.support.design.widget.CoordinatorLayout>
Result :- I have colored different section with different color code.

use weight for giving exact portion of Area and Frame Layout
for eg:
weight sum =4 have to give in parent Linear layout
Area A give 1
Area b give 2
Area c give 1
After Area B add image View with top -(height you want to appear in B's portion)

Eliminate space in Android Layout

I am trying to make a very simple Layout like this:
An image occupying the width of the screen, and a button occupying the width of the screen coming right next to it without any space.
Here is the code I have, it is next to trivial
<?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="wrap_content"
android:orientation="vertical"
tools:context="com.andrew.question.InitialActivity">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:padding="0dp"
android:src="#drawable/bg" />
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:padding="0dp"
android:text="Hello, I am a Button" />
</LinearLayout>
The problem is, the button does not show up, it shows the image with some space
The emulator is running with screen size 1080 x 1920, and the image has size 720 x 990, if we scale that up, it should be 1080 x 1485, leaving a lot of space for the button, but the image occupied in the middle of the screen somehow that I do not understand.
This is how a screen capture on the emulator look like:
Next, I tried to swap the order of the button and the image (just for the sake of experimenting), I see something like this:
I get this:
<?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="wrap_content"
android:orientation="vertical"
tools:context="com.andrew.question.InitialActivity">
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:padding="0dp"
android:text="Hello, I am a Button" />
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:padding="0dp"
android:src="#drawable/bg" />
</LinearLayout>
Now I figured what happened, it appears that we have lot of spaces between the button and the image and therefore the button have no space. But where does those spaces come from? I wanted them to stick together.
The full source code of this experiment can be found in
https://github.com/cshung/MiscLab/tree/master/Question

The problem occurs here because the LinearLayout container has a height with wrap_content and the system extends the ImageView at its max and then display the TextView below it (thus below the screen height).
To get the right layout, you have to use layout_weight in the child views as follows:
<!-- fill the entire height -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
...>
<!-- take 90% of container -->
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.9"
... />
<!-- take 10% of container -->
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.1"
... />
</LinearLayout>
Then, in order to have "no space" for the image, you have to play with the attribute scaleType (see this example) as the following:
Either force the image to fit the widht/height:
<ImageView
...
android:scaleType="fitXY"/>
Or show the center and fill the w/h:
<ImageView
...
android:scaleType="centerCrop"/>

Your drawable/bg is being scaled to fit in id/imageView. The space you're getting is just the window's background not being covered by the image. Change ScaleType of your ImageView to FIT_XY, CENTER_CROP or other and watch a result. See: http://developer.android.com/reference/android/widget/ImageView.ScaleType.html

Your easiest option will probably be to use a RelativeLayout instead of a LinearLayout. I think this is the direction Android has been going lately. Everything seems to be RelativeLayout based. For instance, when you make a new layout in Android Studio, I believe it defaults to RelativeLayout. It used to be LinearLayout in the eclipse extension a while back.
Relative Layout
Using a relative layout instead you should have the following:
<?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="wrap_content"
tools:context="com.andrew.question.InitialActivity">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:padding="0dp"
android:src="#drawable/bg" />
<Button
android:id="#+id/button"
android:layout_below="#id/imageView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="0dp"
android:padding="0dp"
android:text="Hello, I am a Button" />
</RelativeLayout >
Note that I simply changed LinearLayout to RelativeLayout, removed the setOrientation and then added the following line to your button.
android:layout_below="#id/imageView"

First of all your image is too big so it basically takes up all of the screen space in the first place and pushes the button down the viewable region.There is no need to modify the padding or margin as it is in the LinearLayout and it places all child views one after the other.
Set a desired height to the image view and also a scale type to get what you are expecting.
<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="wrap_content"
android:orientation="vertical"
tools:context="com.andrew.question.InitialActivity">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:scaleType="centerCrop"
android:layout_height="300dp"
android:src="#drawable/bg" />
<Button
android:id="#+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Hello, I am a Button" />
</LinearLayout>
Screen shot

How to make View fill remaining space

So I have a two "sections" to my screen. I have the top section which is a ScrollView and a bottom section which is random text. The random text at the bottom will always be changing sizes, so sometimes it can take 40dp, sometimes 20dp, etc.
My question is, is there a way to make the bottom part dynamic (without loss of text) and make the top scrollview adapt to the new size and restricts its own size to "fill the remaining space" based on what portion the bottom part is using?
Like this:
As you can see, the scroll view just fills the remaining space available.
I'm searching for a solution using XML only
Need HELP!

You can try this.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/bottomTextView">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="500dp"
android:background="#android:color/holo_red_dark"
android:text="Test" />
</LinearLayout>
</ScrollView>
<TextView
android:id="#+id/bottomTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#android:color/darker_gray"/>
Or
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ScrollView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="500dp"
android:background="#android:color/holo_red_dark"
android:text="Test" />
</LinearLayout>
</ScrollView>
<TextView
android:id="#+id/bottomTextView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/darker_gray"/>

Wrap both Views in a vertical LinearLayout;
The view which is at the top: height = "0dp", weight = 1
And the view which is in the bottom: height = "wrap_content"