Develop Reference

Sticking image to bottom of view?

I have designed a splash screen in Adobe XD as shown:
enter image description here
Now when I exported the parts of the image to android studio, I was unable to make all the images stick to the bottom as in XD. enter image description here
Can someone tell me how I would go about doing that and would be the best ViewGroup for such task?
Here is my XML file:
<?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:id="#+id/linearLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/gradient"
tools:context=".MainActivity">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:src="#drawable/group_1"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="1.0" />
</LinearLayout>

It can be done with either ViewGroup. But the problem is not the the view group - the problem is that you have a single image for the whole content - it is bad practice.
There should be at least 2 images - one for the background and the other is for the content.
It is due to fragmentation issue regarding device screens - there too many different resolution, aspect ratios and dpis to make the single image work properly on them all.
I will show you an example based on your UI with a background and logo image with small images below logo. You just need to separate it into two files - background could be jpg but logo must be png with transparency. In case you will do it - here is how your layout should look like.
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/white"
android:orientation="vertical">
<ImageView
android:id="#+id/background"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
android:src="#drawable/bg" />
<ImageView
android:id="#+id/content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:adjustViewBounds="true"
android:padding="24dp"
android:src="#drawable/logo" />
</FrameLayout>
You may want to experiment with android:padding and android:scaleType to achieve the best result.
Edit
Changed android:layout_height="match_parent" to android:layout_height="wrap_content" - it will work better this way
Hope it helps.

How can I attach this triangle with cardview in Android?

is there any specific component in Android or I have to use view to make triangle (showing in round in image) and attach to card but still as I uploaded image it would not be as same as in image.

Well there are many approaches , but mine is :
You will create an Image like that in photoshop (Of course measure it well and Target all devices (dp)), then place it inside your drawable folder , and call it on top of your CardView.
Suppose that image is called image_traingle.jpg you can do it this way
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:onClick="Contract"
android:layout_margin="10dp"
app:cardCornerRadius="7dp"
android:layout_height="90dp">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Imageview
android:layout_width="wrap_content"
android:gravity="left"
android:background="#color/colorPrimary"
android:src="drawable/image_triangle"
android:layout_height="match_parent" />
.
.
.
</LinearLayout>
</android.support.v7.widget.CardView>

Android, fit an image and textview into the screen

I added a fragment with an ImageView, which is a PNG image, and a TextView just below it.
The fragment is showing fine but when I rotate the screen the image will take most of the screen and the TextView is partially cut.
Here's the code:
<?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">
<ImageView
android:id="#+id/shopping_cart"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="#drawable/shopping_cart" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_below="#id/shopping_cart"
android:text="#string/no_data"
android:gravity="center"/>
</RelativeLayout>
I'm trying to find a way to resize the image in order to show both image and text in the screen

try using a scroll-view as the root element if u want to retain the same image size rather than resizing the image. Here's a small snippet -
<ScrollView
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:fillViewport="true">
<RelativeLayout
android:id="#+id/container"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
(all your view elements)
</RelativeLayout>

<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<LinearLayout
android:id="#+id/text_image_container"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
(Enter view here)
</LinearLayout>

Alright, so firstly ensure that you have the image for the ImageView in all densities. I would suggest that you use this attribute in your ImageView code:
https://developer.android.com/reference/android/widget/ImageView.ScaleType.html
The scale type defines how your image should scale according to the view. I faced a similar issue once, and i was able to solve it using this. Having said that, i have not seen the image you are using, so i cannot be very sure of it. But, i would say that you use:
android:scaleType="centerCrop"
you can find the definition of the attribute on the link provided above. Also, i do not know what devices you are targeting for your app, but its always good to keep views inside a scroll view so that they are visible even on a smaller screen.
Give it a try, if not by centerCrop, then maybe by some other attribute.
Cheers!!

Here is the code:
<?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:gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/shopping_text"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="#string/no_data"/>
<ImageView
android:id="#+id/shopping_cart"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#id/shopping_text"
android:src="#drawable/shopping_cart"/>
</RelativeLayout>

How to solve wrong HEIGHT of IMAGEVIEW in percentage in Android

I´ve tried a few thinks to achive the following thing:
For the discription: I want to have a header with a textview which wraps over the howl page and below this header I want to display three images beside each other. It should be like a image gallery. This layout i want to duplicate.
But my problem is, that I the height of the ImageView is to high and that there is a distance between the sized image and the title. See figure.
On the Left is what I want and on the right is what I got...
Here is my layout code:
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scrollbars="none"
android:layout_weight="1">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
android:textStyle="bold"
android:text="titel"
android:id="#+id/titel"
android:gravity="center"
android:padding="3dp"
android:textSize="18sp"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/titel">
<ImageView
android:layout_width="0dp"
android:layout_weight="0.208"
android:layout_height="match_parent"
android:id="#+id/image1"
android:src="#drawable/1"/>
<ImageView
android:layout_width="0dp"
android:layout_weight="0.389"
android:layout_height="match_parent"
android:id="#+id/image2"
android:src="#drawable/2"/>
<ImageView
android:layout_width="0dp"
android:layout_weight="0.403"
android:layout_height="match_parent"
android:id="#+id/image3"
android:src="#drawable/3"/>
</LinearLayout>
</RelativeLayout>
</ScrollView>

my best guess is because your ImageView scales your image in a way that it fits into the center of the view and leaves empty space around the top and bottom of the view. try adding android:adjustViewBounds="true" to your ImageView in the xml.
on a side note, when debugging view hierarchy, it's almost always gonna be helpful to go to Android Device Monitor, select your devices to the right, and click Dump View Hierarchy for UI Automator. You can easily find out which view is taking the extra space by hovering your mouse over different view elements.

Android image display full height - loaded asynchronously

Hey I begin my adventure with Android and I can't solve one problem.
I am loading pictures from web server using Universal Image Loader. I put them into Relative Layouts which is located in ListView. The effect that I want to achieve, is that pictures are displayed on the entire screen with full width and height with a small box at the bottom.
In the IDE preview, everything looks ok:
But on my phone loaded images look like that. I want them to be displayed with full height. It is necessary to use programming functions to achive it?
Loading images:
imageLoader.displayImage(
wallpapers.get(position).getSrcUrl()//the drawable
, currentWallpaperViewHolder.imageViewWallpaper//the image view
, imageLoaderOptions);//the display options
return itemView;
List view:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<ListView
android:id="#+id/WallpapersListView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
Image view:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/wallpaper_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
android:src="#drawable/test"
/>
<TextView
android:id="#+id/wallpaper_date_for_use"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="20dip"
android:padding="12dip"
android:background="#AA000000"
android:textColor="#ffffffff"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:gravity="center"
android:textStyle="bold"
android:text="Date of use" />
</RelativeLayout>

It's probably because you have a RelativeLayout as your root view. Try wrapping the outside RelativeLayout in a LinearLayout.

You can do this,
Get the device height.
And then set imageView height programatically as the device height.