Full screen background image in an activity

Question

I see many applications that use a full-screen image as background  This is an example     I want to use this in a project  the best way I ve found so far to do this is to use an image with a large size  put it in a ImageView and use android  adjustViewBounds  true  to adjust the margins  The problem is that if a screen with a very high resolution  the image falls short   Another option I thought of is to use the image in a FrameLayout  with match parent in width and height as background    this stretches the image  but I think the result is not very good   How would you do it

User · Accepted Answer

There are several ways you can do it   Option 1   Create different perfect images for different dpi and place them in related drawable folder  Then set   android background   drawable your image   Option 2   Add a single large image  Use FrameLayout  As a first child add an ImageView  Set the following in your ImageView   android src   drawable your image  android scaleType    centerCrop

User · Answer

Another option is to add a single image  not necessarily big  in the drawables  let s name it backgroung jpg   create an ImageView iv background at the root of your xml without a  src  attribute  Then in the onCreate method of the corresponding activity          create a full screen window        requestWindowFeature Window FEATURE NO TITLE       getWindow   setFlags WindowManager LayoutParams FLAG FULLSCREEN              WindowManager LayoutParams FLAG FULLSCREEN       setContentView R layout your activity           adapt the image to the size of the display        Display display   getWindowManager   getDefaultDisplay        Point size   new Point        display getSize size       Bitmap bmp   Bitmap createScaledBitmap BitmapFactory decodeResource        getResources   R drawable background  size x size y true           fill the background ImageView with the resized image        ImageView iv background    ImageView  findViewById R id iv background       iv background setImageBitmap bmp     No cropping  no many different sized images  Hope it helps

User · Answer

What about  android background   drawable your image   on the main layout of your activity   This way you can also have different images for different screen densities by placing them in the appropriate res drawable-  dpi folders

User · Answer

If you have bg png as your background image then simply    lt 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      android background   drawable bg      tools context   MainActivity   gt        lt TextView         android layout width  wrap content          android layout height  wrap content          android layout centerHorizontal  true          android layout centerVertical  true          android text   string hello world   gt   lt  RelativeLayout gt

User · Answer

If you want your image to show BEHIND a transparent Action Bar  put the following into your Theme s style definition    lt item name  android windowActionBarOverlay  gt true lt  item gt    Enjoy

User · Answer

It s been a while since this was posted  but this helped me   You can use nested layouts  Start with a RelativeLayout  and place your ImageView in that    Set height and width to match parent to fill the screen   Set scaleType  centreCrop  so the image fits the screen and doesn t stretch   Then you can put in any other layouts as you normally would  like the LinearLayout below   You can use android alpha to set the transparency of the image    lt 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  gt      lt ImageView     android layout width  match parent      android layout height  match parent      android scaleType  centerCrop      android src   drawable image      android alpha  0 6   gt      lt LinearLayout     android layout width  match parent      android layout height  match parent      android orientation  vertical      tools context   MainActivity  gt          lt TextView         android layout width  wrap content          android layout height  wrap content          android text  Hello   gt          lt TextView         android layout width  wrap content          android layout height  wrap content          android text  There   gt       lt  LinearLayout gt   lt  RelativeLayout gt

User · Answer

You should put the various size images into the followings folder  for more detail visit this link   ldpi mdpi hdpi xhdpi xxhdpi   and use RelativeLayout or LinearLayout background instead of using ImageView as follwoing example   lt  xml version  1 0  encoding  utf-8   gt   lt RelativeLayout  xmlns android  http   schemas android com apk res android   android layout width  fill parent   android layout height  fill parent   android orientation  vertical   android background   drawable your image  gt    lt  RelativeLayout gt

User · Answer

The easiest way   Step 1  Open AndroidManifest xml file  You can see the file here   Step 2  Locate android theme   style AppTheme   gt   Step 3  Change to android theme   style Theme AppCompat NoActionBar   gt   Step 4  Then Add ImageView  amp  Image  Step 4  That s it

User · Answer

three step for put background  1 you should choose your like picture  for example  enter image description here  2 Then you copy this picture in drawable      warning  you should choose types short for name picture   enter image description here  3 you go to page xml Intended and write    android background  id picture  for example my picture id is  drawable download   enter image description here  finish

User · Answer

use this  android background   drawable your image    in your activity very first linear or relative layout

User · Answer

In lines with the answer of NoToast  you would need to have multiple versions of  your image  in your res drawable-ldpi mdpi  hdpi  x-hdpi  for xtra large screens   remove match parent and keep android  adjustViewBounds  true

User · Answer

Add android background   drawable your image  inside your Relativelayout Linearlayout Worked

User · Answer

Working  you should tryout this   android src   drawable img

[android] Full screen background image in an activity

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