Change Image of ImageView programmatically in Android

Question

When I change the image programmatically   it shows new image on top of the old image which is set originally in layout file   Here is a snippet of my layout file    lt LinearLayout     android layout width  match parent      android layout height  39dp      android gravity  center vertical   gt       lt ImageView         android id    id qStatusImage          android layout width  16dp          android layout height  16dp          android layout margin  5dp          android background   drawable thumbs down             gt        lt TextView         android id    id grp child          android layout width  fill parent          android layout height  fill parent          android textColor   color radio colors          android textStyle  normal          android background   color grey        gt     lt  LinearLayout gt    And the code that sets the imageView         Override public View getChildView final int groupPosition  final int childPosition          boolean isLastChild  View convertView  ViewGroup parent      Answers             if answersGroup    null                     answersGroup setOnCheckedChangeListener new OnCheckedChangeListener                             Override                     public void onCheckedChanged RadioGroup group  int checkedId                                  int index   answersGroup indexOfChild findViewById answersGroup getCheckedRadioButtonId                                  qImageView    ImageView  V findViewById R id qStatusImage                              if ans   0    ans    5                                    qSV setImageResource 0                                  qImageView setImageResource R drawable thumbs up                                                           else                                qImageView setImageResource R drawable thumbs down                                                      What am I missing

User · Answer

You can use  val drawableCompat   ContextCompat getDrawable context  R drawable ic emoticon happy    or in java java  Drawable drawableCompat   ContextCompat getDrawable getContext    R drawable ic emoticon happy

User · Answer

Short answer Just copy an image into your res drawable folder and use imageView setImageResource R drawable my image    Details The variety of answers can cause a little confusion  We have  setBackgroundResource   setBackgroundDrawable   setBackground   setImageResource   setImageDrawable   setImageBitmap    The methods with Background in their name all belong to the View class  not to ImageView specifically  But since ImageView inherits from View you can use them  too  The methods with Image in their name belong specifically to ImageView  The View methods all do the same thing as each other  though setBackgroundDrawable   is deprecated   so we will just focus on setBackgroundResource    Similarly  the ImageView methods all do the same thing  so we will just focus on setImageResource    The only difference between the methods is they type of parameter you pass in  Setup Here is a FrameLayout that contains an ImageView  The ImageView initially doesn t have any image in it   I only added the FrameLayout so that I could put a border around it  That way you can see the edge of the ImageView     lt  xml version  quot 1 0 quot  encoding  quot utf-8 quot   gt   lt RelativeLayout     xmlns android  quot http   schemas android com apk res android quot      android layout width  quot match parent quot      android layout height  quot match parent quot  gt        lt FrameLayout         android id  quot   id frameLayout quot          android layout width  quot 250dp quot          android layout height  quot 250dp quot          android background  quot  drawable border quot          android layout centerInParent  quot true quot  gt            lt ImageView             android id  quot   id imageView quot              android layout width  quot match parent quot              android layout height  quot match parent quot   gt        lt  FrameLayout gt   lt  RelativeLayout gt   Below we will compare the different methods  setImageResource   If you use ImageView s setImageResource    then the image keeps its aspect ratio and is resized to fit  Here are two different image examples   imageView setImageResource R drawable sky   imageView setImageResource R drawable balloons     setBackgroundResource   Using View s setBackgroundResource    on the other hand  causes the image resource to be stretched to fill the view   imageView setBackgroundResource R drawable sky   imageView setBackgroundResource R drawable balloons     Both The View s background image and the ImageView s image are drawn separately  so you can set them both  imageView setBackgroundResource R drawable sky   imageView setImageResource R drawable balloons

User · Answer

If the above solutions are not working just delete this entire line from XML android src  quot  drawable image quot    amp  only try imageView setBackgroundResource R drawable image

User · Answer

In your XML for the image view  where you have android background   drawable thumbs down change this to android src   drawable thumbs down   Currently it is placing that image as the background to the view and not the actual image in it

User · Answer

In XML Design  android background   drawable imagename  android src   drawable imagename    Drawable Image via code  imageview setImageResource R drawable imagename     Server image       Dependency       implementation  com github bumptech glide glide 4 7 1    annotationProcessor  com github bumptech glide compiler 4 7 1     Glide with context  load url   placeholder R drawable image      into imageView        dependency      implementation  com squareup picasso picasso 2 71828    Picasso with context  load url   placeholder R drawable image    into imageView

User · Answer

Use in XML   android src   drawable image    Source use   imageView setImageDrawable ContextCompat getDrawable activity  R drawable your image

User · Answer

qImageView setImageResource R drawable img2     I think this will help you

User · Answer

That happens because you re setting the src of the ImageView instead of the background   Use this instead   qImageView setBackgroundResource R drawable thumbs down     Here s a thread that talks about the differences between the two methods

[android] Change Image of ImageView programmatically in Android

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