Set drawable size programmatically

Question

The images  icons  come in roughly the same size  but I need to resize them in order for the buttons to remain the same height   How do I do this   Button button   new Button this   button setText apiEventObject getTitle     button setOnClickListener listener          set clickable id of button to actual event id     int id   Integer parseInt apiEventObject getId     button setId id    button setLayoutParams new LayoutParams          android view ViewGroup LayoutParams FILL PARENT          android view ViewGroup LayoutParams WRAP CONTENT     Drawable drawable   LoadImageFromWebOperations apiSizeObject getSmall        resize drawable here  drawable setBounds 50  50  50  50   button setCompoundDrawablesWithIntrinsicBounds drawable  null  null  null

User · Answer

It s been a while since the question was asked but is still unclear for many how to do this simple thing   It s pretty simple in that case when you use a Drawable as a compound drawable on a TextView  Button      So 2 things you have to do   1 Set bounds     drawable setBounds left  top  right  bottom    2 Set the drawable appropriately  without using of intrinsic bounds     button setCompoundDrawablesRelative drawable  null  null  null     No need to use Bitmaps No workarounds such as ScaleDrawable ColorDrawable or LayerDrawable  what are definitely created for other purposes  No need in custom drawables  No workarounds with the post It s a native and simple solution  just how Android expects you to do

User · Answer

You can create a subclass of the view type  and override the onSizeChanged method   I wanted to have scaling compound drawables on my text views that didn t require me to mess around with defining bitmap drawables in xml  etc  and did it this way   public class StatIcon extends TextView        private Bitmap mIcon       public void setIcon int drawableId        mIcon   BitmapFactory decodeResource RIApplication appResources              drawableId               Override     protected void onSizeChanged int w  int h  int oldw  int oldh            if   w  gt  0   amp  amp   mIcon    null               this setCompoundDrawablesWithIntrinsicBounds                  null                  new BitmapDrawable Bitmap createScaledBitmap mIcon  w  w                          true    null  null            super onSizeChanged w  h  oldw  oldh               Note that I used w twice  not h  as in this case I was putting the icon above the text  and thus the icon shouldn t have the same height as the text view   This can be applied to background drawables  or anything else you want to resize relative to your view size  onSizeChanged   is called the first time the View is made  so you don t need any special cases for initialising the size

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Use the post method to achieve the desired effect    your view  post new Runnable                  Override         public void run                         Drawable image   context getResources   getDrawable  drawable image resource id                image setBounds 0  0   width amount in pixels    height amount in pixels                 your view  setCompoundDrawables image  null  null  null

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i didn t have time to dig why the setBounds   method is not working on bitmap drawable as expected but i have little tweaked  androbean-studio solution to do what setBounds should do            Created by ceph3us on 23 05 17     file belong to pl ceph3us base android drawables    this class wraps drawable and forwards draw canvas    on it wrapped instance by using its defined bounds     public class WrappedDrawable extends Drawable        private final Drawable  drawable      protected Drawable getDrawable             return  drawable             public WrappedDrawable Drawable drawable            super             drawable   drawable              Override     public void setBounds int left  int top  int right  int bottom              update bounds to get correctly         super setBounds left  top  right  bottom           Drawable drawable   getDrawable            if  drawable    null                drawable setBounds left  top  right  bottom                         Override     public void setAlpha int alpha            Drawable drawable   getDrawable            if  drawable    null                drawable setAlpha alpha                         Override     public void setColorFilter ColorFilter colorFilter            Drawable drawable   getDrawable            if  drawable    null                drawable setColorFilter colorFilter                         Override     public int getOpacity             Drawable drawable   getDrawable            return drawable    null                   drawable getOpacity                     PixelFormat UNKNOWN              Override     public void draw Canvas canvas            Drawable drawable   getDrawable            if  drawable    null                drawable draw canvas                         Override     public int getIntrinsicWidth             Drawable drawable   getDrawable            return drawable    null                   drawable getBounds   width                     0              Override     public int getIntrinsicHeight             Drawable drawable   getDrawable            return drawable    null                   drawable getBounds   height                     0            usage      get huge drawable  final Drawable drawable   resources getDrawable R drawable g logo      create our wrapper            WrappedDrawable wrappedDrawable   new WrappedDrawable drawable      set bounds on wrapper  wrappedDrawable setBounds 0 0 32 32       use wrapped drawable  Button setCompoundDrawablesWithIntrinsicBounds wrappedDrawable  null  null  null     results  before    after

User · Answer

You can try button requestLayout    When the background size is changed  it needs to remeasure and layout  but it won t do it

User · Answer

Button button   new Button this   Button    Button  findViewById R id button01     Use Button setHeight   or Button setWeight   and set a value

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You can use LayerDrawable from only one layer and setLayerInset method   Drawable   layers   new Drawable 1   layers 0    application getResources   getDrawable R drawable you drawable    LayerDrawable layerDrawable   new LayerDrawable layers   layerDrawable setLayerInset 0  10  10  10  10

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The setBounds   method doesn t work for every type of container  did work for some of my ImageView s  however    Try the method below to scale the drawable itself      Read your drawable from somewhere Drawable dr   getResources   getDrawable R drawable somedrawable   Bitmap bitmap     BitmapDrawable  dr  getBitmap       Scale it to 50 x 50 Drawable d   new BitmapDrawable getResources    Bitmap createScaledBitmap bitmap  50  50  true       Set your new  scaled drawable  d

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To use  textView setCompoundDrawablesWithIntrinsicBounds     Your minSdkVersion should be 17 in build gradle      defaultConfig       applicationId  com example         minSdkVersion 17     targetSdkVersion 25     versionCode 1     versionName  1 0      To change drawable size       TextView v    TextView findViewById email       Drawable dr   getResources   getDrawable R drawable signup mail       Bitmap bitmap     BitmapDrawable  dr  getBitmap        Drawable d   new BitmapDrawable getResources    Bitmap createScaledBitmap bitmap  80  80  true           setCompoundDrawablesWithIntrinsicBounds  image to left  top  right  bottom      v setCompoundDrawablesWithIntrinsicBounds d null null null

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Got this working using LayerDrawable  fun getResizedDrawable drawable  Drawable  scale  Float        LayerDrawable arrayOf drawable   also   it setLayerSize 0   drawable intrinsicWidth   scale  toInt     drawable intrinsicHeight   scale  toInt       fun getResizedDrawable drawable  Drawable  scalex  Float  scaleY  Float        LayerDrawable arrayOf drawable   also   it setLayerSize 0   drawable intrinsicWidth   scalex  toInt     drawable intrinsicHeight   scaleY  toInt       fun getResizedDrawableUsingSpecificSize drawable  Drawable  newWidth  Int  newHeight  Int        LayerDrawable arrayOf drawable   also   it setLayerSize 0  newWidth  newHeight     Example  val drawable   AppCompatResources getDrawable this  android R drawable sym def app icon    val resizedDrawable   getResizedDrawable drawable  3f  textView setCompoundDrawablesWithIntrinsicBounds resizedDrawable  null  null  null  imageView setImageDrawable resizedDrawable

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Specify the size with setBounds    ie for a 50x50 size use  drawable setBounds 0  0  50  50        public void setBounds  int left  int top  int right  int bottom

User · Answer

jkhouw1 answer is correct one  but it lacks some details  see below   It is much easier for at least API   21  Assume that we have VectorDrawable from resources  example code to retrieve it    val iconResource   context resources getIdentifier name   drawable   context packageName  val drawable   context resources getDrawable iconResource  null    For that VectorDrawable just set desired size   drawable setBounds 0  0  size  size    And show drawable in button   button setCompoundDrawables null  drawable  null  null    That s it  But note to use setCompoundDrawables  not Intrinsic version

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Probably a little late  But here is the solution that finally worked for me in every situation   The idea is to create a custom drawable with fixed intrinic size and pass the drawing job on to the original drawable   Drawable icon   new ColorDrawable            Drawable iconOrig   resolveInfo loadIcon packageManager             Override         public void setBounds int left  int top  int right  int bottom               super setBounds left  top  right  bottom    This is needed so that getBounds on this class would work correctly              iconOrig setBounds left  top  right  bottom                       Override         public void draw Canvas canvas               iconOrig draw canvas                       Override         public int getIntrinsicWidth                return  mPlatform dp2px 30                       Override         public int getIntrinsicHeight                return  mPlatform dp2px 30

User · Answer

Before apply  setBounds     try to convert current Drawable into ScaleDrawable  drawable   new ScaleDrawable drawable  0  width  height  getDrawable      after that   drawable setBounds 0  0  width  height     will work

[java] Set drawable size programmatically

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