How to grey out a button

Question

I have a button defined as shown below  When I want to disable it I use my btn setEnabled false   but I would also like to grey it out  How can I do that   Thanks   lt Button android id    id buy btn  style   style srp button    gt    style srp button   lt style name  srp button  parent   android style Widget Button  gt       lt item name  android background  gt  drawable btn default lt  item gt       lt item name  android layout width  gt wrap content lt  item gt       lt item name  android layout height  gt wrap content lt  item gt       lt item name  android textColor  gt  ffffff lt  item gt       lt item name  android textSize  gt 14sp lt  item gt       lt item name  android typeface  gt serif lt  item gt       lt item name  android paddingLeft  gt 30dp lt  item gt       lt item name  android paddingRight  gt 30dp lt  item gt       lt item name  android paddingTop  gt 5dp lt  item gt       lt item name  android paddingBottom  gt 5dp lt  item gt   lt  style gt    drawable btn default xml   lt  xml version  1 0  encoding  utf-8   gt   lt shape xmlns android  http   schemas android com apk res android  gt       lt solid android color   color pink    gt       lt corners android radius  6dp    gt   lt  shape gt

User · Answer

Set Clickable as false and change the backgroung color as   callButton setClickable false   callButton setBackgroundColor Color parseColor   808080

User · Answer

You should create a XML file for the disabled button  drawable btn disable xml    lt shape xmlns android  http   schemas android com apk res android  gt       lt solid android color   color grey    gt       lt corners android radius  6dp    gt   lt  shape gt    And create a selector for the button   drawable btn selector xml    lt selector xmlns android  http   schemas android com apk res android  gt        lt item android drawable   drawable btn disable  android state enabled  false   gt       lt item android drawable   drawable btn default  android state enabled  true   gt       lt item android drawable   drawable btn default  android state pressed  false    gt    lt  selector gt    Add the selector to your button   lt style name  srp button  parent   android style Widget Button  gt       lt item name  android background  gt  drawable btn selector lt  item gt   lt  style gt

User · Answer

Button button    Button findViewById R id buy btn   button setEnabled false

User · Answer

All given answers work fine  but I remember learning that using setAlpha can be a bad idea performance wise  more info here   So creating a StateListDrawable is a better idea to manage disabled state of buttons  Here s how  Create a XML btn blue xml in res drawable folder   lt selector xmlns android  quot http   schemas android com apk res android quot  gt       lt  -- Disable background -- gt       lt item android state enabled  quot false quot            android color  quot  color md blue 200 quot   gt            lt  -- Enabled background -- gt       lt item android color  quot  color md blue 500 quot   gt   lt  selector gt   Create a button style in res values styles xml  lt style name  quot BlueButton quot  parent  quot ThemeOverlay AppCompat quot  gt         lt item name  quot colorButtonNormal quot  gt  drawable btn blue lt  item gt         lt item name  quot android textColor quot  gt  color md white 1000 lt  item gt   lt  style gt   Then apply this style to your button   lt Button      android id  quot   id my disabled button quot       android layout width  quot match parent quot       android layout height  quot wrap content quot       android theme  quot  style BlueButton quot   gt   Now when you call btnBlue setEnabled true  OR btnBlue setEnabled false  the state colors will automatically switch

User · Answer

I used this code for that   ColorMatrix matrix   new ColorMatrix    matrix setSaturation 0   ColorMatrixColorFilter filter   new ColorMatrixColorFilter matrix   profilePicture setColorFilter filter

User · Answer

I tried the above solutions but none of them seemed to work for me  I went with the following option    lt  -- button color selector xml -- gt   lt selector xmlns android  http   schemas android com apk res android  gt       lt item android color   color colorAccent  android state enabled  true   gt       lt item android color   color colorAccentLight  android state enabled  false   gt   lt  selector gt     lt com google android material button MaterialButton                 android layout width  wrap content                  android layout height  wrap content                  android backgroundTint   color button color selector                       gt

User · Answer

The most easy solution is to set color filter to the background image of a button as I saw here  You can do as follow   if   need to set button disable       button getBackground   setColorFilter Color GRAY  PorterDuff Mode MULTIPLY   else     button getBackground   setColorFilter null     Hope I helped someone

User · Answer

You could Also make it appear as disabled by setting the alpha  making it semi-transparent   This is especially useful if your button background is an image  and you don t want to create states for it   button setAlpha  5f   button setClickable false     update  I wrote the above solution pre Kotlin and when I was a rookie  It s more of a  quick n dirty  solution  but I don t recommend it in a professional environment    Today  if I wanted a generic solution that works on any button view without having to create a state list  I would create a Kotlin extension   fun View disable         getBackground   setColorFilter Color GRAY  PorterDuff Mode MULTIPLY      setClickable false      In Java you can do something is similar with a static util function and you would just have to pass in the view as variable  It s not as clean but it works

User · Answer

You have to provide 3 or 4 states in your btn defaut xml as a selector    Pressed state Default state Focus state Enabled state  Disable state with false indication  see comments     You will provide effect and background for the states accordingly   Here is a detailed discussion  Standard Android Button with a different color

[android] How to grey out a button?

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