android TextView setting the background color dynamically doesn t work

Question

Setting the background color programatically of an android TextView doesn t seem to work  I m I missing something   TextView et   new TextView activity   et setText  350    et setBackgroundColor R color white     I also have this file  colors xml  in my res values folder   lt resources gt           lt color name  white  gt  ffffffff lt  color gt           lt color name  black  gt  ff000000 lt  color gt   lt  resources gt     EDIT    Also  setting the text color causes the TextView to disappear   TextView c1   new TextView activity   c1 setTextColor R color solid red   c1 setText  My Text

User · Answer

you can use android textColor    whatever text color u want to give  in xml file where your text view is declared

User · Answer

Just this 1 line of code changed the background programmatically  tv setBackgroundColor Color parseColor   808080

User · Answer

Well I had situation when web service returned a color in hex format like   CC2233  and I wanted to put this color on textView by using setBackGroundColor    so I used android Color class to get int  value of hex string and passed it to mentioned function  Everything worked  This is example   String myHexColor     CC2233   TextView myView    TextView  findViewById R id myTextView   myView setBackGroundColor Color pasrsehexString myHexColor      P S  posted this answer because other solutions didn t work for me  I hope this will help someone

User · Answer

Here are the steps to do it correctly    First of all  declare an instance of TextView in your MainActivity java as follows   TextView mTextView   Set some text DYNAMICALLY if you want  as follows   mTextView setText  some text     Now  to set the background color  you need to define your own color in the res- values- colors xml file as follows    lt resources gt       lt color name  my color  gt  000000 lt  color gt   lt  resources gt   You can now use  my color  color in your java file to set the background dynamically as follows   mTextView setBackgroundResource R color my color

User · Answer

two ways to do that   1 create color in colors xml file like    lt resources gt           lt color name  white  gt  ffffff lt  color gt   lt  resources gt    and use it int activity java class as   et setBackgroundResource R color white     2   et setBackgroundColor getResources   getColor R color white                    or et setBackgroundColor Color parseColor   ffffff

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I had a similar issue where I was creating a numeric color without considering the leading alpha channel   ie   mytext setTextColor 0xFF0000   thinking this would be red     While this is a red color it is also 100  transparent as it   0x00FF0000   The correct 100  opaque value is 0xFFFF0000 or mytext setTextcolor 0xFFFF0000

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tv setTextColor getResources   getColor R color solid red

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Try this   TextView c1   new TextView activity   c1 setTextColor getResources   getColor R color solid red    c1 setText  My Text      I agree that a color and a resource have the same type  but I also spend a few hours to find this solution

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Jut use   ArrayAdapter lt String gt  adaptername   new ArrayAdapter lt String gt  this              android R layout simple dropdown item 1line  your array list

User · Answer

Use et setBackgroundResource R color white

User · Answer

If you would like to support all versions  Try this   myTextView setBackgroundColor ContextCompat getColor this R color mycolor

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Color parseHexColor  17ee27   did not work for me  instead Color parseColor  17ee27   worked perfectly

User · Answer

here is in little detail   if you are in activity use this  textview setBackground ContextCompat getColor this R color yourcolor      if you are in fragment use below code  textview setBackground ContextCompat getColor getActivity   R color yourcolor      if you are in recyclerview adapter use below code  textview setBackground ContextCompat getColor context R color yourcolor        use holder textview if you are in onBindviewholder   here context is passed from fragment

User · Answer

To set red color   textView setBackgroundColor 0xfff00000     Or   lt color name  solid red  gt  fff00000 lt  color gt   textView setBackgroundResource R color solid red

[android] android TextView: setting the background color dynamically doesn't work

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