Android button states programmatically in Java (not XML)

Question

How does one define Android button image for the "state_pressed" "android:state_focused" in Java?

For example, how would one accomplish the equivalent in Java for the XML from

http://developer.android.com/reference/android/widget/ImageButton.html

 <?xml version="1.0" encoding="utf-8"?>
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:state_pressed="true"
           android:drawable="@drawable/button_pressed" /> <!-- pressed -->
     <item android:state_focused="true"
           android:drawable="@drawable/button_focused" /> <!-- focused -->
     <item android:drawable="@drawable/button_normal" /> <!-- default -->
 </selector>

check this link http://stackoverflow.com/a/8132500/964741 – RajaReddy PolamReddy Dec 07 '11 at 06:58 — RajaReddy PolamReddy, Dec 07 '11 at 06:58

score 14 · Answer 1 · answered Dec 07 '11 at 08:31

14

Just use addState method of StateListDrawable

StateListDrawable stateListDrawable = new StateListDrawable();
stateListDrawable.addState(new int[] {android.R.attr.state_pressed}, 
      getResources().getDrawable(R.drawable.phone));

You can use constants below for the first parameter of this method

android.R.attr.state_accelerated
android.R.attr.state_activated
android.R.attr.state_active
android.R.attr.state_drag_can_accept
android.R.attr.state_drag_hovered
android.R.attr.state_enabled
android.R.attr.state_first
android.R.attr.state_focused
android.R.attr.state_hovered
android.R.attr.state_last
android.R.attr.state_middle
android.R.attr.state_pressed
android.R.attr.state_selected
android.R.attr.state_single
android.R.attr.state_window_focused

answered Dec 07 '11 at 08:31

Tang Ke

1,508
12
12

3

I found the following sample exceedingly useful because it also shows how to use 'false' states (with a leading minus symbol) http://heliodorj.blogspot.com/2009/04/androids-statelistdrawable-example.html – Someone Somewhere Jan 08 '14 at 00:19
what is the default state? – Vasil Valchev Feb 12 '16 at 15:04
default state is as follows: stateListDrawable.addState(new int[] {}, new ColorDrawable(getResources().getColor(R.color.red))); – Daniel Benedykt Mar 09 '16 at 19:04
@SomeoneSomewhere thanks you so much, I've been searching for setting a state_activated="false" programmatically for hours ! – Blablablabli Mar 06 '17 at 11:23

score 4 · Answer 2 · answered Dec 07 '11 at 07:03

4

Create an instance of StateListDrawable and then assign it with imagebutton.setImageDrawable(stateDrawable).

answered Dec 07 '11 at 07:03

Peter Knego

79,991
11
123
154

score 1 · Answer 3 · answered Feb 12 '16 at 15:37

10x to Tang Ke, I`m using this for different list item color whit selection color.

selected state

stateListDrawable.addState(new int[] {android.R.attr.state_pressed}, 
  new ColorDrawable(getResources().getColor(R.color.alpha_blue500)));

default state

stateListDrawable.addState(new int[] {}, 
  new ColorDrawable(getResources().getColor(R.color.red)));

Here you can change color for different state of the row item (ex. paid vs free)

set state to custom layout row item in list adapter

holder.relativeLayout.setBackgroundDrawable(stateListDrawable);

Android button states programmatically in Java (not XML)

3 Answers3

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