CODEWITHSUNDEEP
androidbackgrounddrawable
nilkash
nilkash

Reputation: 7536

Change drawable start color and end color dynamically in android activity class

Hi I am developing one android application in which I drawable resource to set backgroung for button. I want to change start and end color for that drawable programatically i.e. in activity class inside button click listener. My drawable looks like :

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
  android:shape="rectangle">
  <gradient android:startColor="#be584c" 
    android:endColor="#be584c"
    android:angle="270" />
  <corners android:radius="2dp" />
  <stroke android:width="1px"/>
</shape>

And I set it as background for button in xml file. android:background="@drawable/download_button"

and i want to change start color and end color of this drawable in activity class how to do this. Is there any way to f=do this. Need help. Thank you.

Upvotes: 2

Views: 14148

Answers (3)

superarts.org
superarts.org

Reputation: 7238

Chintan's solution is good enough if you don't mind to create the GradientDrawable again, but if you just want to change the colors without touching other attributes like padding etc, you can simply use setColors. In the following case it shows how to change startColor, centerColor, and endColor. 

int color = screenshot.getPixel(x, y);
GradientDrawable drawable = (GradientDrawable)binding.layoutStation.getBackground();
int colors[] = { color, 0xffffffff, color };
drawable.setColors(colors);

Upvotes: 2

Robert Goodrick
Robert Goodrick

Reputation: 298

new GradientDrawable(GradientDrawable.Orientation.TL_BR, new int[]{0xFF141a24, 0xFF293f49, 0xFF72554c})

Upvotes: -1

Chintan Rathod
Chintan Rathod

Reputation: 26034

Yes, it is possible. You should use GradientDrawable to do this.

int colors[] = { 0xff255779, 0xffa6c0cd };

GradientDrawable gradientDrawable = new GradientDrawable(
        GradientDrawable.Orientation.TOP_BOTTOM, colors);

view.setBackgroundDrawable(gradientDrawable);

Change color code as per your requirement. Though I used Color.parseColor("color code"), its not working.

There are some option for Orientation like following.

GradientDrawable.Orientation.BOTTOM_TOP;
GradientDrawable.Orientation.LEFT_RIGHT;
GradientDrawable.Orientation.RIGHT_LEFT;

Upvotes: 10

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