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

Question

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 : ``` ``` 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.

Accepted Answer

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;
```

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

Solution

Problem