How to Set android:textColor using drawable in Android?

Assuming that by "drawable" you mean a selector with color items like this:

res/color/your_colors.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="true" android:color="#ffffffff"/>
    <item android:color="#ff1c5fab"/>
</selector>

You can use this code: mText.setTextColor(getResources().getColorStateList(R.color.your_colors));

Assuming that by "drawable" you mean a selector with color items, you should refer to this question.

You won't be able to use the textcolor with image drawables, or selectors containing image drawables.

color/selector_colors.xml

<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:color="@color/white" android:state_checked="true" />
    <item android:color="@color/white" android:state_pressed="true" />
    <item android:color="@color/white" android:state_activated="true" />

    <item android:color="@color/black" />

</selector>

you have to implement it into textview like that:

textview.setTextColor(context.getResources().getColorStateList(R.color.selector_colors));