Suppose I have defined two themes in my App: AppTheme.Blue and AppTheme.Green, and correspondingly, I would like have set of color, thus I could apply it according two different theme.
For example, when I call ContextCompat.getColor(context, R.color.color_primary); under AppTheme.Green it will return a green color as ?attr/colorPrimary but Blue if under AppTheme.Blue, thus the the widget will always be the same color as title bar.
How can I define those two set of colors thus is system will choose it dynamically according to the current theme adopted?
As far as I got, you are talking about using multiple theme. Here is a scenario for your question.
Define two themes in styles.xml
Theme Blue:
<style name="AppTheme.Blue" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="colorPrimary">@color/primaryColor_blue</item>
<item name="colorPrimaryDark">@color/primaryColorDark_blue</item>
<item name="colorAccent">@color/primaryAccent_blue</item>
<item name="backgroundColor">@color/primaryColorDark_blue</item>
</style>
Theme Green:
<style name="AppTheme.Green" parent="Theme.AppCompat.Light.DarkActionBar">
<item name="colorPrimary">@color/primaryColor_green</item>
<item name="colorPrimaryDark">@color/primaryColorDark_green</item>
<item name="colorAccent">@color/primaryAccent_green</item>
<item name="backgroundColor">@color/primaryColorDark_green</item>
</style>
Define all the colors in color.xml accordingly
Add the following code to Get the Primary Color of the selected theme and set it to your widget.
TypedValue typedValue = new TypedValue();
Resources.Theme theme = this.getTheme();
theme.resolveAttribute(android.R.attr.textColorPrimary, typedValue, true);
TypedArray arr =
this.obtainStyledAttributes(typedValue.data, new int[]{
android.R.attr.colorPrimary});
int primaryColor = arr.getColor(0, -1);
yourTextView.setTextColor(primaryColor); //ex
arr.recycle();
If your selected theme is Blue then the textcolor will be blue as well. Hope this suffices.