Signal-Android/src/org/thoughtcrime/securesms/util/ThemeUtil.java

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package org.thoughtcrime.securesms.util;
import android.content.Context;
import android.support.annotation.NonNull;
import android.util.TypedValue;
import org.thoughtcrime.securesms.R;
public class ThemeUtil {
public static boolean isDarkTheme(@NonNull Context context) {
return getAttribute(context, R.attr.theme_type, "light").equals("dark");
}
private static String getAttribute(Context context, int attribute, String defaultValue) {
TypedValue outValue = new TypedValue();
if (context.getTheme().resolveAttribute(attribute, outValue, true)) {
return outValue.coerceToString().toString();
} else {
return defaultValue;
}
}
}