Control the color of the TextView through JAVA: (take the initialized Empty as an example)
First add the id in the TextView: android:id="@+id/text_view" and
then in the Java program: find the id: TextView text = findViewById(R.id.text_view);
set the color after getting the text variable: text.setTextColor (Color.BLUE);
Note: All letters of the color (BLUE) are capitalized
effect:
