Inside MainActivity.java, write the code to retrieve and assign to a TextView object reference a TextView element defined in activity_main.xml and whose id is look.
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Q10: Inside activity_main.xml, write one line of code
Q11: Inside activity_main.xml, write one line of code
Q12: Inside activity_main.xml, write one line of code
Q13: Inside styles.xml, define a style named myStyle
Q14: Inside activity_main.xml, write one line of code
Q16: Inside MainActivity.java, write the code to retrieve
Q17: Inside activity_main.xml, we define a Button element;
Q18: Inside MainActivity, we coded a private class
Q19: Assign the width of the current screen
Q20: Write a code that creates a GridLayout
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