cannot resolve symbol setOnClickListener in android

Question

When i run this program, it repeatedly saying that \"cannot resolve symbol setOnClickListener\".anyone please help me to solve this problem.

import android.suppo         


        

Answer 1

Your code should be inside the onCreate method, try :

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Set the content of the activity to use the activity_main.xml layout file
        setContentView(R.layout.activity_main);

    // Find the View that shows the numbers category
    TextView numbers = (TextView) findViewById(R.id.numbers);

        // Set a click listener on that View
        numbers.setOnClickListener(new View.OnClickListener() {
        // The code in this method will be executed when the numbers View is clicked on.

        @Override
        public void onClick(View view) {
            Intent numbersIntent = new Intent(MainActivity.this, Numbers.class);
            startActivity(numbersIntent);
        }
    }
}

Read more about Activities and their lifecycle : Activity Lifecycle