When i run this program, it repeatedly saying that \"cannot resolve symbol setOnClickListener\".anyone please help me to solve this problem.
import android.suppo
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
Your onClickListener needs to be in your onCreate method.
public class MainActivity extends AppCompatActivity {
@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);
}
});
}
}
That should fix the error. Also make sure you have added Numbers.class in your AndroidManifest, otherwise you'll get another error when you start the intent.
<activity
android:name=".Numbers"
android:label="Numbers"/>
@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);
}
}
or:
public class MainActivity extends AppCompatActivity implements OnClickListener{
@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(this);
}
@Override
public void onClick(View view) {
Intent numbersIntent = new Intent(MainActivity.this, Numbers.class);
startActivity(numbersIntent);
}
}