錯誤：方法未覆蓋或從超類型OnCreateOptionsMenu實現方法

Question

@Override
public boolean OnCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.menu, menu);
    return true;
}

@Override
public boolean OnOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()){

        case R.id.logout:
            FirebaseAuth.getInstance().signOut();
            startActivity(new Intent(MainActivity.this, StartActivity.class));
            finish();
            return true;
    }

我在AndroidStudio上構建時出現錯誤消息：錯誤：方法未覆蓋或從超類型實現方法我需要幫助

Answer 1

這些方法的小寫字母“ o”

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
getMenuInflater().inflate(R.menu.menu, menu); return true; } 


@Override 
public boolean onOptionsItemSelected(MenuItem item) {
 switch (item.getItemId()){ 
case R.id.logout:
 FirebaseAuth.getInstance().signOut();
 startActivity(new Intent(MainActivity.this, StartActivity.class)); finish(); return true; }