Android列表视图不起作用

Question

由于我是Android开发的新手，我想将数组中的样本数据绑定到列表视图，但我在

中遇到错误

setListAdapter(new ArrayAdapter<String>this,android.R.layout.simple_list_item_1, city));

还有一些导入语句无法在android studio中导入

mycode ：

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.app.ListActivity;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    String[] city = {
            "Bangalore",
            "Chennai",
            "Mumbai"
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        //Listview adapter
        setListAdapter(new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, city));  
    }
}

Answer 1

public class MainActivity extends AppCompatActivity {
   ListView listView ;
   String[] city = { "Bangalore","Chennai","Mumbai" };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);          
    listView = (ListView) findViewById(R.id.yourlistviewid);
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, android.R.id.text1, city ); 
    listView.setAdapter(adapter); 
   }

}