ArrayAdapter与SimpleAdapter的使用

package xidian.dy.com.chujia;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ArrayAdapter;
import android.widget.ListView;



public class MainActivity extends AppCompatActivity {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ListView lv = (ListView) findViewById(R.id.lv);
        String[] str = new String[]{"fdfas", "fdsf", "fafda"};
        if(lv != null)
            lv.setAdapter(new ArrayAdapter<String>(this, R.layout.item_list, R.id.dog, str));
    }
}