java - ListView 不显示 -- ListView 项目选择到 webView

Question

我正在尝试制作一个列出所有英雄联盟冠军的 ListView。

我目前的问题是，现在只有 ListView 本身不会显示在屏幕上，并且无法弄清楚原因。

这是我的 MainActivity.java

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);     
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
}

这是我的 champListAcivity:

public class champListActivity extends ListActivity {

    @Override
    public void onCreate(Bundle fdsa) {
        super.onCreate(fdsa);

        ArrayAdapter<Champ> aa;
        ArrayList<Champ> champList = new ArrayList<Champ>();
        ListView listView = (ListView) findViewById(R.id.ChampListView);

            // I SKIPPED THE CODE CONTAINING THE ADDING OF THE CHAMPIONS
            // TO THE LIST BECAUSE ITS TOO LONG AND ALREADY RIGHT BECAUSE IT 
            // WORKED BEFORE AND I HAVENT CHANGED IT

        int layoutID = android.R.layout.simple_list_item_1;
        aa = new ArrayAdapter<Champ>(this, layoutID, champList);
        listView.setAdapter(aa);                        
    }

    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {

        super.onListItemClick(l,v,position,id);

        Champ selChamp = (Champ) getListAdapter().getItem(position);
        String champURL = selChamp.getLink();

        Intent intent = new Intent(this,webViewActivity.class);
        intent.putExtra("url", champURL);
        startActivity(intent);
    }

Answer 1

您没有在 champListActivity 中设置您的内容 View :

public class champListActivity extends ListActivity {

    @Override
    public void onCreate(Bundle fdsa) {
        super.onCreate(fdsa);

        setContentView(R.layout.activity_your_champ_list_name);  // <- missing!