mainlistview1无法解析或不是字段

时间:2014-08-30 19:21:49

标签: java android eclipse

我正在关注制作列表视图的教程,但我找不到错误的原因

  

mainlistview1无法解析或不是字段。

这是我目前的代码:

import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.os.Build;
import android.widget.AdapterView.*;

public class MainActivity extends Activity {

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

    String[] riverCities = new String[] {"Greenville", "Vicksburg",
            "Memphis", "Natchez", "Cape Girardeau", "Helena"};   
ListView listView = (ListView)findViewById(R.id.mainListView1);
ListAdapter adapter = new ArrayAdapter<String>(this, android.R.id.mainListView1, riverCities);
listView.setAdapter(adapter);

}

布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal" >

    <ListView
        android:id="@+id/mainListView1"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
    </ListView>
</LinearLayout>

1 个答案:

答案 0 :(得分:0)

<强>问题:

 android.R.id.mainListView1

mainListView1不在android默认布局ID中,因此编译器无法找到它。

<强>溶液

将其更改为默认列表视图项ID

ListAdapter adapter = new ArrayAdapter<String>(this ,android.R.layout.simple_list_item_1, riverCities);