Question

我正在开发一个需要2个标签的应用程序：“正常”和“硬” 我创建了两个标签。一切都很好

现在我想在普通标签中添加一个列表视图，但应用程序在启动后立即崩溃

这是我的项目

-Class

+ MainActivity.java

  public class MainActivity extends TabActivity {
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    TabHost tabHost = getTabHost();

    // Tab for Nomal
    TabSpec nomallv = tabHost.newTabSpec("Normal");
    // setting Title and Icon for the Tab
    nomallv.setIndicator("Normal");
    Intent nIntent = new Intent(this, NormalListActivity.class);
    nomallv.setContent(nIntent);

    // Tab for Hard
    TabSpec hardlv = tabHost.newTabSpec("Hard");
    // setting Title and Icon for the Tab
    hardlv.setIndicator("Hard");
    Intent hIntent = new Intent(this, HardListActivity.class);
    hardlv.setContent(hIntent);



    // Adding all TabSpec to TabHost
    tabHost.addTab(nomallv); // Adding tab
    tabHost.addTab(hardlv); // Adding tab
  }
}

+ NormalListActivity

public class NormalListActivity extends ListActivity {

String[] normallist = {"Home Town", "A trip to the country", "Story of Little Pea", "As long as you love me"
        , "The way to success", "Pursuit of Happiness"};

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.normallevellayout);
    // TODO Auto-generated method stub

    ArrayAdapter adapter = new ArrayAdapter<String>(this, R.layout.normallevellayout, normallist);

    ListView listView = (ListView)findViewById(R.id.listViewN);
    listView.setAdapter(adapter);
 }

}

+ HardListActiviity

 public class HardListActivity extends Activity {

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.hardlevellayout);
    // TODO Auto-generated method stub
  }

}

- 这里布局：

+ activity_main：

<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <TabWidget
        android:id="@android:id/tabs"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />
    <FrameLayout
        android:id="@android:id/tabcontent"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"/>
</LinearLayout>
</TabHost>

+ hardlevellayout

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f7d1d7"
android:orientation="vertical" >


 </LinearLayout>

+ normalevellayout

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#b7e2ec"
android:orientation="vertical" >

<ListView
    android:id="@+id/listViewN"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    >
</ListView>

</LinearLayout>

问题是标签中的列表视图请帮忙！提前谢谢！

Answer 1

将id更改为normallevellayout：

<ListView
android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>

并且还为列表项扩展正确的布局。类似的东西：

ArrayAdapter adapter = new ArrayAdapter<String>(this, R.layout.text, normallist);

ListView listView = (ListView)findViewById(android.R.id.list);

文字布局：

<?xml version="1.0" encoding="utf-8"?>
<TextView
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/txt"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content" />

替代解决方案：保留text.xml和将NormalListActivity更改为：

// setContentView(R.layout.normallevellayout);
// TODO Auto-generated method stub

ArrayAdapter adapter = new ArrayAdapter<String>(this, R.layout.text, normallist);

ListView listView = getListView();//(ListView)findViewById(android.R.id.list);
listView.setAdapter(adapter);

在Android中将ListView添加到Tab

1 个答案: