相关疑难解决方法(0)

我创建了一个像这样的xml文件:

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

和一项活动:

public class ExampleActivity extends ListActivity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {   
        super.onCreate(savedInstanceState);
        setContentView(R.layout.mainlist);
    }
}

如你所见,我还没有做任何其他事情.但是我收到了错误:

您的内容必须具有ListView,其id属性为'android.R.id.list'

即使我android:id="@+id/list"在我的xml中有这条线.

问题是什么？

我遇到了这个运行时错误,我真的很难找到它的底部:"你的内容必须有一个ListView,其id属性是android.R.id.list".

这是我的代码:

public class ShowAllJobsInArea extends ListActivity{

    Context context;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.show_jobs_in_area);
        context=getApplicationContext();

        String area=Cookie.getAreaSelected();

        final ProgressBar thinger=(ProgressBar) findViewById(R.id.progressBar2);
        TabHost tabHost=(TabHost)findViewById(android.R.id.tabhost);
        tabHost.setup();

        TabSpec spec1=tabHost.newTabSpec("Tab 1");
        spec1.setContent(R.id.tab1);
        spec1.setIndicator("Starting");

        TabSpec spec2=tabHost.newTabSpec("Tab 2");
        spec2.setContent(R.id.tab2);
        spec2.setIndicator("# Days");        

        TabSpec spec3=tabHost.newTabSpec("Tab 3");
        spec3.setContent(R.id.tab3);
        spec3.setIndicator("Rate");


        tabHost.addTab(spec1);
        tabHost.addTab(spec2);
        tabHost.addTab(spec3);

        Handler handler = new Handler() {
             public void handleMessage(Message message) {
                  switch (message.what) {
                      case HttpConnection.DID_START:
                          thinger.setVisibility(View.VISIBLE);
                          break;
                      case HttpConnection.DID_SUCCEED:
                          String response = (String) message.obj;
                          Log.i("EOH",response);

                          ArrayList<String> startDates=new ArrayList<String>();
                          ArrayList<String> ns=new ArrayList<String>();
                          ArrayList<String> rates=new ArrayList<String>(); …