我的列表视图显示这样的错误我在我的问题中提到的事件，尽管我在mainactivity中提到扩展listactivity也和我的布局我把尽可能的ListViewLogcat错误 - 内容必须有一个ListView的id属性是'android.R.id.list'

activity_list_item.xml

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".MainActivity" >

android:id="@android:id/list"

android:layout_width="wrap_content"

android:layout_height="fill_parent" >

Mainactivity.java

public class MainActivity extends ListActivity implements FetchDataListener{

private ProgressDialog dialog;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_list_item);

initView();

}

private void initView() {

// show progress dialog

dialog = ProgressDialog.show(this, "", "Loading...");

String url = "http://10.0.2.2/test/apps.php";

FetchDataTask task = new FetchDataTask(this);

task.execute(url);

}

@Override

public void onFetchComplete(List data) {

// dismiss the progress dialog

if(dialog != null) dialog.dismiss();

// create new adapter

ApplicationAdapter adapter = new ApplicationAdapter(this, data);

// set the adapter to list

setListAdapter(adapter);

}

@Override

public void onFetchFailure(String msg) {

// dismiss the progress dialog

if(dialog != null) dialog.dismiss();

// show failure message

Toast.makeText(this, msg, Toast.LENGTH_LONG).show();

}

}

我的日志猫错误显示这样

5-17 11:30:30.649: E/AndroidRuntime(1177): FATAL EXCEPTION: main

05-17 11:30:30.649: E/AndroidRuntime(1177): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.jsonandroid/com.example.jsonandroid.MainActivity}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'

05-17 11:30:30.649: E/AndroidRuntime(1177): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)

05-17 11:30:30.649: E/AndroidRuntime(1177): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)

05-17 11:30:30.649: E/AndroidRuntime(1177): at android.app.ActivityThread.access$600(ActivityThread.java:141)

05-17 11:30:30.649: E/AndroidRuntime(1177): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)

05-17 11:30:30.649: E/AndroidRuntime(1177): at android.os.Handler.dispatchMessage(Handler.java:99)

05-17 11:30:30.649: E/AndroidRuntime(1177): at android.os.Looper.loop(Looper.java:137)

05-17 11:30:30.649: E/AndroidRuntime(1177): at android.app.ActivityThread.main(ActivityThread.java:5039)

05-17 11:30:30.649: E/AndroidRuntime(1177): at java.lang.reflect.Method.invokeNative(Native Method)

05-17 11:30:30.649: E/AndroidRuntime(1177): at java.lang.reflect.Method.invoke(Method.java:511)

05-17 11:30:30.649: E/AndroidRuntime(1177): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)

05-17 11:30:30.649: E/AndroidRuntime(1177): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)

05-17 11:30:30.649: E/AndroidRuntime(1177): at dalvik.system.NativeStart.main(Native Method)

05-17 11:30:30.649: E/AndroidRuntime(1177): Caused by: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'

05-17 11:30:30.649: E/AndroidRuntime(1177): at android.app.ListActivity.onContentChanged(ListActivity.java:243)

05-17 11:30:30.649: E/AndroidRuntime(1177): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:273)

05-17 11:30:30.649: E/AndroidRuntime(1177): at android.app.Activity.setContentView(Activity.java:1881)

05-17 11:30:30.649: E/AndroidRuntime(1177): at com.example.jsonandroid.MainActivity.onCreate(MainActivity.java:17)

05-17 11:30:30.649: E/AndroidRuntime(1177): at android.app.Activity.performCreate(Activity.java:5104)

05-17 11:30:30.649: E/AndroidRuntime(1177): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)

05-17 11:30:30.649: E/AndroidRuntime(1177): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)

05-17 11:30:30.649: E/AndroidRuntime(1177): ... 11 more

+0

清理完项目后再试。 –

+0

关闭袖口，你看起来没问题。请记住，如果您的活动布局只是一个全屏“ListView”，您可以跳过活动布局和'setContentView()'调用。 'ListActivity'默认会自动给你一个全屏的'ListView'。 –

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尝试android：layout_height =“match_parent” –