Android – ListFragment中的getListView()错误
作者:互联网
我在我的应用程序中使用ListFragment并且我想使它为列表中的每个项目都有一个OnItemClick侦听器但是当我添加ListView时lv = getListView();我收到一个错误.如果我删除了listview的工作但是那时我的应用程序将不需要onclick监听器.
以下是我的代码
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();
//...
ListAdapter adapter = new SimpleAdapter(getActivity(), menuItems,
R.layout.list_item,
new String[] { KEY_NAME, KEY_DESC, KEY_COST }, new int[] {
R.id.name, R.id.desciption, R.id.cost });
setListAdapter(adapter);
ListView lv = getListView();
//HERE IS WHERE I AM GETTING THE ERROR
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting values from selected ListItem
String name = ((TextView) view.findViewById(R.id.name)).getText().toString();
String cost = ((TextView) view.findViewById(R.id.cost)).getText().toString();
String description = ((TextView) view.findViewById(R.id.desciption)).getText().toString();
// Starting new intent
Intent in = new Intent(getActivity().getApplicationContext(), SingleMenuItemActivity.class);
in.putExtra(KEY_NAME, name);
in.putExtra(KEY_COST, cost);
in.putExtra(KEY_DESC, description);
startActivity(in);
}
});
return super.onCreateView(inflater, container, savedInstanceState);
}
Logcat在下面
08-01 23:24:47.152: E/AndroidRuntime(18883): FATAL EXCEPTION: main
08-01 23:24:47.152: E/AndroidRuntime(18883): java.lang.IllegalStateException: Content view not yet created
08-01 23:24:47.152: E/AndroidRuntime(18883): at android.support.v4.app.ListFragment.ensureList(ListFragment.java:328)
08-01 23:24:47.152: E/AndroidRuntime(18883): at android.support.v4.app.ListFragment.getListView(ListFragment.java:222)
08-01 23:24:47.152: E/AndroidRuntime(18883): at com.OptimusApps.stayhealthy.AndroidXMLParsingActivity.onCreateView(AndroidXMLParsingActivity.java:74)
08-01 23:24:47.152: E/AndroidRuntime(18883): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1470)
08-01 23:24:47.152: E/AndroidRuntime(18883): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:925)
08-01 23:24:47.152: E/AndroidRuntime(18883): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1102)
08-01 23:24:47.152: E/AndroidRuntime(18883): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
08-01 23:24:47.152: E/AndroidRuntime(18883): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1458)
08-01 23:24:47.152: E/AndroidRuntime(18883): at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:438)
08-01 23:24:47.152: E/AndroidRuntime(18883): at android.os.Handler.handleCallback(Handler.java:605)
08-01 23:24:47.152: E/AndroidRuntime(18883): at android.os.Handler.dispatchMessage(Handler.java:92)
08-01 23:24:47.152: E/AndroidRuntime(18883): at android.os.Looper.loop(Looper.java:137)
08-01 23:24:47.152: E/AndroidRuntime(18883): at android.app.ActivityThread.main(ActivityThread.java:4575)
08-01 23:24:47.152: E/AndroidRuntime(18883): at java.lang.reflect.Method.invokeNative(Native Method)
08-01 23:24:47.152: E/AndroidRuntime(18883): at java.lang.reflect.Method.invoke(Method.java:511)
08-01 23:24:47.152: E/AndroidRuntime(18883): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
08-01 23:24:47.152: E/AndroidRuntime(18883): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556)
08-01 23:24:47.152: E/AndroidRuntime(18883): at dalvik.system.NativeStart.main(Native Method)
谢谢
解决方法:
在使用之前,您需要打开视图.
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
v = inflater.inflate(R.layout.list, container, false);
// Set adapter etc
return v;
}
布局list.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="2dp"
android:paddingRight="2dp" >
<ListView
android:id="@id/android:list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:drawSelectorOnTop="false" />
<ProgressBar
android:id="@id/android:empty"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
/>
</RelativeLayout>
使用onListItemClick:
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
//Responding to clicks
}
标签:android,listview,fragment,android-listfragment 来源: https://codeday.me/bug/20190718/1492621.html