我在屏幕上有2个片段都扩展ListView ..我通过fragment1中的代码填充列表但数据绑定到fragment2 ..两个片段都在xml文件中声明。提前致谢
以下是片段1 的代码：
public class Fragment1 extends ListFragment implements OnFragmentUiUpdate {
OnFragmentSelectedListener mCallback;
private final int fragId = 1;
// The container Activity must implement this interface so the frag can
// deliver messages
ListView list;
/*@Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
se generateFragmentView(0,
getActivity()); // We need to use a different list item layout for
devices older than Honeycomb int layout =
android.R.layout.simple_list_item_1;Build.VERSION.SDK_INT >=
Build.VERSION_CODES.HONEYCOMB ?
android.R.layout.simple_list_item_activated_1 :
android.R.layout.simple_list_item_1;
// Create an array adapter for the list view, using the Ipsum headlines
array
int layout =
android.R.layout.simple_list_item_1;Build.VERSION.SDK_INT >=
Build.VERSION_CODES.HONEYCOMB ?
android.R.layout.simple_list_item_activated_1 :
android.R.layout.simple_list_item_1;
setListAdapter(new ArrayAdapter<String>(getActivity(), layout,
Ipsum.Headlines)); }*/
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// If activity recreated (such as from screen rotate), restore
// the previous article selection set by onSaveInstanceState().
// This is primarily necessary when in the two-pane layout.
// Inflate the layout for this fragment
View vi = inflater.inflate(R.layout.menu_1_list, container, false);
return vi;
}
@Override
public void onStart() {
super.onStart();
/*
* // When in two-pane layout, set the listview to highlight the
* selected list item // (We do this during onStart because at the point
* the listview is available.) if
* (getFragmentManager().findFragmentById(R.id.article_fragment) !=
* null) { getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE); }
*/
generateFragmentView(0, getActivity());
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
// This makes sure that the container activity has implemented
// the callback interface. If not, it throws an exception.
try {
mCallback = (OnFragmentSelectedListener) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString()
+ " must implement OnHeadlineSelectedListener");
}
}
@Override
public void onListItemClick(ListView listView, View view, int position,
long id) {
// Notify the parent activity of selected item
mCallback.onFragmentSelected(listView, view, position, id, fragId);
// Set the item as checked to be highlighted when in two-pane layout
getListView().setItemChecked(position, true);
}
@Override
public void generateFragmentView(int position, Activity mainScreen) {
// TODO Auto-generated method stub
DbAdapter dbAdapter = null;
dbAdapter = new DbAdapter(mainScreen.getApplicationContext());
List<BindObject> menu1 = null;
dbAdapter.open();
try {
menu1 = (List<BindObject>) dbAdapter.selectAll(Menu1.class);
System.out.println("menu");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
dbAdapter.close();
list = (ListView) mainScreen.findViewById(android.R.id.list);
LazyAdapter adapter = new LazyAdapter(mainScreen, this,
(List<BindObject>) menu1);
list.setAdapter(adapter);
}
@Override
public View updateFragmentView(int position, Activity activity,
LayoutInflater inflater, List<BindObject> Data, View convertView,
ViewGroup parent) {
View vi = convertView;
ViewHolder holder = null;
if (convertView == null) {
vi = inflater.inflate(R.layout.menu1_item, null);
holder = new ViewHolder();
holder.item = (TextView) vi.findViewById(R.id.item);
vi.setTag(holder);
} else
holder = (ViewHolder) vi.getTag();
Menu1 menu = (Menu1) Data.get(position);
holder.item.setText(menu.getItem());
return vi;
}
public static class ViewHolder {
public TextView item;
}
}
以下是片段2 的代码：
public class Fragment1_1 extends ListFragment implements OnFragmentUiUpdate{
OnFragmentSelectedListener mCallback;
ListView list;
private final int fragId=2;
// The container Activity must implement this interface so the frag can deliver messages
/*@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// We need to use a different list item layout for devices older than Honeycomb
int layout = android.R.layout.simple_list_item_1;Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB ?
android.R.layout.simple_list_item_activated_1 : android.R.layout.simple_list_item_1;
// Create an array adapter for the list view, using the Ipsum headlines array
setListAdapter(new ArrayAdapter<String>(getActivity(), layout, Ipsum.Headlines));
}*/
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// If activity recreated (such as from screen rotate), restore
// the previous article selection set by onSaveInstanceState().
// This is primarily necessary when in the two-pane layout.
// Inflate the layout for this fragment
return inflater.inflate(R.layout.menulist, container, false);
}
@Override
public void onStart() {
super.onStart();
// When in two-pane layout, set the listview to highlight the selected list item
// (We do this during onStart because at the point the listview is available.)
if (getFragmentManager().findFragmentById(R.id.article_fragment) != null) {
getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
}
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
// This makes sure that the container activity has implemented
// the callback interface. If not, it throws an exception.
try {
mCallback = (OnFragmentSelectedListener) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString()
+ " must implement OnHeadlineSelectedListener");
}
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
// Notify the parent activity of selected item
mCallback.onFragmentSelected(l, v, position, id,fragId);
// Set the item as checked to be highlighted when in two-pane layout
getListView().setItemChecked(position, true);
}
public void updateArticleView(int position) {
TextView article = (TextView) getActivity().findViewById(R.id.article);
article.setText(Ipsum.Articles[position]);
//mCurrentPosition = position;
}
@Override
public void generateFragmentView(int position, Activity mainScreen) {
// TODO Auto-generated method stub
//updateArticleView( position);
list = (ListView) mainScreen.findViewById(android.R.id.list);
LazyAdapter adapter = new LazyAdapter(mainScreen,this, (List<BindObject>) Util.generateData());
list.setAdapter(adapter);
}
@Override
public View updateFragmentView(int position, Activity activity,LayoutInflater inflater,List<BindObject> Data, View convertView, ViewGroup parent) {
View vi = convertView;
ViewHolder holder = null;
if (convertView == null) {
vi = inflater.inflate(R.layout.menu1_1_item, null);
holder = new ViewHolder();
holder.item = (TextView) vi.findViewById(R.id.item);
holder.image = (ImageView) vi.findViewById(R.id.image);
vi.setTag(holder);
} else
holder = (ViewHolder) vi.getTag();
Menu1_1 menu = (Menu1_1) Data.get(position);
holder.item.setText(menu.getItem());
String imagString=activity.getPackageName()+":drawable/"+"ic_launcher";
int res = activity.getResources().getIdentifier(imagString, null, null);
holder.image.setImageResource(res);
return vi;
}
public static class ViewHolder {
public TextView item;
public ImageView image;
}
}
main.xml的代码：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#000000"
android:orientation="horizontal" >
<TableLayout
android:id="@+id/tableLayout1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerInParent="true" >
<TableRow
android:id="@+id/tableRow1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
</TableRow>
<TableRow
android:id="@+id/tableRow1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<fragment
android:id="@+id/Fragment1_1"
android:name="com.example.android.fragments.Fragment1_1"
android:layout_width="60dp"
android:layout_height="100dp"
android:layout_weight="0.25" />
<fragment
android:id="@+id/Fragment1_1_1"
android:name="com.example.android.fragments.Fragment1_1_1"
android:layout_width="90dp"
android:layout_height="100dp"
android:layout_weight="0.75" />
</TableRow>
<TableRow
android:id="@+id/tableRow1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
</TableRow>
</TableLayout>
<SlidingDrawer
android:id="@+id/SlidingDrawer"
android:layout_width="wrap_content"
android:layout_height="150dip"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:content="@+id/contentLayout"
android:handle="@+id/slideButton"
android:orientation="vertical"
android:padding="10dip" >
<Button
android:id="@+id/slideButton"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="@drawable/ic_launcher" >
</Button>
<TableLayout
android:id="@+id/contentLayout"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TableRow
android:id="@+id/tableRow4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:gravity="center_vertical" >
<ImageButton
android:id="@+id/feature"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_weight="0.2"
android:background="@drawable/ic_launcher"
android:onClick="displayFeature" />
<ImageButton
android:id="@+id/feature"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_weight="0.2"
android:background="@drawable/ic_launcher"
android:onClick="displayFeature" />
<ImageButton
android:id="@+id/feature"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_weight="0.2"
android:background="@drawable/ic_launcher"
android:onClick="displayFeature" />
<ImageButton
android:id="@+id/feature"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_weight="0.2"
android:background="@drawable/ic_launcher"
android:onClick="displayFeature" />
<ImageButton
android:id="@+id/feature"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_weight="0.2"
android:background="@drawable/ic_launcher"
android:onClick="displayFeature" />
<ImageButton
android:id="@+id/feature"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_weight="0.2"
android:background="@drawable/ic_launcher"
android:onClick="displayFeature" />
<TableLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TableRow
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<ImageButton
android:id="@+id/googlebtn"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_weight="0.2"
android:background="@drawable/ic_launcher"
android:onClick="displayFeature" />
<ImageButton
android:id="@+id/tweeterBtn"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_weight="0.2"
android:background="@drawable/ic_launcher"
android:onClick="displayFeature" />
</TableRow>
<TableRow
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<ImageButton
android:id="@+id/fb"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_weight="0.2"
android:background="@drawable/ic_launcher"
android:onClick="displayFeature" />
<ImageButton
android:id="@+id/fb2"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_weight="0.2"
android:background="@drawable/ic_launcher"
android:onClick="displayFeature" />
</TableRow>
</TableLayout>
</TableRow>
</TableLayout>
</SlidingDrawer>
<fragment
android:id="@+id/Fragment1"
android:name="com.example.android.fragments.Fragment1"
android:layout_width="100dp"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="@+id/tableLayout1"
android:layout_marginTop="106dp"
android:tag="feature" />
<ImageButton
android:id="@+id/menu1Btn"
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_alignParentRight="true"
android:layout_below="@+id/Fragment1"
android:background="@drawable/ic_launcher"
android:onClick="displayFeature" />
</RelativeLayout>
Fragment1数据与fragent2绑定...同时调试..fragment1代码正常运行但generatefragnentView（）函数数据转到fragment2，fragment1显示空白