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POListFragment content does not appear
 

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  1. POListFragment content does not appear
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    <p>Im trying to use a list fragment embedded in a parent fragment via layout XML (I've also done through fragment manager with no change). When I embed the listfragment by itself I am able to see the content from the cursor. When I override onCreateView of the parent fragment (ShoppingListActivity) and return a custom view I am no longer able to see my list fragment content.</p> <p>On the list fragment I'm using a CursorLoader and onLoadFinished always called with a cursor that has content so it's not a matter of data not being present when I use the custom layout on the parent fragement combined. The listfragment doesn't have a custom layout (I originally started with the buttons from the parent fragment being added by overriding onCreateView of the list fragment but that produced the same result)</p> <p>I also originally started out using the support library for the fragments but now use the native fragments. </p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" &gt; &lt;Button android:id="@+id/btn_shopping_list_add_item_manually" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_toLeftOf="@+id/btn_shopping_list_add_item_barcode" android:onClick="addItemManually" android:text="TYPE" /&gt; &lt;Button android:id="@+id/btn_shopping_list_add_item_barcode" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_alignParentRight="true" android:onClick="addItemFromBarcode" android:text="SCAN" /&gt; &lt;fragment android:name="com.ainesophaur.shopping.assistant.fragments.ShoppingListFragment" android:id="@+id/list" android:layout_height="0dp" android:layout_below="@+id/btn_shopping_list_add_item_manually" android:layout_alignParentLeft="true" android:layout_width="fill_parent" /&gt; </code></pre> <p></p> <p>---Edit----</p> <p>Since I cannot upload images yet Ill draw what happens</p> <p>When onCreateView is over ridden and a custom view is provided (The above XML layout) I get</p> <h2>Button1 Button2</h2> <p>Nothing</p> <p>When I call the listview fragment directly I get</p> <p>List Item1<br /> List Item2</p> <p>The list view fragment has a custom adapter extended from CursorAdapter and when I have the above specified XML layout returned from onCreateView then my newView and bindView of the adapter aren't called.</p> <p>I've also tried to include a listview item in the parent fragment XML (instead of including the fragment itself) and gave it the standard android ID of list and I still get the same result..if I give the list view a unique ID and call setAdapter on the list then I also get no result (ie, bindView and newView of the adapter never get called) after onLoadFinished of the cursorloader ---EDIT</p> <p>Now I can upload images :)</p> <p><img src="https://i.stack.imgur.com/EBe8k.png" alt="Missing List"></p> <p><img src="https://i.stack.imgur.com/QxUoU.png" alt="List Shown"></p> <hr> <p>This is the code that contains the ListFragment and the CursorAdapter </p> <p>ListFragment</p> <pre><code>public class ShoppingListFragment extends ListFragment implements LoaderManager.LoaderCallbacks&lt;Cursor&gt; { private int mStoreID; private long mListID; private String mStoreName; private ShoppingListItemsAdapter adapter; private Context mContext; private Cursor mCursor; private static final int SHOPPING_LIST_LOADER = 0x04; CursorLoader cursorLoader; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mContext = getActivity(); Bundle args = getArguments(); mListID = 4; //args.getLong("listid"); //mStoreName = args.getString("storename"); } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); mContext = getActivity(); adapter = new ShoppingListItemsAdapter(mContext, mCursor, CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER); setListAdapter(adapter); //setListAdapter(adapter); getLoaderManager().initLoader(SHOPPING_LIST_LOADER, null, this); } @Override public Loader&lt;Cursor&gt; onCreateLoader(int id, Bundle args) { cursorLoader = new CursorLoader(getActivity(), Uri.withAppendedPath(ShoppingListProvider.CONTENT_LIST_ITEMS_URI, String.valueOf(mListID)), ShoppingDBAdapter.joinitemProj, null, null, null); return cursorLoader; } @Override public void onLoadFinished(Loader&lt;Cursor&gt; loader, Cursor cursor) { adapter.swapCursor(cursor); //setListShown(true); } @Override public void onLoaderReset(Loader&lt;Cursor&gt; loader) { adapter.swapCursor(null); } private OnClickListener addManual = new OnClickListener() { @Override public void onClick(View v) { Fragment fragment = new AddItemFragment(); Bundle args = new Bundle(); args.putLong("listid", mListID); fragment.setArguments(args); getFragmentManager().beginTransaction() .replace(R.id.container, fragment).addToBackStack(null) .commit(); return; } }; private static class ShoppingListItemViewHolder { public TextView separator; public TextView itemQuantity; public TextView itemName; public TextView itemPrice; public CharArrayBuffer quantityObtainedBuffer = new CharArrayBuffer(128); public CharArrayBuffer quantityNeededBuffer = new CharArrayBuffer(128); public CharArrayBuffer titleBuffer = new CharArrayBuffer(128); public CharArrayBuffer priceBuffer = new CharArrayBuffer(128); public CharArrayBuffer itemCategoryBuffer = new CharArrayBuffer(128); } public void addItemFromBarcode(View v) { return; } </code></pre> <p>extended CursorAdapter</p> <pre><code>private static class ShoppingListItemsAdapter extends CursorAdapter { private static final int STATE_UNKNOWN = 0; private static final int STATE_SECTIONED_CELL = 1; private static final int STATE_REGULAR_CELL = 2; String LAST_CATEGORYNAME = ""; private final CharArrayBuffer mBuffer = new CharArrayBuffer(128); private int[] mCellStates; public ShoppingListItemsAdapter(Context context, Cursor c, int flags) { super(context, c, flags); mCellStates = (c == null) ? null : new int[c.getCount()]; } @Override public void changeCursor(Cursor cursor) { super.changeCursor(cursor); mCellStates = (cursor == null) ? null : new int[cursor.getCount()]; } @Override public Cursor swapCursor(Cursor cursor) { Cursor oldCursor = super.swapCursor(cursor); mCellStates = (cursor == null) ? null : new int[cursor.getCount()]; return oldCursor; } @Override public void bindView(View view, Context context, Cursor cursor) { final ShoppingListItemViewHolder holder = (ShoppingListItemViewHolder) view.getTag(); final int COLUMN_NAME_INDEX = cursor.getColumnIndex(ShoppingDBAdapter.KEY_NAME); final int COLUMN_ITEMCATEGORY_INDEX = cursor.getColumnIndex(ShoppingDBAdapter.KEY_CATEGORYID); final int COLUMN_PRICE_INDEX = cursor.getColumnIndex(ShoppingDBAdapter.KEY_PRICE); final int COLUMN_OBTAINED_INDEX = cursor.getColumnIndex(ShoppingDBAdapter.KEY_OBTAINED); final int COLUMN_NEEDED_INDEX = cursor.getColumnIndex(ShoppingDBAdapter.KEY_NEEDED); boolean needSeparator = false; final int position = cursor.getPosition(); cursor.copyStringToBuffer(COLUMN_NAME_INDEX, holder.titleBuffer); cursor.copyStringToBuffer(COLUMN_PRICE_INDEX, holder.priceBuffer); cursor.copyStringToBuffer(COLUMN_NEEDED_INDEX, holder.quantityNeededBuffer); cursor.copyStringToBuffer(COLUMN_ITEMCATEGORY_INDEX, holder.itemCategoryBuffer); switch (mCellStates[position]) { case STATE_SECTIONED_CELL: needSeparator = true; break; case STATE_REGULAR_CELL: needSeparator = false; break; case STATE_UNKNOWN: default: if (position == 0) { if(holder.itemCategoryBuffer.sizeCopied &gt; 0) { needSeparator = true; int holderStoreNameSize = holder.itemCategoryBuffer.sizeCopied; String holderStoreName = ""; for(int i = 0; i &lt; holderStoreNameSize; i++) { holderStoreName += holder.itemCategoryBuffer.data[i]; } LAST_CATEGORYNAME = holderStoreName; } } else { cursor.moveToPosition(position - 1); cursor.copyStringToBuffer(COLUMN_ITEMCATEGORY_INDEX, mBuffer); if (mBuffer.sizeCopied &gt; 0 &amp;&amp; holder.itemCategoryBuffer.sizeCopied &gt; 0) { int mBufferSize = mBuffer.sizeCopied; int holderStoreNameSize = holder.itemCategoryBuffer.sizeCopied; String mBufferName = ""; String holderStoreName = ""; for(int i = 0; i &lt; holderStoreNameSize; i++) { holderStoreName += holder.itemCategoryBuffer.data[i]; } if(!LAST_CATEGORYNAME.equals(holderStoreName)) { needSeparator = true; LAST_CATEGORYNAME = holderStoreName; } } cursor.moveToPosition(position); } mCellStates[position] = needSeparator ? STATE_SECTIONED_CELL : STATE_REGULAR_CELL; break; } if (needSeparator) { holder.separator.setText(holder.itemCategoryBuffer.data, 0 , holder.itemCategoryBuffer.sizeCopied); holder.separator.setVisibility(View.VISIBLE); } else { holder.separator.setVisibility(View.GONE); } holder.itemName.setText(holder.titleBuffer.data, 0, holder.titleBuffer.sizeCopied); holder.itemPrice.setText(holder.priceBuffer.data, 0, holder.priceBuffer.sizeCopied); holder.itemQuantity.setText(holder.quantityNeededBuffer.data, 0, holder.quantityNeededBuffer.sizeCopied); } @Override public View newView(Context context, Cursor cursor, ViewGroup parent) { View v = LayoutInflater.from(context).inflate(R.layout.fragment_shopping_list_items_row, parent, false); ShoppingListItemViewHolder holder = new ShoppingListItemViewHolder(); holder.separator = (TextView)v.findViewById(R.id.separator); holder.itemName = (TextView)v.findViewById(R.id.item_name); holder.itemPrice = (TextView)v.findViewById(R.id.item_price); holder.itemQuantity = (TextView)v.findViewById(R.id.item_quantity); v.setTag(holder); return v; } } </code></pre>
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    1. USainesophaur
    1. USainesophaur
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    1. CODid you override: onCreateView() in your listFragment? If so can you post that too?
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      1. POListFragment content does not appear
      1. USGreg Giacovelli
    2. COCurrently its not overridden. I've tried the solution where you mimic the default listview layout but that still provided no content. http://stackoverflow.com/questions/11729157/android-about-listfragment-and-styling-its-listview?rq=1
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      1. POListFragment content does not appear
      1. USainesophaur
    3. COcan you post the code that adds the content then? Are you setting the adapter and calling notifyDataSetObservers correctly?
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      1. POListFragment content does not appear
      1. USGreg Giacovelli
 

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