我有一个ListView活动,并且我想在其上方显示一个EditText(最后是一个按钮).

我相信我的xml很好,但是由于某种原因,EditText没有显示. ListView占据整个屏幕：(

我的XML如下所示：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <EditText
        android:id="@+id/newitemtext"
    android:layout_height="wrap_content"
    android:layout_width="fill_parent"
    android:hint="@string/add_new_item"
    android:maxLines="1"
    />
    <ListView
        android:id="@+id/android:list"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
    />
    <TextView
        android:id="@+id/android:empty"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/inBox_no_items"
    />
</LinearLayout>

有任何想法吗？

注意：在Eclipse中xml文件的布局选项卡中,将显示EditText.当我在模拟器中运行应用程序时,它不会.

感谢您的时间

更新：

这是我在onCreate方法中设置内容视图的地方

m_aryNewListItems = new ArrayList<MyListItem>();
m_Adapter = new Mylistadapter(this,R.layout.layout_list,m_aryNewListItems);
setlistadapter(m_Adapter);

这是我扩展的ArrayAdapter：

private class Mylistadapter extends ArrayAdapter<MyListItem> {

// items in the list
private ArrayList<MyListItem> m_items;

// constructor
public Mylistadapter(Context context,int textViewResourceId,ArrayList<MyListItem> items) {
        super(context,textViewResourceId,items);
        this.m_items = items;
}

// get specific list item
public MyListItem getItem(int position) {
    if (m_items.size() > position) {
        return m_items.get(position);
    }
    else {
        return null;
    }
}

/*
 * Update screen display
 */
@Override
public View getView(int position,View convertView,ViewGroup parent) {

    // get the View for this list item
    View v = convertView;
    if (v == null) {
        LayoutInflater vi = (LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        v = vi.inflate(R.layout.layout_list_item,null);
    }

    // get the next MyListItem object
    MyListItem lstItem = m_items.get(position);

    // set up the list item
    if (lstItem != null) {
        TextView txtItem = (TextView) v.findViewById(R.id.list_itemname);
        TextView txtQty = (TextView) v.findViewById(R.id.list_itemqty);
        TextView txtPlace = (TextView) v.findViewById(R.id.list_place);

        // set item text
        if (txtItem != null) {
            txtItem.setText(lstItem.getItemName());
        }

        // set qty text
        String strQtyText = "Qty: ";
        if (txtQty != null && lstItem.getItemQty() != -1) {
            BigDecimal bd = new BigDecimal(lstItem.getItemQty());
            strQtyText += bd.stripTrailingZeros().toString();
            if(lstItem.getItemQtyUnitId() != -1) {
                strQtyText += " " + lstItem.getItemQtyUnitTextAbbrev();
            }
        }
        else {
            strQtyText += "--";
        }
        txtQty.setText(strQtyText);

        // set place text
        if (txtPlace != null && lstItem.getPlaceName() != null) {
            txtPlace.setText(lstItem.getPlaceName());
        }
    }

    // return the created view
    return v;
}

}

所以,这个东西：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:gravity="bottom"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content">

        <EditText android:id="@+id/filter"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:singleLine="true"
            android:inputType="textAutoComplete"
            android:layout_weight="1"
            />

        <Button android:id="@+id/sort"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/sort"
            />

        <Button android:id="@+id/add_all"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/add_all"
            />

        <Button android:id="@+id/add"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/add"
            />
    </LinearLayout>

    <GridView android:id="@+id/myGrid"
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent"
        android:layout_weight="1"

        android:verticalSpacing="15dp"
        android:horizontalSpacing="10dp"

        android:numColumns="auto_fit"
        android:columnWidth="60dp"

        android:gravity="center"
        />

</LinearLayout>

产生这个：

item.setActionView(R.layout.collapsible_edittext);
etInput = (EditText) item.getActionView().findViewById(R.id.etInput);   
etInput.requestFocus();

<?xml version="1.0" encoding="utf-8"?>
<EditText xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/etInput"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:hint="@string/search_hint"
    android:lines="1" 
    android:maxLines="1"
    android:inputType="textFilter|textNoSuggestions"
    android:imeOptions="actionSend"/>

InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(etInput,InputMethodManager.SHOW_IMPLICIT);

解决方法

item.setonActionExpandListener(new OnActionExpandListener() {

    @Override
    public boolean onMenuItemActionExpand(MenuItem item) {
    // post delayed to allow time for edittext to become visible
    mHandler.postDelayed(new Runnable() {
        @Override
        public void run() {
        mSearchText.clearFocus();
        showKeyboard();         
        mSearchText.requestFocus();
        }
    },400);

    return true;
    }

    @Override
    public boolean onMenuItemActionCollapse(MenuItem item) {
    hideKeyboard();
    return true;
    }
});

private void showKeyboard() {
 if (android.os.Build.VERSION.SDK_INT < 11) {
    mInputManager.toggleSoftInput(InputMethodManager.SHOW_FORCED,InputMethodManager.HIDE_IMPLICIT_ONLY);
 } else {
    mInputManager.showSoftInput(mSearchText,InputMethodManager.SHOW_IMPLICIT);
 }
}

private void hideKeyboard() {
 if (android.os.Build.VERSION.SDK_INT < 11) {
   mInputManager.hideSoftInputFromWindow(getActivity().getwindow().getCurrentFocus().getwindowToken(),0);      
 } else {
    mInputManager.hideSoftInputFromWindow(getActivity().getCurrentFocus().getwindowToken(),InputMethodManager.HIDE_NOT_ALWAYS);
 }  
}

@model Medical.Models.VisitLabResult

@for (int item = 0; item < 10; item++)
{
    <tr id = @item>
    @using (Ajax.BeginForm("Createall","VisitLabResult",new AjaxOptions
    {
        HttpMethod = "Post",UpdateTargetId = item.ToString() + "td",InsertionMode = InsertionMode.Replace,LoadingElementId = "progress2",OnSuccess = string.Format(
            "disableform({0})",Json.Encode(item)),}))
    {  
        @Html.ValidationSummary(true)

        @Html.AntiForgeryToken()
        <td>
            @Html.DropDownList("LabTestID",String.Empty)
            @Html.ValidationMessageFor(model => model.LabTestID)
        </td>
        <td>
            @Html.EditorFor(model => model.Result)
            @Html.ValidationMessageFor(model => model.Result)
        </td>

        <td>
            @Html.EditorFor(model => model.DateTaken)
            @Html.ValidationMessageFor(model => model.DateTaken)
        </td>

        <td>
            @Html.EditorFor(model => model.Comment)
            @Html.ValidationMessageFor(model => model.Comment)
        </td>

        <td>
            <input type="submit" value="Create" />
        </td>

        <td id = @(item.ToString() + "td")>
        </td>
    }
    </tr>
    }
</table>

[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Createall(VisitLabResult vlr,int visitid = 28)
{
    try
    {
        if (ModelState.IsValid)
        {
            var v = repository.GetVisit(visitid);
            if (!(v.EligabletoStart(User.Identity.Name))){ 
                return View("NotFound"); 
            }
            vlr.VisitID = visitid;
            repository.AddVisitLabResult(vlr);
            repository.Save();

            return Content("Addedd Succsfully");
        }
    }
    catch (dbupdateException)
    {
        JsonRequestBehavior.AllowGet);
        ModelState.AddModelError(string.Empty,"The Same test Type might have been already created,go back to the Visit page to see the avilalbe Lab Tests");
    }
}

解决方法

if (visitExists)
    {
         ModelState.AddModelError("CustomError",go back to the Visit page to see the avilalbe Lab Tests");
         return View(vlr);    
    }
    //Other code here

ModelState.AddModelError("CustomError",go back to the Visit page to see the avilalbe Lab Tests");

@Html.ValidationMessage("CustomError")