无法在android的列表视图中获取单击的行号

概述我正在尝试构建一个简单的短信应用程序,编辑页面列出了所有已保存的微笑.我在编辑和删除的布局中给了2个按钮,但是当我点击它们时,我无法获取rowid(从顶部开始的行号)来检索对应于该特定行的短信..有人请帮助我..我的短信适配器不是没有扩展任何东西..这是我的类和xml文件.. public class SMSEdit extends ListActivity{ private SMSDbAda 我正在尝试构建一个简单的短信应用程序,编辑页面列出了所有已保存的微笑.我在编辑和删除的布局中给了2个按钮,但是当我点击它们时,我无法获取rowID(从顶部开始的行号)来检索对应于该特定行的短信..有人请帮助我..我的短信适配器不是没有扩展任何东西..这是我的类和xml文件..

public class SMSEdit extends ListActivity{ private SMSDbAdapter mDbHelper; //private button editsmsbtn,deletesmsbtn; public voID onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);    setContentVIEw(R.layout.editsmsList);    mDbHelper = new SMSDbAdapter(this);    mDbHelper.open();    fillData();} public voID fillData() {     Cursor smsCursor = mDbHelper.fetchAllNotes();     startManagingCursor(smsCursor);     // Create an array to specify the fIElds we want to display in the List (only Title)     String[] from = new String[]{SMSDbAdapter.KEY_Title,SMSDbAdapter.KEY_BODY,SMSDbAdapter.KEY_DATE,SMSDbAdapter.KEY_TIME};     // and an array of the fIElds we want to bind those fIElds to (in this case just text1)     int[] to = new int[]{R.ID.smseditListTO,R.ID.smseditListMessage,R.ID.smseditListDay,R.ID.smseditListTime};     // Now create a simple cursor adapter and set it to display     SimpleCursorAdapter smsadap =          new SimpleCursorAdapter(this,R.layout.smsrow,smsCursor,from,to);     setlistadapter(smsadap); }  public voID myEditClickHandler(VIEw v)  {  //get the row the clicked button is in  linearLayout vwParentRow = (linearLayout)v.getParent();  button btnChild = (button)vwParentRow.getChildAt(4);  btnChild.setText("I've been clicked!");  listadapter pos = getlistadapter();  Intent intent = new Intent();      intent.setClass(SMSEdit.this,SMS.class);     // intent.putExtra(SMSDbAdapter.KEY_ROWID,ID);      startActivity(intent);      finish(); }  public voID myDeleteClickHandler(VIEw v)  {  //get the row the clicked button is in  linearLayout vwParentRow = (linearLayout)v.getParent();  //TextVIEw child = (TextVIEw)vwParentRow.getChildAt(0);  button btnChild = (button)vwParentRow.getChildAt(5);  //btnChild.setText(child.getText());  btnChild.setText("I've been clicked!"); int c = color.CYAN;   vwParentRow.setBackgroundcolor(c); vwParentRow.refreshDrawableState();         } }

editsmsList.xml – >>

<?xml version="1.0" enCoding="utf-8"?><linearLayout  xmlns:androID="http://schemas.androID.com/apk/res/androID"  androID:layout_wIDth="wrap_content"  androID:layout_height="wrap_content"><ListVIEw androID:ID="@+ID/androID:List"          androID:layout_wIDth="wrap_content"         androID:layout_height="wrap_content"/>   <TextVIEw androID:ID="@+ID/androID:empty"          androID:layout_wIDth="wrap_content"     androID:layout_height="wrap_content"     androID:text="No Future SMS Yet" androID:textSize="35px"/></linearLayout>

smsrow.xml – >>

<?xml version="1.0" enCoding="utf-8"?>    <ScrollVIEw  androID:ID="@+ID/ScrollVIEw01" androID:layout_wIDth="fill_parent" androID:layout_height="fill_parent" xmlns:androID="http://schemas.androID.com/apk/res/androID"><linearLayout  androID:ID="@+ID/linearLayout02"       androID:layout_wIDth="wrap_content"       androID:layout_height="wrap_content"        androID:orIEntation="vertical">      <linearLayout androID:ID="@+ID/linearLayout03"                      androID:layout_wIDth="wrap_content" androID:layout_height="wrap_content">            <TextVIEw androID:layout_height="wrap_content"                     androID:layout_wIDth="fill_parent" androID:text="@string/smsdetailseditList"       androID:ID="@+ID/smseditListTO" androID:paddingleft="5px">              </TextVIEw>               <TextVIEw androID:layout_height="wrap_content"     androID:text="@string/smsdetailseditList" androID:ID="@+ID/smseditListMessage"        androID:paddingleft="20px" androID:maxlines="1" androID:layout_wIDth="wrap_content">            </TextVIEw></linearLayout>       <linearLayout androID:ID="@+ID/linearLayout01"          androID:layout_wIDth="wrap_content"         androID:layout_height="wrap_content"        androID:orIEntation="horizontal" androID:paddingleft="5px">         <TextVIEw androID:layout_wIDth="wrap_content"       androID:layout_height="wrap_content" androID:text="Date: "></TextVIEw><TextVIEw                 androID:text="@string/smsdetailseditList" androID:ID="@+ID/smseditListDay"          androID:layout_wIDth="wrap_content" androID:layout_height="wrap_content"></TextVIEw>            <TextVIEw androID:layout_wIDth="wrap_content"               androID:layout_height="wrap_content" androID:text="Time: " androID:paddingleft="5px">               </TextVIEw><TextVIEw androID:text="@string/smsdetailseditList"                 androID:ID="@+ID/smseditListTime" androID:layout_wIDth="wrap_content"                androID:layout_height="wrap_content" androID:paddingRight="10px"></TextVIEw>            <button  androID:layout_wIDth="wrap_content"          androID:layout_height="wrap_content" androID:ID="@+ID/EditSMSbutton"          androID:text="@string/editsms" androID:onClick="@string/myEditClickHandler"></button>            <button androID:layout_wIDth="wrap_content"        androID:layout_height="wrap_content" androID:ID="@+ID/DeleteSMSbutton"            androID:text="@string/deletesms" androID:onClick="@string/myDeleteClickHandler"></button>         </linearLayout>       </linearLayout>      </ScrollVIEw>

另外请建议是否有更好的方法来实现这个或使布局看起来更好……

解决方法 你可以像这样扩展一个cursorAdapter ……

public class exampleAdapter extends CursorAdapter {     LayoutInflater inflater;     public exampleAdapter (Context context,Cursor c) {        super(context,c);        inflater = LayoutInflater.from(context);    }    @OverrIDe    public voID bindVIEw(VIEw vIEw,Context context,Cursor cursor) {        // Todo auto-generated method stub        button btn_del = (button)vIEw.findVIEwByID(R.ID.button1);btn_del.setonClickListener(new VIEw.OnClickListener() {            @OverrIDe            public voID onClick(VIEw v) {                // Todo auto-generated method stub                SMSDbAdapter vb = new SMSDbAdapter(context);                vb.open();                String xyz = cursor.getString(0); //Persumably your ID                vb.Delete(Integer.parseInt(cursor.getString(0)));                Toast.makeText(context,xyz + " Deleted!",Toast.LENGTH_SHORT).show();                vb.close();             }        });    }    @OverrIDe    public VIEw newVIEw(Context context,Cursor cursor,VIEwGroup parent) {        return inflater.inflate(R.layout.smsrow,parent,false);    }         }

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