Please find my working code snippet below:
// get a reference to the ListView
listView = (ListView) findViewById(android.R.id.list);
...
// single click event
listView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
My list view works with the customized adapter.
On Jul 11, 9:18 pm, 苗忠良 <[email protected]> wrote:
> hi,all:
>
> I write a listactivty,the item including a textview and a button，the data
> came from a sqlite。but in handling the clickevent , i meet some problem, in
> the CursorAdapter's bindView() function，i cann't get the current position。in
> log，i find position of Cursor is the position I last click the item of
> listview.
> the code as follows:
> package miaozl.hello;
>
> import android.app.ListActivity;
> import android.content.Context;
> import android.database.Cursor;
> import android.os.Bundle;
> import android.util.Log;
> import android.view.LayoutInflater;
> import android.view.View;
> import android.view.ViewGroup;
> import android.view.View.OnClickListener;
> import android.widget.AdapterView;
> import android.widget.Button;
> import android.widget.CursorAdapter;
> import android.widget.ImageButton;
> import android.widget.ListView;
> import android.widget.SimpleCursorAdapter;
> import android.widget.TextView;
>
> public class helloActivity extends ListActivity{
> private helloAdapter mDbHelper;
> private final static String TAG ="helloActivity";
> private static LayoutInflater mFactory;
> ListView lv;
> /** Called when the activity is first created. */
> @Override
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> mDbHelper = new helloAdapter(this);
> mDbHelper.open();
> mFactory = LayoutInflater.from(this);
> lv= getListView();
> lv.setChoiceMode(1);
> lv.setOnItemClickListener(new AdapterView.OnItemClickListener(){
>
> @Override
> public void onItemClick(AdapterView<?> arg0, View arg1, int
> arg2,
> long arg3) {
> // TODO Auto-generated method stub
> Log.d(TAG,"====onItemClick===arg3 is ==="+arg3);
> }
>
> });
> fillData();
> }
> private void fillData() {
> // TODO Auto-generated method stub
> Cursor c = mDbHelper.fetchAllNotes();
> startManagingCursor(c);
>
> String[] from = new String[] {
> helloAdapter.KEY_WORD,helloAdapter.KEY_ID};
> int[] to = new int[] { R.id.word,R.id.button};
> lv.setAdapter(new ListAdapter(this, c));
> }
> private static class ListAdapter extends CursorAdapter {
>
> public ListAdapter(Context context, Cursor c) {
> super(context, c);
> // TODO Auto-generated constructor stub
> }
>
> @Override
> public void bindView(View view, Context context, final Cursor
> cursor) {
> // TODO Auto-generated method stub
> Button onButton=(Button)view.findViewById(R.id.button);
> onButton.setOnClickListener(new OnClickListener(){
>
> @Override
> public void onClick(View arg0) {
> // TODO Auto-generated method stub
> Log.d(TAG,
> "=cursor.getPosition()="+cursor.getPosition());
> }
> });
>
> }
>
> @Override
> public View newView(Context context, Cursor cursor, ViewGroup
> parent) {
> // TODO Auto-generated method stub
> View ret= mFactory.inflate(R.layout.list_item,parent,false);
> TextView word=(TextView)ret.findViewById(R.id.word);
> Button onButton=(Button)ret.findViewById(R.id.button);
> onButton.setFocusable(false);
>
> word.setText(cursor.getString(cursor.getColumnIndex(helloAdapter.KEY_WORD)));
> onButton.setBackgroundResource(R.drawable.icon);
> return ret;
> }
>
> }
>
> }
>
> the ListAdapter as fallows:
>
> package miaozl.hello;
>
> import android.content.ContentValues;
> import android.content.Context;
> import android.database.Cursor;
> import android.database.SQLException;
> import android.database.sqlite.SQLiteDatabase;
> import android.database.sqlite.SQLiteOpenHelper;
> import android.util.Log;
>
> public class helloAdapter{
> public static final String KEY_WORD = "word";
> public static final String KEY_ID = "_id";
> private static final String TAG = "helloAdapter";
> private DatabaseHelper mDbHelper;
> private SQLiteDatabase mDb;
>
> private static final String DATABASE_CREATE =
> "create table notes (_id integer primary key autoincrement, "
> + "word text not null);";
> private static final String DATABASE_NAME = "list";
> private static final String DATABASE_TABLE = "notes";
> private static final int DATABASE_VERSION = 1;
> private final Context mCtx;
> private static class DatabaseHelper extends SQLiteOpenHelper {
>
> DatabaseHelper(Context context) {
> super(context, DATABASE_NAME, null, DATABASE_VERSION);
> }
>
> @Override
> public void onCreate(SQLiteDatabase db) {
>
> db.execSQL(DATABASE_CREATE);
> }
>
> @Override
> public void onUpgrade(SQLiteDatabase db, int oldVersion, int
> newVersion) {
> Log.w(TAG, "Upgrading database from version " + oldVersion + "
> to "
> + newVersion + ", which will destroy all old data");
> db.execSQL("DROP TABLE IF EXISTS notes");
> onCreate(db);
> }
> }
>
> /**
> * Constructor - takes the context to allow the database to be
> * opened/created
> *
> * @param ctx the Context within which to work
> */
> public helloAdapter(Context ctx) {
> this.mCtx = ctx;
> }
>
> /**
> * Open the notes database. If it cannot be opened, try to create a new
> * instance of the database. If it cannot be created, throw an exception
> to
> * signal the failure
> *
> * @return this (self reference, allowing this to be chained in an
> * initialization call)
> * @throws SQLException if the database could be neither opened or
> created
> */
> public helloAdapter open() throws SQLException {
> mDbHelper = new DatabaseHelper(mCtx);
> mDb = mDbHelper.getWritableDatabase();
> return this;
> }
>
> public void close() {
> mDbHelper.close();
> }
>
> /**
> * Create a new note using the title and body provided. If the note is
> * successfully created return the new rowId for that note, otherwise
> return
> * a -1 to indicate failure.
> *
> * @param title the title of the note
> * @param body the body of the note
> * @return rowId or -1 if failed
> */
> public long createNote(String word) {
> ContentValues initialValues = new ContentValues();
> initialValues.put(KEY_WORD, word);
>
> return mDb.insert(DATABASE_TABLE, null, initialValues);
> }
>
> /**
> * Delete the note with the given rowId
> *
> * @param rowId id of note to delete
> * @return true if deleted, false otherwise
> */
> public boolean deleteNote(long rowId) {
>
> return mDb.delete(DATABASE_TABLE, KEY_ID + "=" + rowId, null) > 0;
> }
>
> /**
> * Return a Cursor over the list of all notes in the database
> *
> * @return Cursor over all notes
> */
> public Cursor fetchAllNotes() {
>
> return mDb.query(DATABASE_TABLE, new String[] {KEY_ID, KEY_WORD
> }, null, null, null, null, null);
> }
>
> /**
> * Return a Cursor positioned at the note that matches the given rowId
> *
> * @param rowId id of note to retrieve
> * @return Cursor positioned to matching note, if found
> * @throws SQLException if note could not be found/retrieved
> */
> public Cursor fetchNote(long rowId) throws SQLException {
>
> Cursor mCursor =
>
> mDb.query(true, DATABASE_TABLE, new String[] {KEY_ID,
> KEY_WORD}, KEY_ID + "=" + rowId, null,
> null, null, null, null);
> if (mCursor != null) {
> mCursor.moveToFirst();
> }
> return mCursor;
>
> }
>
> /**
> * Update the note using the details provided. The note to be updated is
> * specified using the rowId, and it is altered to use the title and
> body
> * values passed in
> *
> * @param rowId id of note to update
> * @param title value to set note title to
> * @param body value to set note body to
> * @return true if the note was successfully updated, false otherwise
> */
> public boolean updateNote(long rowId,String word) {
> ContentValues args = new ContentValues();
> args.put(KEY_WORD, word);
>
> return mDb.update(DATABASE_TABLE, args, KEY_ID + "=" + rowId, null)
>
> > 0;
> }
> }
>
> list_item.xml as follows:
>
> <?xml version="1.0" encoding="utf-8"?>
> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android";
> android:orientation="horizontal"
> android:layout_width="wrap_content"
> android:layout_height="wrap_content">
> <TextView android:id="@+id/word"
> android:layout_width="250dip"
> android:layout_height="wrap_content"/>
> <Button android:id ="@+id/button"
> android:layout_width ="50dip"
> android:layout_height ="wrap_content"/>
> </LinearLayout>
>
> pls help me 。/*******************************************/
> 苗忠良(Miao Zhong-liang)
> MSN:[email protected] <msn%[email protected]>
> BLOG:http://miaozl.spaces.live.com
> /*******************************************/
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