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kann mir jeder helfen.listview ImageButton item setImageResource geändert, aber wenn scroll listview, vorherige Bild wieder angezeigt
Ich habe ListView Element aus der Datenbank, wenn ich eine ImageButton hinzufügen.
hier ist meine Ansicht Bild-Taste ..
<ImageButton
android:id="@+id/heart"
android:layout_width="32dp"
android:layout_height="32dp"
android:src="@drawable/heart"
android:layout_gravity="right|top"
android:background="#ffffff" />
und in meinem Adapter habe ich OnClickListener Ereignis ..
buttonHeart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
if (arg0 != null) {
FragmentOne_DbAdapter database=new FragmentOne_DbAdapter(context);
database.open();
if(favorite.matches("0")) {
database.updateItemFavorite(_id,"1");
buttonHeart.setImageResource(R.drawable.heartred);
}else if(favorite.matches("1")){
database.updateItemFavorite(_id, "0");
buttonHeart.setImageResource(R.drawable.heart);
}
}
}
});
in meinem OnClickListener i überprüfen if(favorite.matches("0")) i dann setImageResource(R.drawable.heartred);
sonst if(favorite.matches("1")) dann i setImageResource(R.drawable.heart);
dieses Ding ist gearbeitet.
wenn der Knopf Herz, wenn ich es angeklickt, um es zu heartred ändern
aber das Problem ist, wenn ich die Listenansicht scrollen, die heartred wieder an der Reihe zu Herzen.
bitte helfen Sie mir.
hier ist die komplette Adapter ..
public class FragmentOne_Adapter extends CursorAdapter {
public FragmentOne_Adapter(Context context, Cursor c, int flags) {
super(context, c, flags);
// TODO Auto-generated constructor stub
}
@Override
public void bindView(View view, final Context context, final Cursor cursor) {
// TODO Auto-generated method stub
TextView txtTitle = (TextView) view.findViewById(R.id.title);
TextView txtArtist = (TextView) view.findViewById(R.id.artist);
TextView txtVolume = (TextView) view.findViewById(R.id.volume);
TextView txtNumber = (TextView) view.findViewById(R.id.number);
final ImageButton buttonHeart = (ImageButton) view.findViewById(R.id.heart);
final int _id = cursor.getInt(cursor.getColumnIndexOrThrow("_id"));
String title = cursor.getString(cursor.getColumnIndexOrThrow("title"));
String artist = cursor.getString(cursor.getColumnIndexOrThrow("artist"));
String volume = cursor.getString(cursor.getColumnIndexOrThrow("volume"));
final String favorite = cursor.getString(cursor.getColumnIndexOrThrow("favorite"));
String number = cursor.getString(cursor.getColumnIndexOrThrow("number"));
// Populate fields with extracted properties
txtTitle.setText(title);
txtArtist.setText(artist);
txtVolume.setText(volume);
txtNumber.setText(number);
if(favorite.matches("0")) {
buttonHeart.setImageResource(R.drawable.heart);
}else if(favorite.matches("1")){
buttonHeart.setImageResource(R.drawable.heartred);
}
buttonHeart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
if (arg0 != null) {
FragmentOne_DbAdapter database=new FragmentOne_DbAdapter(context);
database.open();
if(favorite.matches("0")) {
database.updateItemFavorite(_id,"1");
buttonHeart.setImageResource(R.drawable.heartred);
}else if(favorite.matches("1")){
database.updateItemFavorite(_id, "0");
buttonHeart.setImageResource(R.drawable.heart);
}
}
}
});
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
// TODO Auto-generated method stub
return LayoutInflater.from(context).inflate(R.layout.fragment_fragment_one_slview, parent, false);
}
}
hier mein Fragment ..
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_fragment_one, container, false);
TabHost host = (TabHost) rootView.findViewById(R.id.tabHost);
host.setup();
//Tab 1
TabHost.TabSpec spec = host.newTabSpec("SONG LIST");
spec.setContent(R.id.tab1);
spec.setIndicator("SONG LIST");
host.addTab(spec);
player1ESearch = (EditText) rootView.findViewById(R.id.player1Search);
listView = (ListView) rootView.findViewById(R.id.slPlayer1ListView);
dbHelper = new FragmentOne_DbAdapter(getActivity());
dbHelper.open();
//Clean all data
//dbHelper.deleteAllPlayer1();
//Add some data
dbHelper.insertPlayer1Songlist();
//Generate ListView from SQLite Database
displayPlayer1ListView();
ImageButton dplayer1ESearch=(ImageButton) rootView.findViewById(R.id.delete);
dplayer1ESearch.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
player1ESearch.setText("");
}
});
//Tab 2
spec = host.newTabSpec("NEW SONGS");
spec.setContent(R.id.tab2);
spec.setIndicator("NEW SONGS");
host.addTab(spec);
//Tab 3
spec = host.newTabSpec("FAVORITES");
spec.setContent(R.id.tab3);
spec.setIndicator("FAVORITES");
host.addTab(spec);
return rootView;
}
private void displayPlayer1ListView() {
Cursor cursor = dbHelper.fetchAllPlayer1();
FragmentOneAdapter = new FragmentOne_Adapter(getActivity(), cursor, 0);
listView.setAdapter(FragmentOneAdapter);
player1ESearch.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable s) {
}
public void beforeTextChanged(CharSequence s, int start,
int count, int after) {
}
public void onTextChanged(CharSequence s, int start,
int before, int count) {
FragmentOneAdapter.getFilter().filter(s.toString());
}
});
FragmentOneAdapter.setFilterQueryProvider(new FilterQueryProvider() {
public Cursor runQuery(CharSequence constraint) {
return dbHelper.fetchPlayer1ByTitle(constraint.toString());
}
});
}
und meine Datenbank-Adapter hier ist ..
public class FragmentOne_DbAdapter {
public static final String KEY_ROWID = "_id";
public static final String KEY_TITLE = "title";
public static final String KEY_ARTIST = "artist";
public static final String KEY_VOLUME = "volume";
public static final String KEY_TYPE = "type";
public static final String KEY_FAVORITE = "favorite";
public static final String KEY_NUMBER = "number";
private static final String TAG = "FragmentOne_DbAdapter";
private DatabaseHelper mDbHelper;
private SQLiteDatabase mDb;
private static final String DATABASE_NAME = "Virtualsongbook";
private static final String SQLITE_TABLE = "Player1";
private static final int DATABASE_VERSION = 1;
private final Context mCtx;
private static final String DATABASE_CREATE =
"CREATE TABLE if not exists " + SQLITE_TABLE + " (" +
KEY_ROWID + " integer PRIMARY KEY autoincrement," +
KEY_TITLE + "," +
KEY_ARTIST + "," +
KEY_VOLUME + "," +
KEY_TYPE + "," +
KEY_FAVORITE + "," +
KEY_NUMBER + ")";
private static class DatabaseHelper extends SQLiteOpenHelper {
DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
//Log.w(TAG, DATABASE_CREATE);
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 " + SQLITE_TABLE);
onCreate(db);
}
}
public FragmentOne_DbAdapter(Context ctx) {
this.mCtx = ctx;
}
public FragmentOne_DbAdapter open() throws SQLException {
mDbHelper = new DatabaseHelper(mCtx);
mDb = mDbHelper.getWritableDatabase();
return this;
}
public void close() {
if (mDbHelper != null) {
mDbHelper.close();
}
}
private boolean isRecordExistInDatabase(String tableName, String field, String value) {
String query = "SELECT * FROM " + tableName + " WHERE " + field + " = '" + value + "'";
Cursor c = mDb.rawQuery(query, null);
if (c.moveToFirst()) {
c.close();
return true;
}
c.close();
return false;
}
public long createPlayer1(String title,
String artist, String volume,
String type, String favorite, String number) {
if(isRecordExistInDatabase(SQLITE_TABLE, KEY_NUMBER, number)){
return 0;
}
ContentValues initialValues = new ContentValues();
initialValues.put(KEY_TITLE, title);
initialValues.put(KEY_ARTIST, artist);
initialValues.put(KEY_VOLUME, volume);
initialValues.put(KEY_TYPE, type);
initialValues.put(KEY_FAVORITE, favorite);
initialValues.put(KEY_NUMBER, number);
return mDb.insert(SQLITE_TABLE, null, initialValues);
}
public boolean deleteAllPlayer1() {
int doneDelete = 0;
doneDelete = mDb.delete(SQLITE_TABLE, null , null);
//Log.w(TAG, Integer.toString(doneDelete));
return doneDelete > 0;
}
public Cursor fetchPlayer1ByTitle(String titleText) throws SQLException {
//Log.w(TAG, titleText);
Cursor mCursor = null;
if (titleText == null || titleText.length() == 0) {
mCursor = mDb.query(SQLITE_TABLE, new String[] {KEY_ROWID,
KEY_TITLE, KEY_ARTIST, KEY_VOLUME, KEY_TYPE, KEY_FAVORITE, KEY_NUMBER},
null, null, null, null, null);
}
else {
mCursor = mDb.query(true, SQLITE_TABLE, new String[] {KEY_ROWID,
KEY_TITLE, KEY_ARTIST, KEY_VOLUME, KEY_TYPE, KEY_FAVORITE, KEY_NUMBER},
KEY_TITLE + " like '%" + titleText + "%'", null,
null, null, null, null);
}
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
public Cursor fetchAllPlayer1() {
Cursor mCursor = mDb.query(SQLITE_TABLE, new String[] {KEY_ROWID,
KEY_TITLE, KEY_ARTIST, KEY_VOLUME, KEY_TYPE, KEY_FAVORITE, KEY_NUMBER},
null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
public boolean updateItemFavorite(long rowId, String favorite) {
int doneUpdate = 0;
ContentValues values = new ContentValues();
values.put(KEY_FAVORITE, favorite);
doneUpdate = mDb.update(SQLITE_TABLE, values, KEY_ROWID + "=" + rowId,null);
return doneUpdate > 0;
}
public void insertPlayer1Songlist() {
//TYPE
//0 - NONE
//1 - NEW
createPlayer1("Song Title 1", "Artist 1", "Vol 1","0","0","12341");
createPlayer1("Song Title 2", "Artist 2", "Vol 2","0","0","12342");
createPlayer1("Song Title 3", "Artist 3", "Vol 3","0","0","12343");
createPlayer1("Song Title 4", "Artist 4", "Vol 4","0","0","12344");
createPlayer1("Song Title 5", "Artist 5", "Vol 5","0","0","12345");
createPlayer1("Song Title 6", "Artist 6", "Vol 6","0","0","12346");
createPlayer1("Song Title 7", "Artist 7", "Vol 7","0","0","12347");
createPlayer1("Song Title 8", "Artist 8", "Vol 8","0","0","12348");
createPlayer1("Song Title 9", "Artist 9", "Vol 9","0","0","12349");
createPlayer1("Song Title 10", "Artist 10", "Vol 10","0","0","12310");
createPlayer1("Song Title 11", "Artist 11", "Vol 11","0","0","12311");
createPlayer1("Song Title 12", "Artist 12", "Vol 12","0","0","12312");
createPlayer1("Joemar", "Artist 1", "Vol 1","0","0","09876");
createPlayer1("Joehamir", "Artist 2", "Vol 2","0","0","76543");
createPlayer1("Joenair", "Artist 3", "Vol 3","0","0","43211");
}
}
Bild von dem, was geschieht,
Dank,
joe
In Ihrem Adapters getView Methode, rebind Ihre Daten unter Verwendung der gleichen favorite.matches .... Logik des Imageview zurücksetzen . – Abbas
ich benutze bindView .. – Joe
Welchen Adapter verwendest du? Sie sollten Ihren eigenen Adapter erstellen, der sich von BaseAdapter erstreckt ... Oder verwenden Sie RecyclerView? – Abbas