标签: android-cursoradapter

我有一个像下面这样的列表视图.TextView中的文本来自数据库.

-------------------------
TextView          Button
-------------------------

当我单击按钮时,我想在Toast中显示此行的TextView中的文本.

我的问题如下:当我点击按钮时,我显示的是行的文本,由光标选中.我没有显示按钮所在行的文本.我知道问题是mCursor变量.

我不知道如何解决它.有人有想法吗？

这是我的ModulCursorAdapter:

public class ModuleCursorAdapter extends ResourceCursorAdapter implements OnClickListener {
private Context mContext;
private Cursor mCursor;

    public ModuleCursorAdapter(Context context, Cursor cur) {
        super(context, R.layout.notes_row, cur);
        this.mContext = context;

    }

    @Override
    public View newView(Context context, Cursor cur, ViewGroup parent) {
        LayoutInflater li = LayoutInflater.from(context);           
        return li.inflate(R.layout.notes_row, parent, false);
    }



    @Override
    public void bindView(View view, Context context, Cursor cur) {  
        this.mCursor = cur;

        TextView tvText1 = (TextView)view.findViewById(R.id.text1);            
        Button btnButtonOFF = (Button)view.findViewById(R.id.buttonOFF);

        tvText1.setText(cur.getString(cur.getColumnIndex(NotesDbAdapter.KEY_TITLE)));

        int idRow …

我读了这个问题,它说不要担心,但我想我需要一些保证.

我的自定义CursorAdapter的bindView:

@Override
public void bindView(View view, Context context, Cursor c) {
    // get handles for views in xml
    ImageView imageView = (ImageView)view.findViewById(R.id.add_lvrow_image);
    TextView titleView = (TextView)view.findViewById(R.id.add_lvrow_title);

    // get data from cursor and "massage" if necessary
    String imageUri = c.getString(c.getColumnIndex(CollectionsTable.COL_IMAGEURI));
    String title = c.getString(c.getColumnIndex(CollectionsTable.COL_TITLE));

    // terrible time getting run-time sizes of imageView, hardcode for now
    int XML_WIDTH = 100;
    int XML_HEIGHT = 100;       

    Log.d(TAG, SCOPE + "bindView called: " +count);
    count++;

    // use static util class
    ImageUtils.loadBitmap(context, imageUri, …

我不太明白,提供商是指ContentProvider吗？或者我认为它们是一样的.

有任何想法吗？

场景 朋友我有一个ListView,我在FrameLayout中使用它,它将为我的DrawerLayout提供滑动菜单.我在ListView中有自定义按钮和文本,它们在单独的xml中定义为listitems.现在我使用customAdapter为此ListView提供数据,该扩展CursorAdapter ...

我想获得点击的位置以及按钮点击事件以相应地获取数据...我的代码如下......

列表项XML

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" 
    android:descendantFocusability="blocksDescendants"
    >


     <!--  ToggleButton
        android:id="@+id/button"
        android:layout_width="30dp"
        android:layout_height="30dp"
        android:layout_margin="10dp"
        style="@style/toggleButton"
        android:background="@drawable/silent_button_selector"
        android:focusable="false"
         /> --> 

    <ImageButton
        android:id="@+id/button"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_margin="10dp"
        android:src="@drawable/icon_button"
        />


    <TextView 
        android:id="@+id/calendarName"
        android:layout_width="wrap_content"
        android:layout_margin="10dp"
        android:layout_height="wrap_content"
        android:textSize="25sp"
        android:layout_toRightOf="@+id/button"
        />


</RelativeLayout>

适配器类:

public class CalendarListAdapter extends CursorAdapter implements OnClickListener{

    @SuppressWarnings("deprecation")
    public CalendarListAdapter(Context context, Cursor c) {
        super(context, c);
        // TODO Auto-generated constructor stub
    }

    @Override
    public void bindView(View view, Context context, Cursor cursor) {
        // TODO Auto-generated method stub
        TextView …

我SimpleCursorAdapter为我扩展的自定义适配器ListFragment无法正确显示数据库中的项目.它不会在TextView中显示文本,我还需要对光标做什么才能显示正确的文本？

我以为我必须覆盖bindView但没有效果

设置适配器:

public void populateList(){

        String[] fields = new String[] {BowlersDB.NAME};
        Cursor c = getActivity().getContentResolver().query(BowlersDB.CONTENT_URI,
                new String[] {BowlersDB.ID,BowlersDB.NAME},null,null,BowlersDB.NAME + " COLLATE LOCALIZED ASC");

mAdapter = new CheckAdapter(getActivity(),R.layout.check_listview,c,fields,new int[] {R.id.nameCheckTV});


        setListAdapter(mAdapter);   

        getLoaderManager().initLoader(0,null,this);
    }

适配器:

public class CheckAdapter extends SimpleCursorAdapter{

    Context context;
    Cursor c;

    public CheckAdapter(Context context, int layout, Cursor c,String[] from, int[] to) {
        super(context, layout, c, from, to);
        this.context = context;
        this.c = c;
        // TODO Auto-generated constructor stub
    }

    @Override
    public void …

我有一个微调器,我从数据库中填充.我想选择默认选择列表中的哪个项目.我需要找出列表中的哪个项目(CursorAdapter)具有值"Default Away"并将其设置为所选值.

    Spinner away_team_spinner = (Spinner)findViewById(R.id.away_team_spinner);
    DatabaseHelper db = new DatabaseHelper(this);
    Cursor team_list = db.getTeams(p_game_level);
    startManagingCursor(team_list);

    String[] team_name = new String[]{colTeamName};
    int[] to = new int[]{android.R.id.text1};
    SimpleCursorAdapter adapter =
      new SimpleCursorAdapter(this, android.R.layout.simple_spinner_item, team_list, team_name, to );
    adapter.setDropDownViewResource( android.R.layout.simple_spinner_dropdown_item );
    away_team_spinner.setAdapter(adapter);

    //// HERE IS WHERE MY ERRORS START ////

    Log.i("NEW_GAME","Before set arrayadapter");
    CursorAdapter adapter_choose = (CursorAdapter)away_team_spinner.getAdapter();
    Log.i("NEW_GAME","Before set setSelection");
    away_team_spinner.setSelection(adapter_choose.getPosition("Default Away"));

这是我通过在这个网站上搜索找到的"解决方案".但是,我不能将"getPosition"与CursorAdapter对象一起使用.我尝试了ArrayAdapter,但是在"之前设置arrayadapter"注释错误之后的行"android.widget.SimpleCursorAdapter无法转换为android.widget.ArrayAdapter".我究竟做错了什么？谢谢.

我正在制作一个我使用数据库的android食谱应用程序.在数据库中有一个名为""images"的列,其中我存储了我在drawable文件夹中存储的食谱图片文件的名称.现在我想用食谱制作一个列表,显示:1)标题配方2)一个简短的描述和3)配方的图像为了做到这一点,我使用Simplecursoradaptor.

我的问题是我无法显示图像.

我想从"images"列中读取文件名,然后在我的imageview中设置图像(R.id.imageview1)

这是我的代码,直到现在:

public class RecipesMainActivity extends Activity 
{

public static final String ROW_ID = "row_id"; //Intent extra key
private ListView esodaListView;  // the ListActivity's ListView
private SimpleCursorAdapter esodaAdapter; // adapter for ListView
DatabaseConnector databaseConnector = new DatabaseConnector(RecipesMainActivity.this);


// called when the activity is first created
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_recipes_main);
    esodaListView = (ListView)findViewById(R.id.esodaList);
    esodaListView.setOnItemClickListener(viewEsodaListener);

    databaseConnector.open();

    // map each esoda to a TextView in the ListView layout
    // The desired …

我有一个自定义的CursorAdapter类,它使用字母索引器,我想实现可过滤,但我有一些问题让它正常运行.

    c = db.selectData();


    lv = (ListView) findViewById(android.R.id.list);
    searchTerm = (EditText) findViewById(R.id.inputSearch);

    lv.setFastScrollEnabled(true);

    adapter = new MyCursorAdapter(getApplicationContext(), R.layout.rowlayout, c, new String[]{"_id, name, company, job_title"},
            new int[]{R.id.company, R.id.job_title, R.id.name});

    adapter.setFilterQueryProvider(new FilterQueryProvider() {
        public Cursor runQuery(CharSequence constraint) {
            // Search for states whose names begin with the specified letters.
            Cursor cursor = db.searchAttendees(constraint.toString());
            return cursor;

        }
    });

    lv.setAdapter(adapter);

    getListView().setTextFilterEnabled(true);

    searchTerm.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            System.out.println("Text ["+s+"]");
            adapter.getFilter().filter(s.toString());
        }

        @Override
        public void beforeTextChanged(CharSequence …

我想在制作特定按钮(动作)时更改行布局.

public class DbCursorAdapter extends CursorAdapter {
private View selectedView;
private boolean isListSingleColumn = true;

private Cursor mCursor;
private final LayoutInflater mInflater;

private static final int TYPE_ITEM_SINGLE_COLUMN = 0;
private static final int TYPE_ITEM_MULTI_COLUMN = 1;

/**
 * DbCursorAdapter constructor
 * 
 * @param context
 *            - The context
 * @param cursor
 *            - The cursor used to make queries
 */
public DbCursorAdapter(Context context, Cursor cursor) {
    super(context, cursor, false);
    this.mContext = context;
    this.mCursor = cursor;
    this.mInflater = LayoutInflater.from(context);
}

@Override …

在我的活动中,我有一个代表医生的列表视图.每行都有医生的名字和一个复选框.我已经实现了一个回调接口,这样当选择医生时,所有其他医生都会从列表视图中删除,只剩下选定的医生.

它似乎有效,因为一旦我选择了医生,所有其他人都被移除了.当我取消检查医生时,每个人都被加回.但是,如果我现在选择一位不同的医生,原来的医生会停下来而其他所有医生都会被移除.

为了更好地解释这个问题,让我们说当我开始活动时,我在列表视图中有两位医生,Joel和Sam.我想我想选择Joel,所以我这样做,而且Sam从列表中删除了.然后,我意识到我错了,所以我取消选择乔尔,我现在看到列表中的乔尔和萨姆.最后,我选择了Sam.但是,Sam被从列表中删除,只有Joel再次出现.

以下是适配器类的一些代码片段:

@Override
public void bindView(View view, Context context, Cursor cursor) {
    ViewHolder viewHolder = (ViewHolder) view.getTag();

    final long id = cursor.getLong(cursor.getColumnIndex(DoctorEntry._ID));
    String firstName = cursor.getString(cursor.getColumnIndex(DoctorEntry.COLUMN_FIRSTNAME));

    viewHolder.nameView.setText(firstName);

    viewHolder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            if(mCallbacks != null){
                if(isChecked){
                    mCallbacks.onDoctorChecked(id);
                } else{
                    mCallbacks.onDoctorUnchecked();
                }
            }
        }
    });
}

public void onRegisterCallbacks(DoctorAdapterCallbacks activity){
    mCallbacks = activity;
}

public static interface DoctorAdapterCallbacks{
    void onDoctorChecked(long id);

    void onDoctorUnchecked();
}

在我的活动中,我有以下实现:

@Override
public void onDoctorChecked(long id) { …