Android 在CustomCursor适配器getView（）中获取正确的光标
我有一个自定义的游标适配器，其中每一行由一个复选框、文本视图和按钮组成。 当用户选择“我希望按钮显示”复选框时，按钮最初设置为“消失”，以便用户可以单击它并删除相应的行 我的问题是，在我的getView（）中，我无法获取正确的光标，因此请继续获取Android 在CustomCursor适配器getView（）中获取正确的光标,android,listview,custom-cursor,Android,Listview,Custom Cursor,我有一个自定义的游标适配器，其中每一行由一个复选框、文本视图和按钮组成。 当用户选择“我希望按钮显示”复选框时，按钮最初设置为“消失”，以便用户可以单击它并删除相应的行 我的问题是，在我的getView（）中，我无法获取正确的光标，因此请继续获取光标或AutofBoundSexceptions 如果不再需要bindView（），我还想删除它 public class DeleteCampaignCustomCursorAdapater extends CursorAdapter { prote
光标或AutofBoundSexceptionspublic class DeleteCampaignCustomCursorAdapater extends CursorAdapter {
protected static final String TAG = null;
DatabaseHelper myDbHelper;
protected SQLiteDatabase db;
private final Activity context;
private LayoutInflater mInflater;
protected ListView mListView;
private Cursor c;
public static int[] checked;
TextView merchantNameView;
Button deleteButton;
CheckBox selectForDelete;
//ImageView moveButton;
public DeleteCampaignCustomCursorAdapater(Context context, Cursor c) {
super(context, c);
this.context = (Activity) context;
mInflater = LayoutInflater.from(context);
this.c = c;
initializeChecked();
}
@Override
public void bindView(View view, Context context, final Cursor cursor) {
/*myDbHelper = new DatabaseHelper(context); //Links to DatabaseHelper class
merchantNameView = (TextView) view.findViewById(R.id.deleteMerchantNameView);
deleteButton = (Button) view.findViewById(R.id.deleteButton);
//selectForDelete = (CheckBox) view.findViewById(R.id.deleteCheckBox);
//moveButton = (ImageView) view.findViewById(R.id.moveButton);
merchantNameView.setText(cursor.getString(cursor.getColumnIndex("merchantName")));
final int rowID = cursor.getInt(cursor.getColumnIndex("_id"));
//final long rowID = mListView.getSelectedItemId();
if (checked[rowID] == 0) {
selectForDelete.setChecked(false);
} else {
selectForDelete.setChecked(true);
}
selectForDelete.setOnCheckedChangeListener(new OnCheckedChangeListener()
{
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
if ( isChecked )
{
// Make deleteButton appear
RelativeLayout ll = (RelativeLayout) buttonView.getParent();
deleteButton = (Button) ll.findViewById(R.id.deleteButton);
checked[rowID] = 1;
deleteButton.setVisibility(0);
}
else {
//Hide deleteButton
RelativeLayout ll = (RelativeLayout) buttonView.getParent();
deleteButton = (Button) ll.findViewById(R.id.deleteButton);
checked[rowID] = 1;
deleteButton.setVisibility(8);
}
}
});
deleteButton.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
if(rowID > 0) {
//Log.d(TAG, "Button Click. rowID = "+rowID);
myDbHelper.deleteRecordWithID(rowID);
cursor.requery();
notifyDataSetChanged();
initializeChecked(); // re-set the checked array
}
}
}); */
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
return mInflater.inflate(R.layout.delete_campaign_row_layout, null);
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
myDbHelper = new DatabaseHelper(context); //Links to DatabaseHelper class
if (convertView == null) {
mInflater = context.getLayoutInflater();
convertView = mInflater.inflate(R.layout.delete_campaign_row_layout, null);
}
merchantNameView = (TextView) convertView.findViewById(R.id.deleteMerchantNameView);
deleteButton = (Button) convertView.findViewById(R.id.deleteButton);
selectForDelete = (CheckBox) convertView.findViewById(R.id.deleteCheckBox);
merchantNameView.setText(c.getString(c.getColumnIndex("merchantName")));
final int rowID = c.getInt(c.getColumnIndex("_id"));
//final long rowID = mListView.getSelectedItemId();
if (checked[position] == 0) {
selectForDelete.setChecked(false);
} else {
selectForDelete.setChecked(true);
}
selectForDelete.setOnCheckedChangeListener(new OnCheckedChangeListener()
{
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
if ( isChecked )
{
// Make deleteButton appear
RelativeLayout ll = (RelativeLayout) buttonView.getParent();
deleteButton = (Button) ll.findViewById(R.id.deleteButton);
checked[position] = 1;
deleteButton.setVisibility(0);
}
else {
//Hide deleteButton
RelativeLayout ll = (RelativeLayout) buttonView.getParent();
deleteButton = (Button) ll.findViewById(R.id.deleteButton);
checked[position] = 1;
deleteButton.setVisibility(8);
}
}
});
deleteButton.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
if(rowID > 0) {
//Log.d(TAG, "Button Click. rowID = "+rowID);
myDbHelper.deleteRecordWithID(rowID);
c.requery();
notifyDataSetChanged();
initializeChecked(); // re-set the checked array
}
}
});
return convertView;
}
public void initializeChecked() {
checked = new int[c.getCount()];
int i = 0;
while (i < c.getCount()) {
checked[i] = 0;
i++;
}
}
public class DeleteCampaignCustomCursorAdapater extends CursorAdapter {
protected static final String TAG = null;
DatabaseHelper myDbHelper;
protected SQLiteDatabase db;
private final Activity context;
private LayoutInflater mInflater;
protected ListView mListView;
private Cursor c;
public static int[] checked;
TextView merchantNameView;
Button deleteButton;
CheckBox selectForDelete;
//ImageView moveButton;
public DeleteCampaignCustomCursorAdapater(Context context, Cursor c) {
super(context, c);
this.context = (Activity) context;
mInflater = LayoutInflater.from(context);
this.c = c;
c.moveToFirst();
initializeChecked();
}
@Override
public void bindView(View view, Context context, final Cursor cursor) {
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
return mInflater.inflate(R.layout.delete_campaign_row_layout, null);
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
c.moveToPosition(position);
myDbHelper = new DatabaseHelper(context); //Links to DatabaseHelper class
if (convertView == null) {
mInflater = context.getLayoutInflater();
convertView = mInflater.inflate(R.layout.delete_campaign_row_layout, null);
}
merchantNameView = (TextView) convertView.findViewById(R.id.deleteMerchantNameView);
deleteButton = (Button) convertView.findViewById(R.id.deleteButton);
selectForDelete = (CheckBox) convertView.findViewById(R.id.deleteCheckBox);
merchantNameView.setText(c.getString(c.getColumnIndex("merchantName")));
final int rowID = c.getInt(c.getColumnIndex("_id"));
if (checked[position] == 0) {
selectForDelete.setChecked(false);
} else {
selectForDelete.setChecked(true);
}
selectForDelete.setOnCheckedChangeListener(new OnCheckedChangeListener()
{
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
if ( isChecked )
{
// Make deleteButton appear
RelativeLayout ll = (RelativeLayout) buttonView.getParent();
deleteButton = (Button) ll.findViewById(R.id.deleteButton);
checked[position] = 1;
deleteButton.setVisibility(0);
}
else {
//Hide deleteButton
RelativeLayout ll = (RelativeLayout) buttonView.getParent();
deleteButton = (Button) ll.findViewById(R.id.deleteButton);
//checked[position] = 1;
deleteButton.setVisibility(8);
}
}
});
deleteButton.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
if(rowID > 0) {
//Log.d(TAG, "Button Click. rowID = "+rowID);
myDbHelper.deleteRecordWithID(rowID); //Call deleteRecord on selected row
c.requery(); //requery the cursor
notifyDataSetChanged(); //notify the view the data set has changed
initializeChecked(); // re-set the checked array
}
}
});
return convertView;
}
public void initializeChecked() {
checked = new int[c.getCount()];
int i = 0;
while (i < c.getCount()) {
checked[i] = 0;
i++;
}
}
公共类DeleteCampaignCustomCursorAdapter扩展了CursorAdapter{
受保护的静态最终字符串标记=null；
数据库助手myDbHelper；
受保护的数据库数据库；
私人最终活动背景；
私人停车场；
受保护的ListView-mListView；
专用游标c；
公共静态int[]已检查；
TextView商品名称视图；
按钮删除按钮；
复选框selectForDelete；
//图像视图移动按钮；
公共删除活动CustomCursorAdapter（上下文，游标c）{
超级（上下文，c）；
this.context=（活动）上下文；
mInflater=LayoutInflater.from（上下文）；
这个.c=c；
c、 moveToFirst（）；
初始化checked（）；
}
@凌驾
public void bindView（视图视图、上下文上下文、最终光标）{
}
@凌驾
公共视图newView（上下文上下文、光标、视图组父对象）{
返回mInflater.充气（R.layout.delete\u campaign\u row\u layout，null）；
}
@凌驾
公共视图getView（最终整数位置、视图转换视图、视图组父视图）{
c、 移动位置（位置）；
myDbHelper=newDatabaseHelper（上下文）；//指向DatabaseHelper类的链接
if（convertView==null）{
mInflater=context.getLayoutFlater（）；
convertView=mInflater.充气（R.layout.delete\u campaign\u row\u layout，null）；
}
merchantNameView=（TextView）convertView.findViewById（R.id.deleteMerchantNameView）；
deleteButton=（Button）convertView.findViewById（R.id.deleteButton）；
选择ForDelete=（复选框）convertView.findViewById（R.id.deleteCheckBox）；
setText（c.getString（c.getColumnIndex（“merchantName”））；
final int rowID=c.getInt（c.getColumnIndex（“_id”）；
如果（选中[位置]==0）{
选择delete.setChecked（false）；
}否则{
选择ForDelete.setChecked（true）；
}
selectForDelete.setOnCheckedChangeListener（新的OnCheckedChangeListener（）
{
检查更改后的公共无效（复合按钮视图，布尔值已检查）
{
如果（已检查）
{
//使删除按钮出现
RelativeLayout ll=（RelativeLayout）按钮视图。getParent（）；
deleteButton=（Button）ll.findViewById（R.id.deleteButton）；
选中的[位置]=1；
deleteButton.setVisibility（0）；
}
否则{
//隐藏删除按钮
RelativeLayout ll=（RelativeLayout）按钮视图。getParent（）；
deleteButton=（Button）ll.findViewById（R.id.deleteButton）；
//选中的[位置]=1；
deleteButton.setVisibility（8）；
}
}
});
deleteButton.setOnClickListener（新的OnClickListener（）{
@凌驾
公共void onClick（视图v）{
如果（rowID>0）{
//Log.d（标记，“按钮点击.rowID=“+rowID”）；
myDbHelper.deleteRecordWithID（rowID）；//对所选行调用deleteRecord
c、 重新查询（）；//重新查询光标
notifyDataSetChanged（）；//通知视图数据集已更改
initializeChecked（）；//重新设置选中的数组
}
}
});
返回视图；
}
public void initializeChecked（）{
checked=newint[c.getCount（）]；
int i=0；
而（ic.moveToFirst（）initializeChecked（）之前，对构造函数执行code>
编辑
在getView中，首先添加以下内容：
c.moveToPosition(position);
请把航海日志寄出去好吗？有几个对游标的调用，需要知道哪一个正在爆炸。根据这一点，您似乎不应该将getView（）与CustomCursorAdapter
一起使用，但必须有某种方法通过bindView（）
或newView（）获得位置
哪一行是DeleteCampaignCustomCursorAdapter.java:125？它删除了错误，但现在所有活动都显示为第一行。看起来光标没有移动到下一个位置，所以我需要将c.moveToNext（）
放在那里的某个地方…不，需要将光标位置设置为w
c.moveToPosition(position);