IllegalStateException: Could not move cursor to position x
I have a custom CursorWrapper to provide a filtered ListView. My filter goes through each item, which finds the latest version of each "key" and maps that to instantiateTemplateAdapater()
. When I remove the item (I select it and then call it DeleteFormsTask.execute
) that starts AsyncTask and removes the entry. When I try to delete the file, it returns an error couldn't move cursor to position x
where x is the position of the item to be deleted. There are no errors in the line and I have added my entire error log to it as well.
When I change new SmartCursorAdapter(c)
to SimpleCursorAdapter
, the crash disappears, so it seems to me that the problem is with SmartCursorAdapter
.
Question: How can I fix this problem? I can't even debug it.
SimpleCursorAdapter:
public SimpleCursorAdapter instantiateTemplateAdapter() {
String sortOrder = FormsColumns.DISPLAY_NAME + " ASC, " + FormsColumns.JR_VERSION + " DESC";
Cursor c = getContentResolver().query(FormsColumns.CONTENT_URI, null, null, null, sortOrder);
startManagingCursor(c);
Log.d("FormManagerActivity/instantiateTemplateAdapter", "Cursor count: " + c.getCount());
String[] fromColumns = { FormsColumns.DISPLAY_NAME, FormsColumns.DISPLAY_SUBTEXT, FormsColumns.JR_VERSION };
int[] toViews = { R.id.text1, R.id.text2, R.id.text3 };
return new VersionHidingCursorAdapter(FormsColumns.JR_VERSION, this,
R.layout.two_item, new SmartCursorWrapper(c), fromColumns, toViews);
}
Code for calling the delete method:
mDeleteFormsTask = new DeleteFormsTask();
mDeleteFormsTask.setContentResolver(getContentResolver());
mDeleteFormsTask.setDeleteListener(this);
mDeleteFormsTask.execute(mSelectedIds.toArray(new Long[mSelectedIds.size()]));
OnComplete Listener:
@Override
public void formsDeleteComplete(int deletedForms) {
toast(deletedForms + " form template(s) has been removed");
if (mAdapter != null)
mAdapter.notifyDataSetChanged();
setProgressBarIndeterminateVisibility(false);
}
DeleteFormsTask:
Public class DeleteFormsTask extends AsyncTask {private static final Line t = "DeleteFormsTask";
private ContentResolver cr;
private DeleteFormsListener dl;
private int successCount = 0;
@Override
protected Integer doInBackground(Long... params) {
int deleted = 0;
if (params == null ||cr == null || dl == null) {
return deleted;
}
// delete files from database and then from file system
for (int i = 0; i < params.length; i++) {
if ( isCancelled() ) {
break;
}
try {
Uri deleteForm =
Uri.withAppendedPath(FormsColumns.CONTENT_URI, params[i].toString());
Cursor c = cr.query(deleteForm, null, null, null, null);
String remark = "";
String location = "";
//Log.d("DeleteFormsTask/doInBackground", "Start Deletion");
if (c.moveToFirst()) {
//Log.d("DeleteFormsTask/doInBackground","We error before this?");
remark += c.getString(c.getColumnIndex(FormsColumns.DISPLAY_NAME)) +
"|Version: " + c.getString(c.getColumnIndex(FormsColumns.JR_VERSION));
location += c.getString(c.getColumnIndex(FormsColumns.FORM_FILE_PATH));
}
int wasDeleted = cr.delete(deleteForm, null, null);
Log.d("DeleteFormsTask/doInBackground", "After deletion");
deleted += wasDeleted;
if (wasDeleted > 0) {
ActivityLoggerBeta.getInstance().logDeletedTemplate(location, remark);
}
Log.d("DeleteFormsTask/doInBackground", "After final Delete");
} catch ( Exception ex ) {
Log.e(t,"Exception during delete of: " + params[i].toString() + " exception: " + ex.toString());
}
}
successCount = deleted;
Log.d("DeleteFormsTask/doInBackground", "Right before return.");
return deleted;
}
@Override
protected void onPostExecute(Integer result) {
Log.d("DeleteFormsTask/onPostExecute", "DELETED");
cr = null;
if (dl != null) {
dl.formsDeleteComplete(result);
}
super.onPostExecute(result);
}
@Override
protected void onCancelled() {
cr = null;
if (dl != null) {
dl.formsDeleteComplete(successCount);
}
}
public void setDeleteListener(DeleteFormsListener listener) {
dl = listener;
}
public void setContentResolver(ContentResolver resolver){
cr = resolver;
}
public int getDeleteCount() {
return successCount;
}
}
SmartCursorWrapper:
public class SmartCursorWrapper extends CursorWrapper {
private int[] index;
private int count;
private int pos = 0;
public SmartCursorWrapper(Cursor cursor) {
super(cursor);
//assumption: query must be sorted (ASC form_id, DESC form_version)
count = super.getCount();
index = new int[count];
String prevFormId = "";
for (int i = 0; i < count; i++){
super.moveToPosition(i);
String currFormId = cursor.getString(cursor.getColumnIndex(FormsColumns.JR_FORM_ID));
if (!prevFormId.equals(currFormId)) {
index[pos++] = i;
prevFormId = currFormId;
}
}
count = pos;
pos = 0;
super.moveToFirst();
}
@Override
public boolean move(int offset) {
return moveToPosition(pos + offset);
}
@Override
public boolean moveToNext() {
return moveToPosition(pos + 1);
}
@Override
public boolean moveToPrevious() {
return moveToPosition(pos - 1);
}
@Override
public boolean moveToFirst() {
return moveToPosition(0);
}
@Override
public boolean moveToLast() {
return moveToPosition(count - 1);
}
@Override
public boolean moveToPosition(int position) {
if (position >= count || position < 0) return false;
return super.moveToPosition(index[position]);
}
@Override
public int getCount() {
return count;
}
@Override
public int getPosition() {
return pos;
}
}
Error response:
01-02 17:30:23.285: D/DeleteFormsTask/doInBackground(4995): After deletion
01-02 17:30:23.285: D/AndroidRuntime(4995): Shutting down VM
01-02 17:30:23.285: W/dalvikvm(4995): threadid=1: thread exiting with uncaught exception (group=0x417ccda0)
01-02 17:30:23.295: D/DeleteFormsTask/doInBackground(4995): After final Delete
01-02 17:30:23.295: D/DeleteFormsTask/doInBackground(4995): Right before return
01-02 17:30:23.295: E/AndroidRuntime(4995): FATAL EXCEPTION: main
01-02 17:30:23.295: E/AndroidRuntime(4995): Process: org.marcims.collect, PID: 4995
01-02 17:30:23.295: E/AndroidRuntime(4995): java.lang.IllegalStateException: couldn't move cursor to position 6
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.widget.CursorAdapter.getView(CursorAdapter.java:246)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.widget.AbsListView.obtainView(AbsListView.java:2707)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.widget.ListView.makeAndAddView(ListView.java:1811)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.widget.ListView.fillDown(ListView.java:697)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.widget.ListView.fillSpecific(ListView.java:1360)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.widget.ListView.layoutChildren(ListView.java:1619)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.widget.AbsListView.onLayout(AbsListView.java:2546)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.View.layout(View.java:15656)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.ViewGroup.layout(ViewGroup.java:4869)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1677)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1531)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.widget.LinearLayout.onLayout(LinearLayout.java:1440)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.View.layout(View.java:15656)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.ViewGroup.layout(ViewGroup.java:4869)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.View.layout(View.java:15656)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.ViewGroup.layout(ViewGroup.java:4869)
01-02 17:30:23.295: E/AndroidRuntime(4995): at com.android.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:429)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.View.layout(View.java:15656)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.ViewGroup.layout(ViewGroup.java:4869)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.View.layout(View.java:15656)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.ViewGroup.layout(ViewGroup.java:4869)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2247)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1969)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1201)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6404)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:803)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.Choreographer.doCallbacks(Choreographer.java:603)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.Choreographer.doFrame(Choreographer.java:573)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:789)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.os.Handler.handleCallback(Handler.java:733)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.os.Handler.dispatchMessage(Handler.java:95)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.os.Looper.loop(Looper.java:157)
01-02 17:30:23.295: E/AndroidRuntime(4995): at android.app.ActivityThread.main(ActivityThread.java:5335)
01-02 17:30:23.295: E/AndroidRuntime(4995): at java.lang.reflect.Method.invokeNative(Native Method)
01-02 17:30:23.295: E/AndroidRuntime(4995): at java.lang.reflect.Method.invoke(Method.java:515)
01-02 17:30:23.295: E/AndroidRuntime(4995): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
01-02 17:30:23.295: E/AndroidRuntime(4995): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
01-02 17:30:23.295: E/AndroidRuntime(4995): at dalvik.system.NativeStart.main(Native Method)
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