问题
I have a weird problem with listview, while using simplecursor adapter. Here is the error
08-31 21:50:14.540: INFO/dalvikvm(12195): Uncaught exception thrown by finalizer (will be discarded):
08-31 21:50:14.540: INFO/dalvikvm(12195): java.lang.IllegalStateException: Binder has been finalized!
08-31 21:50:14.540: INFO/dalvikvm(12195): at android.os.BinderProxy.transact(Native Method)
08-31 21:50:14.540: INFO/dalvikvm(12195): at android.database.BulkCursorProxy.close(BulkCursorNative.java:289)
08-31 21:50:14.540: INFO/dalvikvm(12195): at android.database.BulkCursorToCursorAdaptor.close(BulkCursorToCursorAdaptor.java:141)
08-31 21:50:14.540: INFO/dalvikvm(12195): at android.database.CursorWrapper.close(CursorWrapper.java:43)
08-31 21:50:14.540: INFO/dalvikvm(12195): at android.content.ContentResolver$CursorWrapperInner.close(ContentResolver.java:1575)
08-31 21:50:14.540: INFO/dalvikvm(12195): at android.content.ContentResolver$CursorWrapperInner.finalize(ContentResolver.java:1586)
08-31 21:50:14.540: INFO/dalvikvm(12195): at dalvik.system.NativeStart.run(Native Method)
I have runQueryOnBackgroundThread implemented in my cursorAdapter, which is invoked by the Filter.filter method call from the activity. So I dont have any reference of the cursor in my activity. Everytime I query I understand I get cursor changed callback in my cursor adapter, which extends SimpleCursorAdapter
Here is how it looks
public void changeCursor(Cursor cursor) {
Log.d(TAG, "Cursor changed ... **************** "+ cursor);
if (cursor != null) {
setLoading(false);
}
super.changeCursor(cursor);
initSectionHeaders(cursor);
notifyDataSetChanged();
}
runQueryOnBackgroundThread() just returns a cursor from a query.
Am I missing something, should the cursor be closed or managed anywhere? Any help on the leads would greatly help. Thanks in advance.
**UPDATE** Snippets of my adapter
public Cursor runQueryOnBackgroundThread(CharSequence constraint) {
Log.d(TAG, "runQueryOnBackgroundThread "+ constraint);
if (getFilterQueryProvider() != null) {
return getFilterQueryProvider().runQuery(constraint);
}
return doQuery(constraint, People.CONTENT_URI);
}
private Cursor doQuery(CharSequence constraint, Uri queryUri){
StringBuilder selectionStrBuilder = new StringBuilder();
String selectionArgs[] = null;
String selection = null;
if(constraint!=null){
//ADDING GLOB so that the sql query can interpret linux style wildcards
selectionStrBuilder.append("(UPPER(").append(People.DISPLAY_NAME).append(") GLOB ?)");
selection = selectionStrBuilder.toString();
String constraintStr = constraint.toString().toUpperCase();
//prepend and append '*' - TODO improve
constraintStr = "*"+ constraintStr;
constraintStr +="*";
selectionArgs = new String[]{constraintStr};
}
ContentResolver contentRes = context.getContentResolver();
return contentRes.query(queryUri, null, selection, selectionArgs, People.DISPLAY_NAME);
}
Other than these two functions I have changeCursor overridden as posted earlier and use the cursor in bind view to get the data. I don't close or modify cursor properties anywhere else.
My provider getQuery function looks like
SQLiteDatabase db = dbHelper.getReadableDatabase();
Cursor c = qb.query(db, projection, selection, selectionArgs, null, null, orderBy);
// Tell the cursor what uri to watch,
// so it knows when its source data changes
c.setNotificationUri(getContext().getContentResolver(), uri);
return c;
UPDATE2*
When I run the same program on the emulator I get this stack trace, which is very different from what I see on the tablet.
01-03 17:21:44.130: ERROR/IMemory(9328): binder=0x3891a0 transaction failed fd=-2147483647, size=0, err=-2147483646 (Unknown error: 2147483646)
01-03 17:21:44.130: ERROR/IMemory(9328): cannot dup fd=-2147483647, size=0, err=-2147483646 (Bad file number)
01-03 17:21:44.130: ERROR/IMemory(9328): cannot map BpMemoryHeap (binder=0x3891a0), size=0, fd=-1 (Bad file number)
01-03 17:21:44.130: WARN/dalvikvm(9328): JNI WARNING: JNI method called with exception raised
01-03 17:21:44.130: WARN/dalvikvm(9328): in Ldalvik/system/NativeStart;.run ()V (CallStaticVoidMethodV)
01-03 17:21:44.130: WARN/dalvikvm(9328): Pending exception is:
01-03 17:21:44.130: INFO/dalvikvm(9328): Ljava/lang/RuntimeException;: No memory in memObj
01-03 17:21:44.130: INFO/dalvikvm(9328): at android.database.CursorWindow.native_init(Native Method)
01-03 17:21:44.130: INFO/dalvikvm(9328): at android.database.CursorWindow.<init>(CursorWindow.java:518)
01-03 17:21:44.130: INFO/dalvikvm(9328): at android.database.CursorWindow.<init>(CursorWindow.java:27)
01-03 17:21:44.130: INFO/dalvikvm(9328): at android.database.CursorWindow$1.createFromParcel(CursorWindow.java:493)
01-03 17:21:44.130: INFO/dalvikvm(9328): at android.database.CursorWindow$1.createFromParcel(CursorWindow.java:491)
01-03 17:21:44.130: INFO/dalvikvm(9328): at android.content.ContentProviderNative.onTransact(ContentProviderNative.java:103)
01-03 17:21:44.130: INFO/dalvikvm(9328): at android.os.Binder.execTransact(Binder.java:320)
01-03 17:21:44.130: INFO/dalvikvm(9328): at dalvik.system.NativeStart.run(Native Method)
01-03 17:21:44.130: INFO/dalvikvm(9328): "Binder Thread #3" prio=5 tid=9 NATIVE
01-03 17:21:44.130: INFO/dalvikvm(9328): | group="main" sCount=0 dsCount=0 obj=0x405de828 self=0x8e288
01-03 17:21:44.130: INFO/dalvikvm(9328): | sysTid=9336 nice=0 sched=0/0 cgrp=[fopen-error:24] handle=959480
01-03 17:21:44.130: INFO/dalvikvm(9328): at dalvik.system.NativeStart.run(Native Method)
01-03 17:21:44.130: ERROR/dalvikvm(9328): VM aborting
And Crashes the application.
I found a bug report on this issue here
Anyone faced the same problem? Any help would be appreciated. Thanks
回答1:
Ah finally found a soln to this freaking issue. Just that some cursor in some other part of the framework was open. Works when closed.
来源：https://stackoverflow.com/questions/7265793/android-list-view-with-simplecursor-adapter-crashes-application-no-anr-shown