android.database.StaleDataException:试图访问一个游标已关闭后 [英] android.database.StaleDataException: Attempted to access a cursor after it has been closed
问题描述
这是片段活动迫使它关闭时,我preSS home键,错误是尝试它已经关闭后访问光标。哪里是错误。我也尝试getContentResolver()查询(),而不是managedQuery()同样的错误。
和我MainActivity是SherlockFragmentActivity标签和查看传呼机
私人光标getInternalAudioCursor(字符串选择,
的String [] selectionArgs两个){
返回getActivity()。managedQuery(
MediaStore.Audio.Media.INTERNAL_CONTENT_URI,
INTERNAL_COLUMNS,
选择,
selectionArgs两个,
MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
}私人光标getExternalAudioCursor(字符串选择,
的String [] selectionArgs两个){
返回getActivity()。managedQuery(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
EXTERNAL_COLUMNS,
选择,
selectionArgs两个,
MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
}光标createCursor(字符串过滤器){
ArrayList的<串GT; ARGS =新的ArrayList<串GT;();
串选择; 如果(mShowAll){
选择=(_DATA样?);
args.add(%);
}其他{
选择=(;
对于(字符串扩展:CheapSoundFile.getSupportedExtensions()){
args.add(%+扩展名);
如果(selection.length()→1){
选择+ =或;
}
选择+ =(_DATA样?);
选择=选择+AND(IS_MUSIC = 1);
}
选择+ =); 选择=(+选择+)AND(_DATA NOT LIKE?);
args.add(%espeak的数据/划伤%);
} 如果(过滤= NULL&放大器;!&安培; filter.length()0){
过滤=%+过滤+%;
选择=
(+选择+和+
((TITLE等)或(艺术家等)或(ALBUM等)???));
args.add(过滤器);
args.add(过滤器);
args.add(过滤器);
} 的String [] = argsArray args.toArray(新的String [args.size()]); getExternalAudioCursor(选择,argsArray);
getInternalAudioCursor(选择,argsArray); 光标C =新MergeCursor(新光标[] {
getExternalAudioCursor(选择,argsArray)
getInternalAudioCursor(选择,argsArray)});
。getActivity()startManagingCursor(C);
返回℃;
}
Eroor日志:
15 01-13:02:16.049:E / AndroidRuntime(12435):了java.lang.RuntimeException:无法恢复活动{com.my.ringtone / com.my.ringtone .MainActivity}:android.database.StaleDataException:尝试它已被关闭之后访问光标。
01-13 15:02:16.049:E / AndroidRuntime(12435):在android.app.ActivityThread.performResumeActivity(ActivityThread.java:2946)
01-13 15:02:16.049:E / AndroidRuntime(12435):在android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2975)
01-13 15:02:16.049:E / AndroidRuntime(12435):在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1307)
01-13 15:02:16.049:E / AndroidRuntime(12435):在android.os.Handler.dispatchMessage(Handler.java:102)
01-13 15:02:16.049:E / AndroidRuntime(12435):在android.os.Looper.loop(Looper.java:157)
01-13 15:02:16.049:E / AndroidRuntime(12435):在android.app.ActivityThread.main(ActivityThread.java:5356)
01-13 15:02:16.049:E / AndroidRuntime(12435):在java.lang.reflect.Method.invokeNative(本机方法)
01-13 15:02:16.049:E / AndroidRuntime(12435):在java.lang.reflect.Method.invoke(Method.java:515)
01-13 15:02:16.049:E / AndroidRuntime(12435):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:1265)
01-13 15:02:16.049:E / AndroidRuntime(12435):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
01-13 15:02:16.049:E / AndroidRuntime(12435):在dalvik.system.NativeStart.main(本机方法)
01-13 15:02:16.049:E / AndroidRuntime(12435):android.database.StaleDataException:尝试它已被关闭后访问光标所致。
01-13 15:02:16.049:E / AndroidRuntime(12435):在android.database.BulkCursorToCursorAdaptor.throwIfCursorIsClosed(BulkCursorToCursorAdaptor.java:64)
功能 managedQuery()
是德precated。
请使用 getContentResolver()查询(参数..)
代替。
该参数将相同。
这将解决这个问题。
This is fragment activity it force closed when i press home button, error is Attempted to access a cursor after it has been closed. Where is error. i also try getContentResolver().query() instead of managedQuery() same error.
and my MainActivity is SherlockFragmentActivity tabs and view pager
private Cursor getInternalAudioCursor(String selection,
String[] selectionArgs) {
return getActivity().managedQuery(
MediaStore.Audio.Media.INTERNAL_CONTENT_URI,
INTERNAL_COLUMNS,
selection,
selectionArgs,
MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
}
private Cursor getExternalAudioCursor(String selection,
String[] selectionArgs) {
return getActivity().managedQuery(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
EXTERNAL_COLUMNS,
selection,
selectionArgs,
MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
}
Cursor createCursor(String filter) {
ArrayList<String> args = new ArrayList<String>();
String selection;
if (mShowAll) {
selection = "(_DATA LIKE ?)";
args.add("%");
} else {
selection = "(";
for (String extension : CheapSoundFile.getSupportedExtensions()) {
args.add("%." + extension);
if (selection.length() > 1) {
selection += " OR ";
}
selection += "(_DATA LIKE ?)";
selection = selection + "AND (IS_MUSIC=1)";
}
selection += ")";
selection = "(" + selection + ") AND (_DATA NOT LIKE ?)";
args.add("%espeak-data/scratch%");
}
if (filter != null && filter.length() > 0) {
filter = "%" + filter + "%";
selection =
"(" + selection + " AND " +
"((TITLE LIKE ?) OR (ARTIST LIKE ?) OR (ALBUM LIKE ?)))";
args.add(filter);
args.add(filter);
args.add(filter);
}
String[] argsArray = args.toArray(new String[args.size()]);
getExternalAudioCursor(selection, argsArray);
getInternalAudioCursor(selection, argsArray);
Cursor c = new MergeCursor(new Cursor[] {
getExternalAudioCursor(selection, argsArray),
getInternalAudioCursor(selection, argsArray)});
getActivity().startManagingCursor(c);
return c;
}
Eroor log:
01-13 15:02:16.049: E/AndroidRuntime(12435): java.lang.RuntimeException: Unable to resume activity {com.my.ringtone/com.my.ringtone.MainActivity}: android.database.StaleDataException: Attempted to access a cursor after it has been closed.
01-13 15:02:16.049: E/AndroidRuntime(12435): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2946)
01-13 15:02:16.049: E/AndroidRuntime(12435): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2975)
01-13 15:02:16.049: E/AndroidRuntime(12435): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1307)
01-13 15:02:16.049: E/AndroidRuntime(12435): at android.os.Handler.dispatchMessage(Handler.java:102)
01-13 15:02:16.049: E/AndroidRuntime(12435): at android.os.Looper.loop(Looper.java:157)
01-13 15:02:16.049: E/AndroidRuntime(12435): at android.app.ActivityThread.main(ActivityThread.java:5356)
01-13 15:02:16.049: E/AndroidRuntime(12435): at java.lang.reflect.Method.invokeNative(Native Method)
01-13 15:02:16.049: E/AndroidRuntime(12435): at java.lang.reflect.Method.invoke(Method.java:515)
01-13 15:02:16.049: E/AndroidRuntime(12435): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
01-13 15:02:16.049: E/AndroidRuntime(12435): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
01-13 15:02:16.049: E/AndroidRuntime(12435): at dalvik.system.NativeStart.main(Native Method)
01-13 15:02:16.049: E/AndroidRuntime(12435): Caused by: android.database.StaleDataException: Attempted to access a cursor after it has been closed.
01-13 15:02:16.049: E/AndroidRuntime(12435): at android.database.BulkCursorToCursorAdaptor.throwIfCursorIsClosed(BulkCursorToCursorAdaptor.java:64)
Function managedQuery()
is deprecated.
Please use getContentResolver().query(parameters .. )
instead.
The parameters will be same. This will solve the problem.
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