当我调试我的应用程序时出现错误，我无法真正找到我做错了什么，我真的不知道为什么有一个背后的最爱，希望有人可以给我一个提示，谢谢。<登记/>
logcat的：
02-13 07：42：49.070 1331-1331 / me.knoxc.fdemo E / SQLiteLog：（1）没有这样的列：favorite1 02-13 07：42：49.082 1331-1331 / me.knoxc.fdemo E / AndroidRuntime：FATAL EXCEPTION：main android.database.sqlite.SQLiteException：没有这样的列：favorite1（代码1）:,同时编译：SELECT（SELECT COUNT（）FROM条目WHERE isread IS NULL），（SELECT COUNT（）FROM条目WHERE favorite1）FROM条目JOIN（SELECT _id AS joined_feed_id，name，url，icon，groupid FROM feeds）AS f ON（entries.feedid = f.joined_feed_id） 在android.database.sqlite.SQLiteConnection.nativePrepareStatement（本机方法） 在android.database.sqlite.SQLiteConnection.acquirePreparedStatement（SQLiteConnection.java:889） 在android.database.sqlite.SQLiteConnection.prepare（SQLiteConnection.java:500） 在android.database.sqlite.SQLiteSession.prepare（SQLiteSession.java:588） 在android.database.sqlite.SQLiteProgram。（SQLiteProgram.java:58） 在android.database.sqlite.SQLiteQuery。（SQLiteQuery.java:37） 在android.database.sqlite.SQLiteDirectCursorDriver.query（SQLiteDirectCursorDriver.java:44） 在android.database.sqlite.SQLiteDatabase.rawQueryWithFactory（SQLiteDatabase.java:1314） 在android.database.sqlite.SQLiteQueryBuilder.query（SQLiteQueryBuilder.java:400） 在android.database.sqlite.SQLiteQueryBuilder.query（SQLiteQueryBuilder.java:294） at me.knoxc.fdemo.provider.FeedDataContentProvider.query（FeedDataContentProvider.java:269） 在android.content.ContentProvider.query（ContentProvider.java:744） 在android.content.ContentProvider $ Transport.query（ContentProvider.java:199） 在android.content.ContentResolver.query（ContentResolver.java:414） 在android.content.ContentResolver.query（ContentResolver.java:357） at me.knoxc.fdemo.adapter.DrawerAdapter.updateNumbers（DrawerAdapter.java:208） at me.knoxc.fdemo.adapter.DrawerAdapter。（DrawerAdapter.java:60） at me.knoxc.fdemo.activity.MainActivity.onLoadFinished（MainActivity.java:331） at me.knoxc.fdemo.activity.MainActivity.onLoadFinished（MainActivity.java:39） 在android.app.LoaderManagerImpl $ LoaderInfo.callOnLoadFinished（LoaderManager.java:483） 在android.app.LoaderManagerImpl $ LoaderInfo.onLoadComplete（LoaderManager.java:451） 在android.content.Loader.deliverResult（Loader.java:144） 在android.content.CursorLoader.deliverResult（CursorLoader.java:110） 在android.content.CursorLoader.deliverResult（CursorLoader.java:43） 在android.content.AsyncTaskLoader.dispatchOnLoadComplete（AsyncTaskLoader.java:256） 在android.content.AsyncTaskLoader $ LoadTask.onPostExecute（AsyncTaskLoader.java:91） 在android.os.AsyncTask.finish（AsyncTask.java:631） 在android.os.AsyncTask.access $ 600（AsyncTask.java:177） 在android.os.AsyncTask $ InternalHandler.handleMessage（AsyncTask.java:644） 在android.os.Handler.dispatchMessage（Handler.java:99） 在android.os.Looper.loop（Looper.java:137） 在android.app.ActivityThread.main（ActivityThread.java:5103） at java.lang.reflect.Method.invokeNative（Native Method） 在java.lang.reflect.Method.invoke（Method.java:525） 在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:737） 在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:553） 在dalvik.system.NativeStart.main（原生方法）
FeedDataContentProvider.java的密钥代码
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
SQLiteQueryBuilder queryBuilder = new SQLiteQueryBuilder();
int matchCode = URI_MATCHER.match(uri);
if ((matchCode == URI_FEEDS || matchCode == URI_GROUPS || matchCode == URI_FEEDS_FOR_GROUPS) && sortOrder == null) {
sortOrder = FeedData.FeedColumns.PRIORITY;
}
switch (matchCode) {
case URI_GROUPED_FEEDS: {
queryBuilder.setTables(FeedData.FEEDS_TABLE_WITH_GROUP_PRIORITY);
sortOrder = "IFNULL(group_priority, " + FeedData.FeedColumns.PRIORITY + "), IFNULL(" + FeedData.FeedColumns.GROUP_ID + ", " + FeedData.FeedColumns._ID + "), " + FeedData.FeedColumns.IS_GROUP + " DESC, " + FeedData.FeedColumns.PRIORITY;
break;
}
case URI_GROUPS: {
queryBuilder.setTables(FeedData.FeedColumns.TABLE_NAME);
queryBuilder.appendWhere(new StringBuilder(FeedData.FeedColumns.IS_GROUP).append(Constants.DB_IS_TRUE).append(Constants.DB_OR)
.append(FeedData.FeedColumns.GROUP_ID).append(Constants.DB_IS_NULL));
break;
}
case URI_FEEDS_FOR_GROUPS: {
queryBuilder.setTables(FeedData.FeedColumns.TABLE_NAME);
queryBuilder.appendWhere(new StringBuilder(FeedData.FeedColumns.GROUP_ID).append('=').append(uri.getPathSegments().get(1)));
break;
}
case URI_GROUP:
case URI_FEED: {
queryBuilder.setTables(FeedData.FeedColumns.TABLE_NAME);
queryBuilder.appendWhere(new StringBuilder(FeedData.FeedColumns._ID).append('=').append(uri.getPathSegments().get(1)));
break;
}
case URI_FEEDS: {
queryBuilder.setTables(FeedData.FeedColumns.TABLE_NAME);
queryBuilder.appendWhere(new StringBuilder(FeedData.FeedColumns.IS_GROUP).append(Constants.DB_IS_NULL));
break;
}
case URI_FILTERS: {
queryBuilder.setTables(FeedData.FilterColumns.TABLE_NAME);
break;
}
case URI_FILTERS_FOR_FEED: {
queryBuilder.setTables(FeedData.FilterColumns.TABLE_NAME);
queryBuilder.appendWhere(new StringBuilder(FeedData.FilterColumns.FEED_ID).append('=').append(uri.getPathSegments().get(1)));
break;
}
case URI_ENTRY_FOR_FEED:
case URI_ENTRY_FOR_GROUP:
case URI_SEARCH_ENTRY: {
queryBuilder.setTables(FeedData.ENTRIES_TABLE_WITH_FEED_INFO);
queryBuilder.appendWhere(new StringBuilder(FeedData.EntryColumns._ID).append('=').append(uri.getPathSegments().get(3)));
break;
}
case URI_ENTRIES_FOR_FEED: {
queryBuilder.setTables(FeedData.ENTRIES_TABLE_WITH_FEED_INFO);
queryBuilder.appendWhere(new StringBuilder(FeedData.EntryColumns.FEED_ID).append('=').append(uri.getPathSegments().get(1)));
break;
}
case URI_ENTRIES_FOR_GROUP: {
queryBuilder.setTables(FeedData.ENTRIES_TABLE_WITH_FEED_INFO);
queryBuilder.appendWhere(new StringBuilder(FeedData.FeedColumns.GROUP_ID).append('=').append(uri.getPathSegments().get(1)));
break;
}
case URI_ALL_ENTRIES:
case URI_ENTRIES: {
queryBuilder.setTables(FeedData.ENTRIES_TABLE_WITH_FEED_INFO);
break;
}
case URI_SEARCH: {
queryBuilder.setTables(FeedData.ENTRIES_TABLE_WITH_FEED_INFO);
queryBuilder.appendWhere(getSearchWhereClause(uri.getPathSegments().get(2)));
break;
}
case URI_FAVORITES_ENTRY:
case URI_ALL_ENTRIES_ENTRY:
case URI_ENTRY: {
queryBuilder.setTables(FeedData.ENTRIES_TABLE_WITH_FEED_INFO);
queryBuilder.appendWhere(new StringBuilder(FeedData.EntryColumns._ID).append('=').append(uri.getPathSegments().get(1)));
break;
}
case URI_FAVORITES: {
queryBuilder.setTables(FeedData.ENTRIES_TABLE_WITH_FEED_INFO);
queryBuilder.appendWhere(new StringBuilder(FeedData.EntryColumns.IS_FAVORITE).append(Constants.DB_IS_TRUE));
break;
}
case URI_TASKS: {
queryBuilder.setTables(FeedData.TaskColumns.TABLE_NAME);
break;
}
case URI_TASK: {
queryBuilder.setTables(FeedData.TaskColumns.TABLE_NAME);
queryBuilder.appendWhere(new StringBuilder(FeedData.EntryColumns._ID).append('=').append(uri.getPathSegments().get(1)));
break;
}
default:
throw new IllegalArgumentException("Illegal query. Match code=" + matchCode + "; uri=" + uri);
}
SQLiteDatabase database = mDatabaseHelper.getReadableDatabase();
Cursor cursor = queryBuilder.query(database, projection, selection, selectionArgs, null, null, sortOrder);
cursor.setNotificationUri(getContext().getContentResolver(), uri);
return cursor;
}<br>
FeedData.java的密钥代码
public static class EntryColumns implements BaseColumns {
public static final String TABLE_NAME = "entries";
public static final String FEED_ID = "feedid";
public static final String TITLE = "title";
public static final String ABSTRACT = "abstract";
public static final String MOBILIZED_HTML = "mobilized";
public static final String DATE = "date";
public static final String FETCH_DATE = "fetch_date";
public static final String IS_READ = "isread";
public static final String LINK = "link";
public static final String IS_FAVORITE = "favorite";
public static final String ENCLOSURE = "enclosure";
public static final String GUID = "guid";
public static final String AUTHOR = "author";
public static final String IMAGE_URL = "image_url";
public static final String[] PROJECTION_ID = new String[]{EntryColumns._ID};
public static final String WHERE_READ = EntryColumns.IS_READ + Constants.DB_IS_TRUE;
public static final String WHERE_UNREAD = "(" + EntryColumns.IS_READ + Constants.DB_IS_NULL + Constants.DB_OR + EntryColumns.IS_READ + Constants.DB_IS_FALSE + ')';
public static final String[][] COLUMNS = new String[][]{{_ID, TYPE_PRIMARY_KEY}, {FEED_ID, TYPE_EXTERNAL_ID}, {TITLE, TYPE_TEXT},
{ABSTRACT, TYPE_TEXT}, {MOBILIZED_HTML, TYPE_TEXT}, {DATE, TYPE_DATE_TIME}, {FETCH_DATE, TYPE_DATE_TIME}, {IS_READ, TYPE_BOOLEAN}, {LINK, TYPE_TEXT},
{IS_FAVORITE, TYPE_BOOLEAN}, {ENCLOSURE, TYPE_TEXT}, {GUID, TYPE_TEXT}, {AUTHOR, TYPE_TEXT}, {IMAGE_URL, TYPE_TEXT}};
public static final String WHERE_NOT_FAVORITE = "(" + EntryColumns.IS_FAVORITE + Constants.DB_IS_NULL + Constants.DB_OR + EntryColumns.IS_FAVORITE + Constants.DB_IS_FALSE + ')';
public static Uri ENTRIES_FOR_FEED_CONTENT_URI(String feedId) {
return Uri.parse(CONTENT_AUTHORITY + "/feeds/" + feedId + "/entries");
}
public static Uri ENTRIES_FOR_FEED_CONTENT_URI(long feedId) {
return Uri.parse(CONTENT_AUTHORITY + "/feeds/" + feedId + "/entries");
}
public static final Uri CONTENT_URI = Uri.parse(CONTENT_AUTHORITY + "/entries");
public static Uri ENTRIES_FOR_GROUP_CONTENT_URI(String groupId) {
return Uri.parse(CONTENT_AUTHORITY + "/groups/" + groupId + "/entries");
}
public static Uri ENTRIES_FOR_GROUP_CONTENT_URI(long groupId) {
return Uri.parse(CONTENT_AUTHORITY + "/groups/" + groupId + "/entries");
}
public static Uri ALL_ENTRIES_CONTENT_URI(String entryId) {
return Uri.parse(CONTENT_AUTHORITY + "/all_entries/" + entryId);
}
public static final Uri ALL_ENTRIES_CONTENT_URI = Uri.parse(CONTENT_AUTHORITY + "/all_entries");
public static Uri CONTENT_URI(String entryId) {
return Uri.parse(CONTENT_AUTHORITY + "/entries/" + entryId);
}
public static Uri CONTENT_URI(long entryId) {
return Uri.parse(CONTENT_AUTHORITY + "/entries/" + entryId);
}
public static Uri PARENT_URI(String path) {
return Uri.parse(CONTENT_AUTHORITY + path.substring(0, path.lastIndexOf('/')));
}
public static final Uri FAVORITES_CONTENT_URI = Uri.parse(CONTENT_AUTHORITY + "/favorites");
public static Uri SEARCH_URI(String search) {
return Uri.parse(CONTENT_AUTHORITY + "/entries/search/" + (TextUtils.isEmpty(search) ? " " : Uri.encode(search))); // The space is mandatory here with empty search
}
}
答案 0 :(得分：1)
也许这就是罪魁祸首：
case URI_FAVORITES: {
// .....
queryBuilder.appendWhere(new StringBuilder(FeedData.EntryColumns.IS_FAVORITE).append(Constants.DB_IS_TRUE));
break;
}
Constants.DB_IS_TRUE等于什么？
无论它是平等的，在这种情况下我认为“1”，它会被附加到“最喜欢的”列名，并产生“favorite1”。
答案 1 :(得分：0)
case URI_FAVORITES: {
// .....
queryBuilder.appendWhere(new StringBuilder(FeedData.EntryColumns.IS_FAVORITE)
.append("=") //add this line
.append(Constants.DB_IS_TRUE));
break;
}