这工作了!我不确定发生了什么变化。我确实使用git,并且已经检查了我的提交和代码几个小时了。
如标题所示,我的uri匹配器已停止匹配。
下面,我粘贴了内容提供商的相关部分。
public class Provider extends ContentProvider {
private static final String TAG = "Provider";
private static final String SCHEME = ContentResolver.SCHEME_CONTENT;
private static final String AUTHORITY = "com.snot.bodyweightworkout.database.provider";
private static final String BASE_URI = SCHEME + AUTHORITY;
public static final Uri URI_EXERCISES = Uri.parse(BASE_URI + "/exercise");
public static final Uri URI_PROGRAMS = Uri.parse(BASE_URI + "/program");
public static final Uri URI_PROGRAM_EXERCISES = Uri.parse(BASE_URI + "/program/#/exercise");
private static final int EXERCISE = 1;
private static final int EXERCISES = 2;
private static final int PROGRAM = 3;
private static final int PROGRAMS = 4;
private static final int PROGRAM_EXERCISES = 5;
private static final UriMatcher sURIMatcher = new UriMatcher(UriMatcher.NO_MATCH);
static
{
sURIMatcher.addURI(AUTHORITY, "/exercise", EXERCISES);
sURIMatcher.addURI(AUTHORITY, "/exercise/#", EXERCISE);
sURIMatcher.addURI(AUTHORITY, "/program", PROGRAMS);
sURIMatcher.addURI(AUTHORITY, "/program/#", PROGRAM);
sURIMatcher.addURI(AUTHORITY, "/program/#/exercise", PROGRAM_EXERCISES);
}
...
然后是实际匹配的部分。
@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
Log.v(TAG, "URI: " + uri);
Cursor result = null;
int match = sURIMatcher.match(uri);
switch(match)
{
case PROGRAMS:
result = DatabaseHandler
.getInstance(getContext())
.getReadableDatabase()
.query(Program.TABLE_NAME, Program.FIELDS, null, null, null, null, null, null);
result.setNotificationUri(getContext().getContentResolver(), URI_PROGRAMS);
break;
case PROGRAM:
final long pid = Long.parseLong(uri.getLastPathSegment());
result = DatabaseHandler
.getInstance(getContext())
.getReadableDatabase()
.query(Program.TABLE_NAME, Program.FIELDS,
Program.COL_ID + " IS ?",
new String[] { String.valueOf(pid) }, null, null, null, null);
result.setNotificationUri(getContext().getContentResolver(), URI_PROGRAMS);
break;
...
default:
throw new UnsupportedOperationException("Unmatched(" + match + ") URI: " + uri.toString());
我正在尝试使用游标加载器进行查询,如下所示:
getLoaderManager().initLoader(0, null, new LoaderManager.LoaderCallbacks<Cursor>() {
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
return new CursorLoader(getActivity(), Provider.URI_PROGRAMS, Program.FIELDS, null, null, null);
}
每次都点击默认值。不匹配导致我以FC和日志中的以下行结尾。
E/AndroidRuntime( 1979): Caused by: java.lang.UnsupportedOperationException: Unmatched(-1) URI: content://com.snot.bodyweightworkout.database.provider/program
我一直在盯着这个看了几个小时,我真的需要一些新鲜的眼睛才能达到顶峰。因此,如果有一个善良的灵魂可以看一下,我将非常感激。提前致谢。
不需要启动/
,因此可以这样定义您的addUri()
方法调用:
static {
sURIMatcher.addURI(AUTHORITY, "exercise", EXERCISES);
sURIMatcher.addURI(AUTHORITY, "exercise/#", EXERCISE);
sURIMatcher.addURI(AUTHORITY, "program", PROGRAMS);
sURIMatcher.addURI(AUTHORITY, "program/#", PROGRAM);
sURIMatcher.addURI(AUTHORITY, "program/#/exercise", PROGRAM_EXERCISES);
}
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