我正在尝试访问sqlite内容以在searchview中获取建议。我无法在provider和sqlite database之间建立连接。我接受 illegalArgumentException，uknown uri。 我的代码的内容uri的确切语法是什么。
这是logCat输出：
04-27 22:52:33.122: E/AndroidRuntime(1062): FATAL EXCEPTION: main
04-27 22:52:33.122: E/AndroidRuntime(1062): android.database.sqlite.SQLiteException: near "er": syntax error: , while compiling: SELECT _id AS _id, titleid, titlename FROM titles WHERE (titlename LIKE ? er%) ORDER BY DESC
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:64)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.database.sqlite.SQLiteProgram.compileSql(SQLiteProgram.java:143)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.database.sqlite.SQLiteProgram.compileAndbindAllArgs(SQLiteProgram.java:361)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:127)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:94)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:53)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:47)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1564)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.database.sqlite.SQLiteQueryBuilder.query(SQLiteQueryBuilder.java:354)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.database.sqlite.SQLiteQueryBuilder.query(SQLiteQueryBuilder.java:291)
04-27 22:52:33.122: E/AndroidRuntime(1062): at com.example.search_deneme.SuggestionProvider.query(SuggestionProvider.java:77)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.content.ContentProvider$Transport.query(ContentProvider.java:178)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.content.ContentResolver.query(ContentResolver.java:310)
04-27 22:52:33.122: E/AndroidRuntime(1062): at com.example.search_deneme.SearchableActivity.handleIntent(SearchableActivity.java:106)
04-27 22:52:33.122: E/AndroidRuntime(1062): at com.example.search_deneme.SearchableActivity.onNewIntent(SearchableActivity.java:88)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.app.Instrumentation.callActivityOnNewIntent(Instrumentation.java:1123)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.app.ActivityThread.deliverNewIntents(ActivityThread.java:2041)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.app.ActivityThread.performNewIntents(ActivityThread.java:2054)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.app.ActivityThread.handleNewIntent(ActivityThread.java:2063)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.app.ActivityThread.access$1400(ActivityThread.java:122)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1193)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.os.Handler.dispatchMessage(Handler.java:99)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.os.Looper.loop(Looper.java:137)
04-27 22:52:33.122: E/AndroidRuntime(1062): at android.app.ActivityThread.main(ActivityThread.java:4340)
04-27 22:52:33.122: E/AndroidRuntime(1062): at java.lang.reflect.Method.invokeNative(Native Method)
04-27 22:52:33.122: E/AndroidRuntime(1062): at java.lang.reflect.Method.invoke(Method.java:511)
04-27 22:52:33.122: E/AndroidRuntime(1062): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
04-27 22:52:33.122: E/AndroidRuntime(1062): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
04-27 22:52:33.122: E/AndroidRuntime(1062): at dalvik.system.NativeStart.main(Native Method)
这是我的活动代码。谢谢。
public class SearchableActivity extends Activity implements OnQueryTextListener {
DatabaseHandler db;
String query2;
Uri mNewUri;
ContentValues mNewValues = new ContentValues();
public static final String tablePath = "titles";
public static final String AUTHORITY = "com.example.search_deneme.SuggestionProvider";
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY
+ "/" + tablePath);
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.searchlist);
db = new DatabaseHandler(this, "dbS");
db.addContact(new Titles(1,1,"erdinc"));
db.addContact(new Titles(2,1,"erf"));
db.addContact(new Titles(3,1,"erg"));
db.addContact(new Titles(4,1,"erh"));
// Get the intent, verify the action and get the query
Intent intent = getIntent();
if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
query2 = intent.getStringExtra(SearchManager.QUERY);
handleIntent(getIntent());
System.out.println(query2);
// doMySearch(query);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.search, menu);
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
SearchView searchView = (SearchView) menu.findItem(R.id.action_search)
.getActionView();
// Assumes current activity is the searchable activity
searchView.setSearchableInfo(searchManager
.getSearchableInfo(getComponentName()));
searchView.setIconifiedByDefault(true); // Do not iconify the widget;
// expand it by default
searchView.setQueryRefinementEnabled(true);
return true;
}
public boolean onSearchRequested() {
Toast.makeText(SearchableActivity.this, "deneme", Toast.LENGTH_LONG)
.show();
return super.onSearchRequested();
}
@Override
protected void onNewIntent(Intent intent) {
setIntent(intent);
handleIntent(intent);
}
private void handleIntent(Intent intent) {
if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
query2 = intent.getStringExtra(SearchManager.QUERY);
String[] mProjection = {
//CONTENT_URI.getQueryParameter("_ID"),
//CONTENT_URI.getQueryParameter("_TITLEID"),
//CONTENT_URI.getQueryParameter("_TITLENAME")
DatabaseHandler._ID + "AS _id",DatabaseHandler._TITLEID,DatabaseHandler._TITLENAME
};
String mSelectionClause = DatabaseHandler._TITLENAME + " LIKE ? " + query2 + "%";
Cursor a = getContentResolver().query(SuggestionProvider.CONTENT_URI, mProjection, mSelectionClause, null , "DESC");
//Cursor c = db.getWordMatches(query, null);
int b = a.getColumnCount();
System.out.println(a.toString() + " " + b);
//doMySearch(query);
}
}
@Override
public boolean onQueryTextSubmit(String query) {
// TODO Auto-generated method stub
System.out.println("123");
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
// TODO Auto-generated method stub
Toast.makeText(this, "text", Toast.LENGTH_LONG).show();
return false;
}
}
这是我的建议提供者类。
public class SuggestionProvider extends ContentProvider {
DatabaseHandler mOpenHelper;
private SQLiteDatabase db;
private String dbName = "dbS";
public static final int A = 1;
public static final int B = 2;
public static final int C = 3;
public static final String tablePath = "titles";
private static final String BASE_PATH = "titles";
public static final String AUTHORITY = "com.example.search_deneme.SuggestionProvider";
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY
+ "/" + BASE_PATH);
// public static final int MODE = DATABASE_MODE_QUERIES;
private static final String[] COLUMNS = {
"_id", // must include this column
SearchManager.SUGGEST_COLUMN_TEXT_1,
SearchManager.SUGGEST_COLUMN_TEXT_2, };
@Override
public boolean onCreate() {
// TODO Auto-generated method stub
mOpenHelper = new DatabaseHandler(getContext(), dbName);
return true;
}
private static final UriMatcher sURIMatcher = new UriMatcher(
UriMatcher.NO_MATCH);
static {
sURIMatcher.addURI(AUTHORITY, BASE_PATH, A);
sURIMatcher.addURI(AUTHORITY, BASE_PATH + "/#", B);
sURIMatcher.addURI(AUTHORITY, BASE_PATH + "/", C);
}
@Override
public Cursor query(Uri uri, String[] projection, String selection,
String[] selectionArgs, String sortOrder) {
SQLiteQueryBuilder queryBuilder = new SQLiteQueryBuilder();
queryBuilder.setTables(tablePath);
int uriType = sURIMatcher.match(uri);
switch (uriType) {
case B:
queryBuilder.appendWhere(mOpenHelper._ID + "="
+ uri.getLastPathSegment());
break;
case A:// no filter
break;
case C:
queryBuilder.appendWhere(mOpenHelper._TITLENAME+ "="
+ uri.getLastPathSegment());
// break;
default:
throw new IllegalArgumentException("Unknown URI" + uri);
}
Cursor cursor = queryBuilder.query(mOpenHelper.getReadableDatabase(),
projection, selection, selectionArgs, null, null, sortOrder);
cursor.setNotificationUri(getContext().getContentResolver(), uri);
return cursor;
// TODO Auto-generated method stub
}
@Override
public String getType(Uri uri) {
// TODO Auto-generated method stub
return null;
}
@Override
public Uri insert(Uri uri, ContentValues values) {
// TODO Auto-generated method stub
db = mOpenHelper.getWritableDatabase();
return null;
}
@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
// TODO Auto-generated method stub
return 0;
}
@Override
public int update(Uri uri, ContentValues values, String selection,
String[] selectionArgs) {
// TODO Auto-generated method stub
return 0;
}
}
这里我是如何创建数据库表的。
public class DatabaseHandler extends SQLiteOpenHelper {
// All Static variables
// Database Version
public static final int DATABASE_VERSION = 1;
// Database Name
public static final String DATABASE_NAME = "suggestionManager";
// Contacts table name
public static final String TABLE_SUGGESTIONS = "titles";
public static final String _ID = "_id";
public static final String _TITLEID = "titleid";
public static final String _TITLENAME = "titlename";
public DatabaseHandler(Context context, String db) {
super(context, db, null, DATABASE_VERSION);
}
// Creating TablesS
@Override
public void onCreate(SQLiteDatabase db) {
String CREATE_CONTACTS_TABLE = "CREATE TABLE IF NOT EXISTS " + TABLE_SUGGESTIONS + "("
+ _ID + " INTEGER PRIMARY KEY," + _TITLEID + " INTEGER,"
+ _TITLENAME + " TEXT" + ")";
db.execSQL(CREATE_CONTACTS_TABLE);
}
// Upgrading database
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// Drop older table if existed
db.execSQL("DROP TABLE IF EXISTS " + TABLE_SUGGESTIONS);
// Create tables again
onCreate(db);
}
/**
* All CRUD(Create, Read, Update, Delete) Operations
*/
// Adding new contact
void addContact(Titles title) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(_ID, title.getID()); // Contact Name
values.put(_TITLENAME, title.getTitleName()); // Contact Name
values.put(_TITLEID, title.getTitleID()); // Contact Phone
// Inserting Row
db.insert(TABLE_SUGGESTIONS, null, values);
db.close(); // Closing database connection
}
// Getting single contact
Titles getTitle(int id) {
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.query(TABLE_SUGGESTIONS, new String[] { _ID,
_TITLEID, _TITLENAME }, _ID + "=?",
new String[] { String.valueOf(id) }, null, null, null, null);
if (cursor != null)
cursor.moveToFirst();
Titles title = new Titles(cursor.getInt(0),
cursor.getInt(1), cursor.getString(2));
// return contact
return title;
}
// Getting All Contacts
public List<Titles> getAllContacts() {
List<Titles> contactList = new ArrayList<Titles>();
// Select All Query
String selectQuery = "SELECT * FROM " + TABLE_SUGGESTIONS;
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
Titles contact = new Titles();
contact.setID(cursor.getInt(0));
contact.setTitleID(cursor.getInt(1));
contact.setTitleName(cursor.getString(2));
// Adding contact to list
contactList.add(contact);
} while (cursor.moveToNext());
}
// return contact list
return contactList;
}
// Updating single contact
public int updateContact(Titles title) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(_TITLEID, title.getTitleID());
values.put(_TITLENAME, title.getTitleName());
// updating row
return db.update(TABLE_SUGGESTIONS, values, _ID + " = ?",
new String[] { String.valueOf(title.getID()) });
}
// Deleting single contact
public void deleteContact(Titles contact) {
SQLiteDatabase db = this.getWritableDatabase();
db.delete(TABLE_SUGGESTIONS, _ID + " = ?",
new String[] { String.valueOf(contact.getID()) });
db.close();
}
// Getting contacts Count
public int getContactsCount() {
String countQuery = "SELECT * FROM " + TABLE_SUGGESTIONS;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(countQuery, null);
cursor.close();
// return count
return cursor.getCount();
}
}
答案 0 :(得分：2)
您是否将提供者放入了清单？
<provider
android:authorities="com.yourpackagename.SuggestionsProvider"
android:name=".SuggestionsProvider" >
</provider>
你可以尝试这个：
数据库类中的重命名为：
public static final String _ID = "id"; to public static final String _ID = "_id";因为我相信_id是Android中的自定义。
你可以这样写你的投影，看看它是否也有任何区别（MYDATABASECLASS是你的数据库JAVA CLASS的名字：
String[] mProjection = { MYDATABASECLASS._ID,MYDATABASECLASS._TITLEID,MYDATABASECLASS._TITLENAME };
String mSelectionClause = MYDATABASAECLASS._TITLENAME + "LIKE ?";
并在您的数据库类中重命名为：
public static final String _ID = "id"; to public static final String _ID = "_id";因为我相信_id是Android中的自定义。
你能检查下面是否正确吗？ queryBuilder.setTables(mOpenHelper.getDatabaseName());
这不是假设你的桌名吗？ 所以尝试queryBuilder.setTables（tablePath）;