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我正在尝试访问sqlite内容以在searchview中采取建议。我无法建立提供商和sqlite数据库之间的连接。我采取illegalArgumentException，uknown uri。 什么是我的代码的内容uri的确切语法。内容提供者未知uri

这是logcat的输出：

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)

这里是我的活动code.Thanks。

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; 
}

}

这里我如何创建我的数据库表。

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(); 
}

}

来源

2013-04-27 erdel

你把供应商在你的清单？

<provider 

    android:authorities="com.yourpackagename.SuggestionsProvider" 

    android:name=".SuggestionsProvider" > 

</provider>

你能试试这个：

在你的数据库类重命名此：我相信_id是在Android的定制 public static final String _ID = "id"; to public static final String _ID = "_id";。

，你可以写你的投影像这样，看看它是否有什么差别，以及（其中MYDATABASECLASS是数据库JAVA类的名称：

String[] mProjection = { MYDATABASECLASS._ID,MYDATABASECLASS._TITLEID,MYDATABASECLASS._TITLENAME }; 

String mSelectionClause = MYDATABASAECLASS._TITLENAME + "LIKE ?";

，并在你的数据库类重命名此：

public static final String _ID = "id"; to public static final String _ID = "_id";因为我相信_id是Android的一个习俗。

您可以检查是否下面是正确的呢？queryBuilder.setTables(mOpenHelper.getDatabaseName());

是不是应该成为你的餐桌名称？所以试试queryBuilder.setTables（tablePath）;

来源

2013-04-27 16:20:02 j2emanue

感谢您的回复。是的，我把提供者显示出来。 – erdel 2013-04-27 16:36:24

我的确像你一样。然后我意识到我没有从数据库中获取id，titleid和titlename列。在我把它们从数据库类中取出后，我在日志屏幕上看到它们。但是现在，sql命令无法正常工作。这是日志结果。 “sql异常接近”？“，编译时选择_id，_titleid，_titlename从dbs WHERE（1 = titles）AND（titlenameLIKE）ORDER BY DESC语法错误”...它取数据库名称而不是表名称。我不知道它会使用数据库类而不是内容提供者。再次感谢。 – erdel 2013-04-27 19:52:30

你是对的。我改变了setTables方法，它工作。我在这个过程中的代码有很多变化。我已经更新了这个问题。如果你看最后一个，我将不胜感激。 – erdel 2013-04-27 22:13:13

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