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我已經看過所以發現許多人有這個相同的錯誤，但他們似乎忘記添加列到創建語句或缺少空白，我都不相信我做過。SQLiteException：沒有這樣的列錯誤
我的logcat如下：
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.gmd.referenceapplication, PID: 31988
android.database.sqlite.SQLiteException: no such column: QUANTITY (code 1): , while compiling: SELECT * FROM FTS WHERE (QUANTITY MATCH ?)
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:887)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:498)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37)
at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44)
at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1316)
at android.database.sqlite.SQLiteQueryBuilder.query(SQLiteQueryBuilder.java:400)
at android.database.sqlite.SQLiteQueryBuilder.query(SQLiteQueryBuilder.java:294)
at com.gmd.referenceapplication.DatabaseTable.query(DatabaseTable.java:187)
at com.gmd.referenceapplication.DatabaseTable.getWordMatches(DatabaseTable.java:179)
at com.gmd.referenceapplication.SearchableActivity$1.onQueryTextChange(SearchableActivity.java:70)
at android.support.v7.widget.SearchView.onTextChanged(SearchView.java:1150)
at android.support.v7.widget.SearchView.access$2000(SearchView.java:103)
at android.support.v7.widget.SearchView$12.onTextChanged(SearchView.java:1680)
at android.widget.TextView.sendOnTextChanged(TextView.java:7991)
at android.widget.TextView.handleTextChanged(TextView.java:8053)
at android.widget.TextView$ChangeWatcher.onTextChanged(TextView.java:10157)
at android.text.SpannableStringBuilder.sendTextChanged(SpannableStringBuilder.java:1033)
at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:559)
at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:492)
at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:491)
at android.view.inputmethod.BaseInputConnection.replaceText(BaseInputConnection.java:685)
at android.view.inputmethod.BaseInputConnection.setComposingText(BaseInputConnection.java:445)
at com.android.internal.view.IInputConnectionWrapper.executeMessage(IInputConnectionWrapper.java:340)
at com.android.internal.view.IInputConnectionWrapper$MyHandler.handleMessage(IInputConnectionWrapper.java:78)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
DatabaseTable類：
public static final String TAG = "ConstantDatabase";
//the columns included in the table
public static final String COL_QUANTITY = "QUANTITY";
public static final String COL_VALUE = "VALUE";
public static final String COL_UNCERTAINTY = "UNCERTAINTY";
public static final String COL_UNIT = "UNIT";
public static final String _id = "_id";
//name, tbale name, version
private static final String DATABASE_NAME = "CONSTANTS";
private static final String FTS_VIRTUAL_TABLE = "FTS";
private static final int DATABASE_VERSION = 1;
private final DatabaseOpenHelper mDatabaseOpenHelper;
private final Context mcontext;
public DatabaseTable(Context context){
mDatabaseOpenHelper = new DatabaseOpenHelper(context);
mcontext = context;
}
private class DatabaseOpenHelper extends SQLiteOpenHelper {
private final Context mHelperContext;
private SQLiteDatabase mDatabase;
private final MyDataProvider dp = new MyDataProvider(mcontext);
private static final String FTS_TABLE_CREATE =
"CREATE VIRTUAL TABLE " + FTS_VIRTUAL_TABLE +
" USING fts3 (" +_id+ " INTEGER PRIMARY KEY,"+
COL_QUANTITY + " TEXT, " +
COL_VALUE + " TEXT," +
COL_UNCERTAINTY + " TEXT," +
COL_UNIT + " TEXT " + ")";
public DatabaseOpenHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
loadConstants();
Log.e("Database Operation", "DatabaseOpenHelper constructor called, constants loaded?");
mHelperContext = context;
}
@Override
public void onCreate(SQLiteDatabase db) {
mDatabase = db;
mDatabase.execSQL(FTS_TABLE_CREATE);
Log.e("Database Operation", "Constants Table Created ...");
loadConstants();
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
Log.w(TAG, "Upgrading database from version " + oldVersion + " to "
+ newVersion + ", which will destroy all old data");
db.execSQL("DROP TABLE IF EXISTS " + FTS_VIRTUAL_TABLE);
onCreate(db);
}
public SQLiteDatabase getmDatabase(){
return mDatabase;
}
private void loadConstants() {
new Thread(new Runnable() {
public void run() {
try {
loadConstantss();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}).start();
Log.e("Loading", "Constants Table Populated ...");
}
private void loadConstantss() throws IOException {
HashMap map = dp.getAllMap();
Iterator<Map.Entry<String, ListViewItem>> entries = map.entrySet().iterator();
while (entries.hasNext()) {
Map.Entry<String, ListViewItem> entry = entries.next();
Log.d("thing:", entry.getKey());
//addConstant(entry.getKey(), entry.getValue(), entry.getUncertainty(), entry.getUnit());
}
}
public long addConstant(String quantity, String value, String uncertainty, String unit) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues initialValues = new ContentValues();
initialValues.put(COL_QUANTITY, quantity);
initialValues.put(COL_VALUE, value);
initialValues.put(COL_UNCERTAINTY, uncertainty);
initialValues.put(COL_UNIT, unit);
db.insert(FTS_VIRTUAL_TABLE, null, initialValues);
return db.insert(FTS_VIRTUAL_TABLE, null, initialValues);
}
//database openhelper ends
}
public Cursor getWordMatches(String query, String[] columns) {
String selection = COL_QUANTITY + " MATCH ?";
String[] selectionArgs = new String[] {query+"*"};
return query(selection, selectionArgs, columns);
}
public Cursor query(String selection, String[] selectionArgs, String[] columns) {
SQLiteQueryBuilder builder = new SQLiteQueryBuilder();
builder.setTables(FTS_VIRTUAL_TABLE);
Cursor cursor = builder.query(mDatabaseOpenHelper.getReadableDatabase(),
columns, selection, selectionArgs, null, null, null);
if (cursor == null) {
return null;
} else if (!cursor.moveToFirst()) {
cursor.close();
return null;
}
return cursor;
}
public Cursor getAllTitles(){
return mDatabaseOpenHelper.getmDatabase().query(FTS_VIRTUAL_TABLE, new String[] {
COL_QUANTITY,
COL_UNCERTAINTY,
COL_UNIT,
COL_VALUE},
null,
null,
null,
null,
null);
}
謝謝你的人誰可以告訴我爲什麼告訴我列「數量」不被創建，我真的不知道。
您最近是否添加了該列？如果是這樣的話，你必須更新DATABASE版本以強制「更新」並添加該列......另一個選項是卸載你的應用並重新安裝（或者只是刪除它的數據） – W0rmH0le
如果我只是運行它的Android Studio，不應該自動發生？ – grassss
如果之前運行並在以後添加該柱，那麼不......這就是爲什麼存在onUpgrade（）方法...稍後添加列......但由於您正在調試，它更容易卸載並安裝應用程序aggain – W0rmH0le