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我试图插入数据到数据库，但它告诉我没有这样的表。我也有应用程序内的另一个SQLite数据库，我不知道这是否影响这一个，但我不这么认为。它使用相同的数据库名称，但使用不同的表名称。如果您认为它确实会影响它，请告诉我，我也会为此发布代码。 的logcat的给我这些消息：Eclipse将数据插入SQLite数据库，没有这样的表
(1) no such table: notes
Error inserting title=Bleh desc=bleh
android.database.sqlite.SQLiteException: no such table: notes (code 1): , while compiling: INSERT INTO notes(title,desc) VALUES (?,?)
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31)
at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1467)
at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1339)
at com.example.stepsaway.NoteActivity.addEntry(NoteActivity.java:102)
at com.example.stepsaway.NoteActivity.onClick(NoteActivity.java:75)
at android.view.View.performClick(View.java:4240)
at android.view.View$PerformClick.run(View.java:17721)
at android.os.Handler.handleCallback(Handler.java:730)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
的活动是java：
public class NoteActivity extends Activity implements OnClickListener {
Button buttonLeaveNote;
private EditText mTitle;
private EditText mDesc;
protected NoteDBHelper noteDB = new NoteDBHelper(NoteActivity.this);
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_note);
buttonLeaveNote = (Button) findViewById(R.id.buttonLeaveNote);
buttonLeaveNote.setOnClickListener(this);
mTitle = (EditText)findViewById(R.id.etitle);
mDesc = (EditText)findViewById(R.id.edesc);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.note, menu);
return true;
}
@Override
public void onClick(View v) {
switch(v.getId()){
case R.id.buttonLeaveNote:
String title = mTitle.getText().toString();
String desc = mDesc.getText().toString();
boolean invalid = false;
if(title.equals(""))
{
invalid = true;
Toast.makeText(getApplicationContext(), "Please enter a title", Toast.LENGTH_SHORT).show();
}
else
if(desc.equals(""))
{
invalid = true;
Toast.makeText(getApplicationContext(), "Please enter description", Toast.LENGTH_SHORT).show();
}
else
if(invalid == false)
{
addEntry(title, desc);
Intent i_note = new Intent(NoteActivity.this, JustWanderingActivity.class);
startActivity(i_note);
//finish();
}
break;
}
}
public void onDestroy()
{
super.onDestroy();
noteDB.close();
}
private void addEntry(String title, String desc)
{
SQLiteDatabase notedb = noteDB.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("title", title);
values.put("desc", desc);
//values.put("lati", lati);
//values.put("lng", lng);
try
{
long newRowId;
newRowId = notedb.insert(NoteDBHelper.DATABASE_TABLE_NAME, null, values);
Toast.makeText(getApplicationContext(), "Note successfully added", Toast.LENGTH_SHORT).show();
}
catch(Exception e)
{
e.printStackTrace();
}
}
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
}
和数据库Java是：
public class NoteDBHelper extends SQLiteOpenHelper
{
private SQLiteDatabase notedb;
public static final String NOTE_ID = "_nid";
public static final String NOTE_TITLE = "title";
public static final String NOTE_DESC = "desc";
public static final String NOTE_LAT = "lati";
public static final String NOTE_LONG = "lng";
NoteDBHelper noteDB = null;
private static final String DATABASE_NAME = "stepsaway.db";
private static final int DATABASE_VERSION = 2;
public static final String DATABASE_TABLE_NAME = "notes";
private static final String DATABASE_TABLE_CREATE =
"CREATE TABLE " + DATABASE_TABLE_NAME + "(" +
"_nid INTEGER PRIMARY KEY AUTOINCREMENT," +
"title TEXT NOT NULL, desc LONGTEXT NOT NULL);";
public NoteDBHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
System.out.println("In constructor");
}
@Override
public void onCreate(SQLiteDatabase notedb) {
try{
notedb.execSQL(DATABASE_TABLE_CREATE);
}catch(Exception e){
e.printStackTrace();
}
}
@Override
public void onUpgrade(SQLiteDatabase notedb, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
}
public Cursor rawQuery(String string, String[] strings) {
// TODO Auto-generated method stub
return null;
}
public void open() {
getWritableDatabase();
}
public Cursor getDetails(String text) throws SQLException
{
Cursor mCursor =
notedb.query(true, DATABASE_TABLE_NAME,
new String[]{NOTE_ID, NOTE_TITLE, NOTE_DESC},
NOTE_TITLE + "=" + text,
null, null, null, null, null);
if (mCursor != null)
{
mCursor.moveToFirst();
}
return mCursor;
}
}
任何帮助，将不胜感激，谢谢。
编辑：看起来问题是在相同的数据库名称内创建第二个表。它不会让我创建第二个。第一次创建数据库工作正常，但它尝试创建另一个表时，SQLite异常没有这样的表。是否需要修改或添加一些代码来创建第二个表？因为我所做的只是使用相同的DATABASE_NAME创建另一个sqlite数据库java，但使用了另一个DATABASE_TABLE_NAME。
你检查表是否创建或不 – SathishKumar
如果您已经创建了DB之前并添加表之后这可能会导致问题。表格是在第一次创建数据库时创建的。因此，从设备上卸载或清除应用程序中的数据并再次运行。 – osayilgan
@osayilgan哦哇，谢谢！这解决了这个问题（： 编辑︰我有一个新的问题，虽然我看到问题是在同一个数据库中创建第二个表，它不起作用，我有一个表注册用户，另一个表表是在这里发布的，用于创建笔记 – user2905867