我尝试将数据插入到我的 sqlite 表中，但插入时遇到问题
我的错误日志
02-12 10:55:47.927: V/aaaa(1273): zaza
02-12 10:55:47.927: I/Database(1273): sqlite returned: error code = 1, msg = no such table: users
02-12 10:55:47.957: E/Database(1273): Error inserting username=zaza
02-12 10:55:47.957: E/Database(1273): android.database.sqlite.SQLiteException: no such table: users: , while compiling: INSERT INTO users(username) VALUES(?);
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method)
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:92)
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:65)
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:83)
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:41)
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteDatabase.compileStatement(SQLiteDatabase.java:1149)
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1569)
02-12 10:55:47.957: E/Database(1273): at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1426)
02-12 10:55:47.957: E/Database(1273): at com.example.database.DatabaseMain$1$1.onClick(DatabaseMain.java:63)
02-12 10:55:47.957: E/Database(1273): at com.android.internal.app.AlertController$ButtonHandler.handleMessage(AlertController.java:159)
02-12 10:55:47.957: E/Database(1273): at android.os.Handler.dispatchMessage(Handler.java:99)
02-12 10:55:47.957: E/Database(1273): at android.os.Looper.loop(Looper.java:123)
02-12 10:55:47.957: E/Database(1273): at android.app.ActivityThread.main(ActivityThread.java:3683)
02-12 10:55:47.957: E/Database(1273): at java.lang.reflect.Method.invokeNative(Native Method)
02-12 10:55:47.957: E/Database(1273): at java.lang.reflect.Method.invoke(Method.java:507)
02-12 10:55:47.957: E/Database(1273): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
02-12 10:55:47.957: E/Database(1273): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
02-12 10:55:47.957: E/Database(1273): at dalvik.system.NativeStart.main(Native Method)
我正在插入使用带有edittext的自定义对话框，我显示的editttextlog.v是显示
但为什么不能插入我的数据？
我的代码
public class DatabaseMain extends Activity {
private DataBaseHelper dbHelper;
SQLiteDatabase db;
//private CursorAdapter dataSource;
//put the table name and column in constants
public static final String TABLE_NAME = "users";
public static final String COLUMN_NAME = "username";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_database_main);
dbHelper = new DataBaseHelper (this);
//dbHelper.openDataBase();
db = dbHelper.getWritableDatabase();
ListView listdata= (ListView)findViewById(R.id.listView1);
Button btn = (Button)findViewById(R.id.button1);
btn.setOnClickListener(new View.OnClickListener() {
ContentValues values = new ContentValues();
public void onClick(View v) {
LayoutInflater inflater = DatabaseMain.this.getLayoutInflater();
final View v1 =inflater.inflate(R.layout.username , null) ;
new AlertDialog.Builder(DatabaseMain.this)
.setTitle("input your name:")
.setView(v1)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dlg, int sumthin) {
EditText name = (EditText)v1.findViewById(R.id.name);
String your_name = name.getText().toString();
values.put(COLUMN_NAME,name);
db.insert(TABLE_NAME,null,values);
}
})
.show();
}
});
}
}
我正在使用文件中的数据库然后我放入文件夹资产然后我用这段代码复制
public class DataBaseHelper extends SQLiteOpenHelper{
private static String DB_PATH = "/data/data/com.example/databases/";
private static String DB_NAME = "MyDb";
private SQLiteDatabase myDataBase;
private final Context myContext;
private static DataBaseHelper sInstance = null;
public DataBaseHelper(Context context) {
super(context, DB_NAME, null, 1);
this.myContext = context;
}
public void createDataBase() throws IOException{
boolean dbExist = checkDataBase();
if(dbExist){
//do nothing - database already exist
}else{
this.getReadableDatabase();
try {
copyDataBase();
} catch (IOException e) {
throw new Error("Error copying database");
}
}
}
private boolean checkDataBase(){
SQLiteDatabase checkDB = null;
try{
String myPath = DB_PATH + DB_NAME;
checkDB = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY);
}catch(SQLiteException e){
//database does't exist yet.
}
if(checkDB != null){
checkDB.close();
}
return checkDB != null ? true : false;
}
private void copyDataBase() throws IOException{
//Open your local db as the input stream
InputStream myInput = myContext.getAssets().open(DB_NAME);
// Path to the just created empty db
String outFileName = DB_PATH + DB_NAME;
OutputStream myOutput = new FileOutputStream(outFileName);
byte[] buffer = new byte[1024];
int length;
while ((length = myInput.read(buffer))>0){
myOutput.write(buffer, 0, length);
}
//Close the streams
myOutput.flush();
myOutput.close();
myInput.close();
}
public void openDataBase() throws SQLException{
String myPath = DB_PATH + DB_NAME;
myDataBase = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY);
}
public Cursor select(String query) throws SQLException {
return myDataBase.rawQuery(query, null);
}
public void insert(String table, ContentValues values) throws SQLException {
myDataBase.insert(table, null, values);
}
public void delete(String table, String where) throws SQLException {
myDataBase.delete(table, where, null);
}
public void update(String table, ContentValues values, String where) {
myDataBase.update(table, values, where, null);
}
public void sqlCommand(String command) {
myDataBase.execSQL(command);
}
@Override
public synchronized void close() {
if(myDataBase != null)
myDataBase.close();
super.close();
}
@Override
public void onCreate(SQLiteDatabase db) {
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
public static DataBaseHelper instance() {
/*
if (sInstance == null) {
sInstance = new DataBaseHelper();
}
*/
return sInstance;
}
}