sqlite データベースからレコードを選択し、単にアプリケーションに表示したかったのです。しかし、プログラムを実行するとデバッグ エラーが発生しました。 -[2013-01-18 14:39:28 - ddms] Can't bind to local 8649 for debugger and table not found error.コードをここに投稿しています。
DatabaseMain クラス:
public class DatabaseMain extends SQLiteOpenHelper{
private static String DB_PATH = "/data/data/com.ocs.employeedetails/databases/";
private static String DB_NAME = "EMPLOYEE_DB.sqlite";
private static int VERSION = 1;
private final Context mycontext;
private SQLiteDatabase sqliteDb;
public DatabaseMain(Context context) {
super(context,DB_NAME,null,VERSION);
this.mycontext = context;
}
public void createDataBase() throws IOException{
boolean databaseExist = checkDataBase();
if(databaseExist){
}else{
this.getReadableDatabase();
//this.getWritableDatabase();
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){
e.printStackTrace();
}
if(checkDB != null){
checkDB.close();
}
return checkDB != null ? true : false;
}
private void copyDataBase() throws IOException{
InputStream myInput = mycontext.getAssets().open(DB_NAME);
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);
}
myOutput.flush();
myOutput.close();
myInput.close();
}
public void openDataBase() throws SQLException{
String myPath = DB_PATH + DB_NAME;
sqliteDb = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READWRITE);
}
public Cursor queryExec(){
openDataBase();
String qry = "Select * from employee_tab";
Cursor cur = null;
cur = sqliteDb.rawQuery(qry,null);
close();
return cur;
}
@Override
public synchronized void close() {
if(sqliteDb != null)
sqliteDb.close();
super.close();
}
@Override
public void onCreate(SQLiteDatabase db) {
try {
createDataBase();
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {}
}
DatabaseMain クラスを使用している私の Activityclass :
@Override
public void onClick(View v) {
if(v.getId() == R.id.buttonOk){
Toast.makeText(getBaseContext(), "Hi ",Toast.LENGTH_SHORT).show();
try {
dm.createDataBase();
} catch (IOException e) {
e.printStackTrace();
}
dm.openDataBase();
Cursor cr = dm.queryExec();
if(cr.moveToFirst())
{
while(cr.isFirst())
{
id[0] = cr.getInt(0);
name.setText(cr.getString(1));
ph.setText(cr.getInt(2));
doj.setText(cr.getString(2));
}
}
}