我的代碼如下:
如何從資源文件夾數據庫複製到數據庫文件夾
dbhelper.java
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
if (oldVersion >= newVersion) return;
db.execSQL("DROP DATABASE IF EXISTS " + DATABASE_NAME +";");
onCreate(db);
}
@Override
public void onCreate(SQLiteDatabase db) {
//here is the database definition
db.execSQL("CREATE TABLE dhivehienglish " +
"(mv TEXT, en TEXT);");
//insert pre-configured records
db.execSQL("INSERT INTO dhivehienglish (mv, en) VALUES('ކާރު','car');");
db.execSQL("INSERT INTO dhivehienglish (mv, en) VALUES('ޖަހާ','hit');");
db.execSQL("INSERT INTO dhivehienglish (mv, en) VALUES('އިނުން','sit');");
db.execSQL("INSERT INTO dhivehienglish (mv, en) VALUES('ކެއުން','eat');");
}
}
MainActivity.java
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_carian_kamus);
//listing data processes
//-initiate the database connector
db = dbhelper.getReadableDatabase();
txtmelayu=(EditText)findViewById(R.id.txtmelayu);
btncari=(Button)findViewById(R.id.btncari);
btncari.setOnClickListener(this);
lblmakna=(TextView)findViewById(R.id.lblmakna);
}//end onCreate
public void onClick(View v){
//fetch kata melayu dr textbox
String carimelayu=txtmelayu.getText().toString();
//kena letak dalam onclick
//-run SELECT command to fetch data from table
if (v.getId()==R.id.btncari){
Cursor cmelayu=db.rawQuery("SELECT * FROM dhivehienglish " +
"WHERE mv='"+carimelayu+"';", null);
//-fetch record
if(cmelayu.getCount()!=0){
cmelayu.moveToFirst();//go to first row
String en=cmelayu.getString(1).toString();
lblmakna.setText(en);
}
else{
//display some notice here saying no data found
lblmakna.setText("Not found!");}}
}//end onCLick
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_carian_kamus, menu);
return true;
}
//when menu is selected
@Override
public boolean onOptionsItemSelected(MenuItem item) {
//call about screen, if user hit "Tentang kami" menu
if (item.getItemId()==R.id.minsert){
Intent ins= new Intent (this, InsertActivity.class);
startActivity(ins);
}
return true;
}}
如何我可以從我的資產文件夾中移動現有的數據庫,並將其用作位於本地的數據庫在我的應用程序的沙箱中?任何幫助,高度讚賞。
請檢查下面的答案,如果它解決了您的問題,那麼請接受它。 –
沒有顯示某種錯誤..數據庫沒有複製..可能是我錯誤地實現你的代碼。你可以簡單地幫助我如何把你的代碼放在dbhelper.java中 – Aroo
請檢查更新後的答案,謝謝。 –