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当我运行SQLite游标查询时,它无法在edittext中显示结果字符串。Android如何从SQLite光标查询获取返回值字符串并在Edittext中显示它?
它无法与logcat的消息:
java.lang.RuntimeException: Unable to start activity
android.database.CursorIndexOutOfBoundsException: Index -1 requested, with a size of 1
如何我可以从游标的查询结果值的字符串,并在EditText上显示呢?
public class Books extends Activity implements OnClickListener {
private BooksData books;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.books);
books = new BooksData(this);
}
SQLiteDatabase db1 = books.getReadableDatabase();
SEARCH_TERM = "math";
EditText edittext = (EditText) findViewById(R.id.edittext1);
// Get the value from TITLE when the TOPIC value is specified, ie such as "math".
Cursor cursor_2 = db1.query(TABLE_NAME, new String[] {"_id", "TOPIC", "TITLE"}, "TOPIC = ?", new String[]{ ""+SEARCH_TERM+"" }, null, null, null, null);
String TEMP_DATA = cursor_2.getString(2);
edittext.setText(TEMP_DATA);
books.close();
cursor_2.close();
}
dymmeh,您的解决方案效果很好!感谢您提供答案。 – user2308699 2013-04-22 22:05:03
dophie,你的解决方案效果很好!感谢您提供答案。 – user2308699 2013-04-22 22:07:05
@ user2308699 - 没问题。如果您觉得这是正确的解决方案,请务必将其标记为答案。 – dymmeh 2013-04-23 00:33:05