[英]Error with taking spinner data from database
Booking.java Booking.java
package one.two;
import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.SimpleCursorAdapter;
import android.widget.Spinner;
public class Booking extends Activity
{
private DBAdapter db;
private Spinner colourSpinner;
private String txtArrival;
/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
db = new DBAdapter(this);
db.open();
setContentView(R.layout.booking);
Cursor c = db.getSpinnerData();
startManagingCursor(c);
String[] from = new String[]{DBAdapter.KEY_ARRIVAL};
int[] to = new int[]{R.id.txtArrival};
SimpleCursorAdapter adapter =
new SimpleCursorAdapter(this, android.R.layout.simple_spinner_item, c, from, to );
adapter.setDropDownViewResource( android.R.layout.simple_spinner_dropdown_item );
Spinner colourSpinner = (Spinner) findViewById(R.id.myspinner);
colourSpinner.setAdapter(adapter);
}
Where would i declare my {KEY_ARRIVAL} as i already have my KEY_ARRIVAL declared in my DBAdapter.java. 我将在哪里声明我的{KEY_ARRIVAL},因为我已经在DBAdapter.java中声明了我的KEY_ARRIVAL。 But there is an error stating KEY_ARRIVAL cannot be resolved? 但是出现错误,指出KEY_ARRIVAL无法解决?
Are you saying you have a string KEY_ARRIVAL
defined in DBAdapter? 您是说您在KEY_ARRIVAL
定义了一个字符串KEY_ARRIVAL吗? Make it public static final
, and you can access it via DBAdapter.KEY_ARRIVAL
. 将其设为public static final
,您可以通过DBAdapter.KEY_ARRIVAL
访问它。
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