我的logcat中的错误是这样的
logcat的
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): java.lang.RuntimeException: Unable to start activity ComponentInfo{one.two/one.two.Booking}: java.lang.IllegalArgumentException: column '_id' does not exist
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2268)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2284)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at android.app.ActivityThread.access$1800(ActivityThread.java:112)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1692)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at android.os.Handler.dispatchMessage(Handler.java:99)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at android.os.Looper.loop(Looper.java:123)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at android.app.ActivityThread.main(ActivityThread.java:3948)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at java.lang.reflect.Method.invokeNative(Native Method)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at java.lang.reflect.Method.invoke(Method.java:521)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:782)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at dalvik.system.NativeStart.main(Native Method)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): Caused by: java.lang.IllegalArgumentException: column '_id' does not exist
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at android.database.AbstractCursor.getColumnIndexOrThrow(AbstractCursor.java:314)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at android.widget.CursorAdapter.init(CursorAdapter.java:111)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at android.widget.CursorAdapter.<init>(CursorAdapter.java:90)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at android.widget.ResourceCursorAdapter.<init>(ResourceCursorAdapter.java:47)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at android.widget.SimpleCursorAdapter.<init>(SimpleCursorAdapter.java:85)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at one.two.Booking.onCreate(Booking.java:34)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
08-29 08:20:57.961: ERROR/AndroidRuntime(1766): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2231)
我的DBAdapter.java的一部分
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
db = new DBAdapter(this);
db.open();
setContentView(R.layout.booking);
/*long id;
id = db.insertTime(
new String("08:00")); */
Cursor spinnerCursor = db.getSpinnerData();
startManagingCursor(spinnerCursor);
Spinner colourSpinner = (Spinner) findViewById(R.id.spinner);
创建数据库
package one.two;
import java.io.IOException;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class DBAdapter
{
private static String DB_PATH = "/data/data/one.two/databases/";
private static String DB_NAME = "irsyad";
//values for the login table
public static final String KEY_ROWID = "_id";
public static final String KEY_USERNAME = "Username";
public static final String KEY_PASSWORD = "Password";
public static final String KEY_LNAME = "LastName";
public static final String KEY_FNAME ="FirstName";
public static final String KEY_ROWID2 = "_id";
public static final String KEY_STATUS = "status";
public static final String KEY_DESTINATION = "destination";
public static final String KEY_ARRIVAL = "arrival";
public static final String KEY_FERRY ="ferry";
private static final String TAG = "DBAdapter";
//declare Database name, tables names
private static final String DATABASE_NAME = "irsyad";
private static final String DATABASE_TABLE = "User";
private static final String DATABASE_TABLE_2 = "port";
private static final int DATABASE_VERSION = 1;
//declares the rules for the database tables
private static final String DATABASE_CREATE =
"create table user (_id integer primary key autoincrement, "
+ "Username text not null, Password text not null,"
+ "LastName text not null, FirstName text not null);";
private static final String DATABASE_CREATE_2 =
"create table port (_id integer primary key autoincrement, "
+ "status text null, destination text null,"
+ "arrival text null, ferry text null);";
private final Context context;
private DatabaseHelper DBHelper;
private SQLiteDatabase db;
public DBAdapter(Context ctx)
{
this.context = ctx;
DBHelper = new DatabaseHelper(context);
}
private static class DatabaseHelper extends SQLiteOpenHelper
{
DatabaseHelper(Context context)
{
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
//Create the tables with the rules we set.
@Override
public void onCreate(SQLiteDatabase db)
{
db.execSQL(DATABASE_CREATE);
db.execSQL(DATABASE_CREATE_2);
}
//OnUpgrade is only for use when u changed the database's version to 2 etc.
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion,
int newVersion)
{
Log.w(TAG, "Upgrading database from version " + oldVersion
+ " to "
+ newVersion + ", which will destroy all old data");
db.execSQL("DROP TABLE IF EXISTS port");
onCreate(db);
}
}
//---opens the database---
public DBAdapter open() throws SQLException
{
db = DBHelper.getWritableDatabase();
return this;
}
//---closes the database---
public void close()
{
DBHelper.close();
}
//Method for inserting login details, can be used in other java files when DBAdapter is
//declared in the java file. e.g. DBAdapter db = new DBAdapter(this);
public long insertUser(String Username, String Password, String LastName, String FirstName)
{
ContentValues initialValues = new ContentValues();
initialValues.put(KEY_USERNAME, Username);
initialValues.put(KEY_PASSWORD, Password);
initialValues.put(KEY_LNAME, LastName);
initialValues.put(KEY_FNAME, FirstName);
return db.insert(DATABASE_TABLE, null, initialValues);
}
/* public long insertTime(String arrival)
{
ContentValues initialValue = new ContentValues();
initialValue.put(KEY_ARRIVAL, arrival);
return db.insert(DATABASE_TABLE_2, KEY_ARRIVAL, initialValue);
}*/
//---deletes a particular title---
public boolean deleteUser(long rowId)
{
return db.delete(DATABASE_TABLE, KEY_ROWID +
"=" + rowId, null) > 0;
}
//method for retrieving all the inputs from database
public Cursor getAllUser()
{
return db.query(DATABASE_TABLE, new String[] {
KEY_ROWID,
KEY_USERNAME,
KEY_PASSWORD,
KEY_LNAME,
KEY_FNAME,},
null,
null,
null,
null,
null);
}
public Cursor getAllData()
{
return db.query(DATABASE_TABLE_2, new String[] {
KEY_ROWID2,
KEY_STATUS,
KEY_DESTINATION,
KEY_ARRIVAL,
KEY_FERRY,},
null,
null,
null,
null,
null);
}
//---retrieves a particular title---
public Cursor getUser(long rowId) throws SQLException
{
Cursor mCursor =
db.query(true, DATABASE_TABLE, new String[] {
KEY_ROWID,
KEY_USERNAME,
KEY_PASSWORD,
KEY_LNAME,
KEY_FNAME,},
KEY_ROWID + "=" + rowId,
null,
null,
null,
null,
null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
public Cursor getSpinnerData() throws SQLException
{
Cursor mCursor =
db.query(DATABASE_TABLE_2, new String[] {
KEY_ARRIVAL,},
null,
null,
null,
null,
null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
//---updates a title---
public boolean updateUser(long rowId, String Username, String Password, String LastName, String FirstName)
{
ContentValues args = new ContentValues();
args.put(KEY_USERNAME, Username);
args.put(KEY_PASSWORD, Password);
args.put(KEY_LNAME, LastName);
args.put(KEY_FNAME, FirstName);
return db.update(DATABASE_TABLE, args,
KEY_ROWID + "=" + rowId, null) > 0;
}
private boolean checkDataBase()
{
SQLiteDatabase checkDB = null;
try
{
String myPath = DB_PATH + DB_NAME;
checkDB = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READWRITE);
}
catch(SQLiteException e)
{
//database does't exist yet.
}
if(checkDB != null)
{
checkDB.close();
}
return checkDB != null ? true : false;
}
public void createDataBase() throws IOException
{
boolean dbExist = checkDataBase();
if(dbExist)
{
//do nothing - database already exist
}
else
{
db.execSQL(DATABASE_CREATE);
db.execSQL(DATABASE_CREATE_2);
}
}
}
答案 0 :(得分：17)
您在_id中执行的查询的列列表中未包含getSpinnerData()。
答案 1 :(得分：0)
您必须在表中创建一个名为_id integer alphanumeric的列。