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我在SQLite数据库中存储整数值时遇到问题。
这是我的代码。如何将EditText的整数值存储到SQLite数据库[Android]
的Create_Events.java
Button btnCreate = (Button)findViewById(R.id.saveButton);
btnCreate.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
calDB.open();
long _id;
EditText txtTitle = (EditText) findViewById(R.id.txtTitle);
String title = txtTitle.getText().toString();
EditText txtLocation = (EditText) findViewById(R.id.editText1);
String location = txtLocation.getText().toString();
EditText startTime = (EditText) findViewById(R.id.editText2);
String startTime = startTime.getText().toString();
_id = calDB.insertEvent(title, location, 0, 0);
calDB.close();
}
});
CalendarAdapter.java（数据库类）
package main.page;
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.SQLiteOpenHelper;
import android.util.Log;
public class CalendarAdapter
{
public static final String KEY_ROWID = "_id";
public static final String KEY_TITLE = "title";
public static final String KEY_LOCATION = "location";
public static final String KEY_START = "starttime";
public static final String KEY_END = "endtime";
private static final String TAG = "DBAdapter";
private static final String DATABASE_NAME = "anniversary";
private static final String DATABASE_TABLE = "calendar";
private static final int DATABASE_VERSION = 2;
private static final String DATABASE_CREATE = "create table calendar(_id integer primary key autoincrement,"+
"title text not null, location text not null, starttime integer, endtime integer);";
private final Context context;
private DatabaseHelper DBHelper;
private SQLiteDatabase db;
public CalendarAdapter(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);
}
@Override
public void onCreate(SQLiteDatabase db)
{
try
{
db.execSQL(DATABASE_CREATE);
}catch(SQLException e)
{
e.printStackTrace();
}
}
@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 calendar");
onCreate(db);
}
}
public CalendarAdapter open() throws SQLException
{
db = DBHelper.getWritableDatabase();
return this;
}
public void close()
{
DBHelper.close();
}
public long insertEvent(String title, String location, int starttime, int endtime)
{
ContentValues initialValues = new ContentValues();
initialValues.put(KEY_TITLE, title);
initialValues.put(KEY_LOCATION, location);
initialValues.put(KEY_START, starttime);
initialValues.put(KEY_END, endtime);
return db.insert(DATABASE_TABLE, null, initialValues);
}
public boolean deleteEvent(long rowId)
{
return db.delete(DATABASE_TABLE, KEY_ROWID + "=" + rowId, null) > 0;
}
public Cursor getAllEvents()
{
return db.query(DATABASE_TABLE, new String[] {KEY_ROWID, KEY_TITLE, KEY_LOCATION, KEY_START, KEY_END}, null, null, null, null, null);
}
public Cursor getEvent(long rowId) throws SQLException
{
Cursor c = db.query(true, DATABASE_TABLE, new String[] {KEY_ROWID, KEY_TITLE, KEY_LOCATION, KEY_START, KEY_END}, KEY_ROWID + "=" + rowId, null, null, null, null, null);
if(c != null)
{
c.moveToFirst();
}
return c;
}
public boolean updateEvent(long rowId, String title, String location, int starttime, int endtime)
{
ContentValues args = new ContentValues();
args.put(KEY_TITLE, title);
args.put(KEY_LOCATION, location);
args.put(KEY_START, starttime);
args.put(KEY_END, endtime);
return db.update(DATABASE_TABLE, args, KEY_ROWID + "=" + rowId, null) > 0;
}
}
正如你可以在上面看到，我已成功地从存储的EditText文本值进入我的插入代码数据库成功。所以现在我试图将启动时间（Integer）存储到数据库中。
任何帮助将不胜感激。谢谢一堆！
究竟是什么问题？看起来你总是在0开始传递'starttime'？你怎么知道它没有被存储？ – cklab 2012-08-02 03:29:30
不，我把0，因为我想测试文本值是否可以插入数据库。它被插入到数据库中，但是当我尝试从editText插入时，不能插入整数。 – CallMyName 2012-08-02 03:47:03