ここにコードとどこに障害がありますか...
package com.example.tasker;
import java.util.ArrayList;
import java.util.List;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.database.sqlite.SQLiteOpenHelper;
public class TaskerDbHelper extends SQLiteOpenHelper {
private static final int DATABASE_VERSION = 1;
// Database Name
private static final String DATABASE_NAME = "Manager";
// tasks table name
private static final String TABLE_TASKS = "tasks";
// tasks Table Columns names
private static final String KEY_ID = "id";
private static final String KEY_TASKNAME = "taskName";
private static final String KEY_STATUS = "status";
public TaskerDbHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
String sql = "CREATE TABLE IF NOT EXISTS " + TABLE_TASKS + " ( "
+ KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + KEY_TASKNAME
+ " TEXT, " + KEY_STATUS + " INTEGER)";
db.execSQL(sql);
db.close();
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldV, int newV) {
// Drop older table if existed
db.execSQL("DROP TABLE IF EXISTS " + TABLE_TASKS);
// Create tables again
onCreate(db);
}
// Adding new task
public void addTask(Task task) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_TASKNAME, task.getTaskName()); // task name
// status of task- can be 0 for not done and 1 for done
values.put(KEY_STATUS, task.getStatus());
// Inserting Row
db.insert(TABLE_TASKS, null, values);
db.close(); // Closing database connection
}
public List<Task> getAllTasks() {
List<Task> taskList = new ArrayList<Task>();
// Select All Query
String selectQuery = "SELECT * FROM " + TABLE_TASKS;
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if(cursor.getCount()>0){
Task task = new Task();
task.setId(cursor.getInt(0));
task.setTaskName(cursor.getString(1));
task.setStatus(cursor.getInt(2));
// Adding contact to list
taskList.add(task);
cursor.close();
}else {
cursor.close();
}return taskList;
}
// Task task = new Task();
// task.setId(cursor.getInt(0));
// task.setTaskName(cursor.getString(1));
// task.setStatus(cursor.getInt(2));
// Adding contact to list
// taskList.add(task);
//
// } else if (cursor.moveToNext()){
// cursor.close();
// }
// return task list
// return taskList;
public void updateTask(Task task) {
// updating row
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_TASKNAME, task.getTaskName());
values.put(KEY_STATUS, task.getStatus());
db.update(TABLE_TASKS, values, KEY_ID + " = ?",new String[] {String.valueOf(task.getId())});
db.close();
}
}`
エラー
07-17 15:49:51.889: E/AndroidRuntime(14450): 原因: java.lang.IllegalStateException: 既に閉じたオブジェクトを再度開こうとしています: SQLiteDatabase: /data/data/com.example.tasker/databases /マネジャー