Merge pull request #823 from freedom0/master

#91 #150 实验5

app/src/main/java/edu/hzuapps/androidworks/homeworks/net1314080903220/RSS_listManager.java

@@ -0,0 +1,146 @@
+package edu.hzuapps.androidworks.homeworks.net1314080903220;
+
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.database.sqlite.SQLiteOpenHelper;
+
+import java.util.Calendar;
+
+
+public class RSS_listManager {
+
+	private static final String DATABASE_NAME = "RSSDB";
+	private static final int DATABASE_VERSION = 1;
+	private static final String TABLE_NAME = "RSSLIST";
+
+	private Context _context;
+	private RSSHelper rHelper;
+	private SQLiteDatabase sDatabase;
+
+	public RSS_listManager(Context ct) {
+		this._context = ct;
+	}
+
+	public class RSSHelper extends SQLiteOpenHelper {
+
+		public RSSHelper(Context context) {
+			super(context, DATABASE_NAME, null, DATABASE_VERSION);
+		}
+
+		@Override
+		public void onCreate(SQLiteDatabase db) {
+			db.execSQL("create table " + TABLE_NAME + " (" + RSS_mlist._ID
+					+ " integer primary key autoincrement," + RSS_mlist.title
+					+ " text not null," + RSS_mlist.link + " text not null,"
+					+ RSS_mlist.date + " text not null);");
+
+			ContentValues cValues = new ContentValues();
+			cValues.put(RSS_mlist.title, RSS_mlist.TITLE);
+			cValues.put(RSS_mlist.link, RSS_mlist.LINK);
+			Calendar calendar = Calendar.getInstance();
+			String date = calendar.get(Calendar.YEAR) + "Äê"
+					+ calendar.get(Calendar.MONTH) + "ÔÂ"
+
+					+ calendar.get(Calendar.HOUR_OF_DAY)
+					+ calendar.get(Calendar.MINUTE);
+			cValues.put(RSS_mlist.date, date);
+
+			db.insert(TABLE_NAME, null, cValues);
+		}
+
+		@Override
+		public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+			// TODO Auto-generated method stub
+
+		}
+
+	}
+
+
+	public boolean Open() {
+		rHelper = new RSSHelper(this._context);
+
+		return true;
+	}
+
+
+	public void Close() {
+		if (rHelper != null) {
+			rHelper.close();
+		}
+	}
+
+
+	public boolean insertDate(String title, String link) {
+		ContentValues cValues = new ContentValues();
+		cValues.put(RSS_mlist.title, title);
+		cValues.put(RSS_mlist.link, link);
+
+		Calendar calendar = Calendar.getInstance();
+		String date = calendar.get(Calendar.YEAR) + "Äê"
+				+ calendar.get(Calendar.MONTH) + "ÔÂ"
+
+				+ calendar.get(Calendar.HOUR_OF_DAY)
+				+ calendar.get(Calendar.MINUTE);
+		cValues.put(RSS_mlist.date, date);
+
+		sDatabase = rHelper.getWritableDatabase();
+		return sDatabase.insert(TABLE_NAME, null, cValues) > 0;
+
+	}
+
+
+	public boolean deleteDate(long id) {
+		sDatabase = rHelper.getWritableDatabase();
+		return sDatabase.delete(TABLE_NAME, RSS_mlist._ID + "=" + id, null) > 0;
+	}
+
+
+	public boolean updateDate(long id, String title, String link) {
+		System.out.println("YES");
+		sDatabase = rHelper.getWritableDatabase();
+		ContentValues cValues = new ContentValues();
+		cValues.put(RSS_mlist.title, title);
+		cValues.put(RSS_mlist.link, link);
+		System.out.println("NO");
+		return sDatabase.update(TABLE_NAME, cValues, RSS_mlist._ID + "=" + id,
+				null) > 0;
+	}
+
+
+	public Cursor selectDate() {
+		sDatabase = rHelper.getReadableDatabase();
+		return sDatabase.query(TABLE_NAME, new String[] { RSS_mlist._ID,
+						RSS_mlist.title, RSS_mlist.link, RSS_mlist.date }, null, null,
+				null, null, null);
+	}
+
+
+	public Cursor selectDate(long id) {
+		sDatabase = rHelper.getReadableDatabase();
+		Cursor cursor = sDatabase.query(TABLE_NAME,
+				new String[] { RSS_mlist._ID, RSS_mlist.title, RSS_mlist.link,
+						RSS_mlist.date }, RSS_mlist._ID + "=" + id, null, null,
+				null, null);
+		if (cursor != null) {
+			cursor.moveToFirst();
+		}
+		return cursor;
+	}
+
+
+	public Cursor selectDateDesc() {
+		sDatabase = rHelper.getReadableDatabase();
+		Cursor cursor = sDatabase.query(TABLE_NAME,
+				new String[] { RSS_mlist._ID, RSS_mlist.title, RSS_mlist.link,
+						RSS_mlist.date }, null, null, null,
+				null, RSS_mlist._ID+" desc");
+		if (cursor != null) {
+			cursor.moveToFirst();
+		}
+		return cursor;
+	}
+
+}