Android自定義可標記日曆
阿新 • • 發佈:2019-01-23
1.前幾天某某人要求我記住她什麼時候洗的頭髮,然後記得提醒她,這麼複雜的事情,我只好想著做個什麼東西幫我,然後就這樣了
2.先直接看看效果吧
初始情況
點選一個作為標記
再次點選後刪除
3.這裡還要感謝前輩的程式碼作為參考,畢竟以前也沒有寫過關於日曆方面的東西,別人確實寫得不錯,我在原基礎上加入了資料庫操作等補充,以完成自己實際需求,作為尊重首先給出原作者的連線
4.然後貼出來關於資料庫操作的程式碼,給大家作為參考
DatabaseHelper .java 這是關於簡單資料庫操作的部分
package com.xugongming38.editcalendar.utils;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
/**
* Created by dell on 2017/5/18.
*/
public class DatabaseHelper extends SQLiteOpenHelper {
public static final String CREATE_DIARY = "create table Hair("
+ "id integer primary key autoincrement, "
+ "content text)";
private Context mContext;
public DatabaseHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version){
super(context, name, factory, version);
mContext = context;
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(CREATE_DIARY);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("drop table if exists Hair");
onCreate(db);
}
}
DataHelper .java 簡化資料操作介面,避免直接操作資料庫,做了再一層的封裝,建議讀者也這樣做,可以讓程式碼更清晰,更容易複用
package com.xugongming38.editcalendar.utils;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import java.util.ArrayList;
import java.util.List;
/**
* Created by dell on 2017/5/18.
*/
public class DataHelper {
public static DatabaseHelper mHelper;
public static void deleteData2List(String content) {
SQLiteDatabase dbDelete = mHelper.getWritableDatabase();
dbDelete.delete("Hair", "content = ?", new String[]{content});
}
public static void addData2List(String content) {
SQLiteDatabase db = mHelper.getWritableDatabase();
ContentValues values = new ContentValues();
values.put("content", content);
db.insert("Hair", null, values);
values.clear();
}
public static List<String> getDataList(Context context) {
if(mHelper==null){
mHelper = new DatabaseHelper(context, "Hair.db", null, 1);
}
List<String> dataList = new ArrayList<>();
SQLiteDatabase sqLiteDatabase = mHelper.getWritableDatabase();
Cursor cursor = sqLiteDatabase.query("Hair", null, null, null, null, null, null);
if (cursor.moveToFirst()) {
do {
String content = cursor.getString(cursor.getColumnIndex("content"));
dataList.add(content);
} while (cursor.moveToNext());
}
cursor.close();
return dataList;
}
}