先直接看看效果吧
初始情况
点击一个作为标记
再次点击后删除
3.这里还要感谢前辈的代码作为参考，毕竟以前也没有写过关于日历方面的东西，别人确实写得不错，我在原基础上加入了数据库操作等补充，以完成自己实际需求，作为尊重首先给出原作者的连接
就是这里–>Android自定义控件实现可多选课程日历CalendarView
4.然后贴出来关于数据库操作的代码，给大家作为参考
DatabaseHelper .java 这是关于简单数据库操作的部分
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 简化数据操作接口，避免直接操作数据库，做了再一层的封装，建议读者也这样做，可以让代码更清晰，更容易复用
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;
}
}
5.代码完整部分下面给出GitHub地址，欢迎star，水平有限，如有需要，欢迎留言讨论
这是我的github位置–https://github.com/xugongming38/EditCalendar
