Question

使用android自带的日历控件怎么标记特定的

Answer 1

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; }}