电量记录出问题了,数据跑到了17万条,绘制电量曲线新手机都要几秒钟!
这样应该没问题了:
public void insert(ContentValues values) {
SQLiteDatabase db = getWritableDatabase();
db.insert(TableName, null, values);
db.execSQL("delete from battery where _id not in (select _id from battery order by _id desc limit 0,20000)");
db.close();
}