All Questions

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How to create a txt in android sdk 22 lolipop that is accessible from file explorer

My program allows me to save and retrieve a document, but it is saved in a directory that can only be accessed if I have the phone rooted. How do I store it in an accessible directory such as Documents? I want to implement it for phones wi...
asked on 05.04.2018 / 14:47
2
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Miscellaneous Input-Group online Boostrap 4

Good morning! I tell you .. I am new using Bootstrap 4 and I am trying, within a form, to put several input of the input-group class in the same row. I'm trying the following: <div class="row"> <label for="uno">Pri...
asked on 04.04.2018 / 13:51
1
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Problem when concatenating a variable with javascript text

In the function cv () a string is stored in the variable send (global variable) and I have problems so that it is concatenated within the letters.forEach () function, does anyone know why? var tablero = document.getElementById('tablero'); var...
asked on 31.03.2018 / 03:28
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problems with the primary key

good morning classmates I have an issue, what happens is that I am doing a database for my project in MySQL but I have a problem, in the requested tables and arealogistica in this area I have a single worker or person in charge of this area a...
asked on 30.03.2018 / 21:10
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Problem with SQLite query

the query I want to make is about the selection of a song with certain specifications, to make a playlist, it is generated as the songs are played, the query is something like selecting the next song. In the table I have a logical data like, "re...
asked on 20.11.2017 / 12:34
1
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ASP.net pass onclick values to another page

On the first aspx page I have 2 buttons with difficulty for my game (normal and difficult) <div class="modal-body"> <asp:ImageButton id="normal" ImageUrl="~/images/flecha_atras.png" class="flechaAtras" onclick="normal_Click"...
asked on 05.04.2018 / 17:04
2
answers

Avoid a concurrent insert

I have a problem on my website. It turns out that I have a packs table which has a availability column. A pack will be available as long as the availability is > 0 . A user can reserve an available pack, upon payment with Stripe. This...
asked on 03.04.2018 / 21:09
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fix the date of the previous day at 00:00 hours

I need to get MySQL the date of the previous day at 00:00 hours. For example if today is 21/11/2017 11:57:00 , the resulting date should be% 20/11/2017 0:00:00.000 . In sybase I take it out this way SELECT dateadd (dd, 0,conv...
asked on 21.11.2017 / 11:18
3
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Validation of rout in java

This is the exercise: Create a Program that allows you to enter a person's Rut and show: If the Rut is valid or not, if it is not valid, allow it to be re-entered, you only have 3 chances to make a mistake, after 3 times the program ends with...
asked on 17.11.2017 / 00:23
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Determine Error with my android app on Google Playstore

I have developed an android app that is currently in production, in the Google Play Store. The problem is that sometimes the window is closed and the message that my app has stopped is displayed. It does not always happen, other times I open...
asked on 24.11.2017 / 08:31