Questions tagged as 'android-studio'

Tagged questions
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Error Render problem and Failed to instantiate one or more classes

I have a problem that I can not solve for a few days. The following classes could not be instantiated: - android.support.v7.widget.ActionBarContainer (Open Class, Show Exception, Clear Cache) - android.support.v7.widget.ActionBarContextView (...
asked by 16.07.2018 / 16:02
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Android calender

I wanted to know if to spend the day the month and the year with the calender would be that way whenever I try to activate the schedule does not come right ends up activating for the same day Calendar calNoww = Calendar.getInstance();...
asked by 13.07.2018 / 20:25
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Send data from an api android using HttpURLConnection sending in json to a web service in php

I am here because I have a problem and I can not find a solution for it, I have already programmed the HttpManager class to send and receive data from my web service in php. Receiving the data I got, the problem is when sending data to the web s...
asked by 19.07.2018 / 21:42
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SQLiteOpenHelper Error (8,8)

I'm starting to program in Android and I want to make a class with a database. package josephisaac.com.wmvendas; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper; public class BancoDados extend...
asked by 19.07.2018 / 20:47
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Get the color name from the HEX value

I'm trying to make an Android application that can capture the colors, but I just figured out how can I get the HEX value, but I really need the color name! please I need an alternative that shows the name of the colors Below is all the code,...
asked by 12.07.2018 / 21:12
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How to display a directory in a fragment?

Hello. I have an activity and I have two fragments in it. In one of these fragments I would like to display a directory. I did this to create the directory that will store temporary files. File minhaPasta = new File(Environment.ge...
asked by 12.07.2018 / 06:26
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How to show the java code in an activity?

I would like to put a snippet of code inside my activity, however I have no idea how to do it, could anyone give me a tip. Thanks in advance.     
asked by 18.07.2018 / 14:49
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Use QR Code of image generated from the camera of the cell phone

Hello, I built a project in Android Studio with Barcoder to generate and then read the stored data. So far so good. I would like to know now if I can make improvements like capturing an image of a bar code from a label (for example) and us...
asked by 09.07.2018 / 17:24
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Notifications repeated every day

I'm trying to make an app that gets notifications at user-determined times every day, but I was only able to get them to arrive once. This is the code I have so far: private void salvar() { RespostasAguaCasa p = new RespostasAguaCas...
asked by 09.07.2018 / 21:54
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How do I recover the name and user of the firebase?

Hello, I'm new here and I've already had problems, kkk. Well, after several tutorials I was able to create users to my application and save email, name and password. I would now like to be able to recover after logging in, and show the nam...
asked by 04.07.2018 / 04:24