Questions tagged as 'android'

Tagged questions
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How to return more than one value using an asyncTask in android?

In short, my class that extends an AsyncTask, downloads a series of data of type byte, then I need to perform some calculations with that data, and finally return all these values to my MainActivity. The code is summarized as follows: class...
asked by 22.06.2015 / 13:32
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How can I make a variable wait for the user to press 1 of 4 buttons?

Well, I'll try to be clearer. I have a variable called int tentativa and I want it to get a specific value depending on which button the user presses. The buttons are btPedra[0], btPedra[1], btPedra[2], btPedra[3] . If the...
asked by 12.06.2015 / 05:00
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How to read a Json without knowing what's inside it or the amount of data?

I am developing a dynamic form for Android in which you receive a Json file and create the forms. It's all automated, except for the part that I have to get a string in Json's hand. Is there a way to read the string without naming it within ....
asked by 16.06.2015 / 23:16
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Android ProgressDialog does not appear

I'm trying to show a ProgressDialog in the process of downloading a binary file, however it does not appear, and I do not get any error as well. Briefly explain how I have structured code In my MainActivity I define a button to get this file...
asked by 25.06.2015 / 14:36
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Is it possible to export the source code of an Android Studio project? As?

I've developed an application in Android Studio that is already available on Google Play. As it was a project that I used as the subject of my TCC, the university needs the source code in PDF. How do I extract the code into a single file?...
asked by 18.09.2017 / 19:17
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How to associate / open mp3 files in raw folder?

I am with probremas with songs, whenever I add some music and I will execute some code of the error, whenever I click on the music in the raw folder a text appears, in tutorials I saw the person clicks on the song and plays it I will show photos...
asked by 22.10.2017 / 23:27
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Error inserting PHP MySql data using the Android volley lib

I'm developing an application that will have to send data to a server. My php source code is this: connection.php <?php $mysql_hostname = "localhost"; $mysql_user = "root"; $mysql_password = ""; $mysql_database = "ap...
asked by 30.10.2015 / 20:55
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Programming for Android with multiple screens

When I program to Android , I think of portability with the most diverse devices on the market. Seeing the layout of my Activity principal , I noticed that on small-screen devices (I did the 2-inch screen test) the views are HUGE...
asked by 06.06.2015 / 01:49
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How to prevent AlertDialog from being closed when any button is clicked?

Problem I'm trying to validate certain data contained in a% custom View in the event of clicking the Save button. So after the validation I save the data and close the AlertDialog, and in case the data is not valid I would show the e...
asked by 08.05.2015 / 22:49
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Doubt with scenes (Scene)

I'm starting to use scenes in my application, and I'm constantly having the same problem, but now I did not know how to solve. So, I have 2 scenes, and in onCreate I get my views, for example: editText = (EditText) findViewById(R.id....
asked by 01.10.2016 / 19:15