Questions tagged as 'android'

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Problems using camera, generate, edit and save image [duplicate]

I'm trying to create an app, and part of it is using the camera to take a picture, which will automatically be shortened and saved in folders separated by year / month / imgHora.jpg. For older versions the code worked, but for newer version...
asked by 28.10.2018 / 22:31
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NoClassDefFoundError when deploying Espresso IdlingResource

I need to tell [Espresso] [1] to wait until my Activity is idle. For this I am using the IdlingResource interface. This is all my Activity code: public class MyActivity extends Activity implements IdlingResource { private b...
asked by 20.08.2014 / 15:19
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Open a directory

I'm developing an application that when I click on a button it exports all my database to an excel file, this file is inside a folder created by the application itself, this created folder is in the internal memory of the device. My question is,...
asked by 06.06.2018 / 13:14
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How to decode a JSON Array on Android

There was a need to decode a JSON Array like this: output: [ [{ }, { }], [{ }, { }] ] I was doing this in a way that decoded a Array like this: output: [{ }, { }, { }] Code of how you were doing: Meth...
asked by 09.09.2014 / 15:06
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How to create an emulator without using ide?

I need to emulate android on my machine, but I did not want to use a virtual machine because it would use a lot of features, I wanted to use android studio's sdk tools, but I also did not want to install android studio for that. So I downloade...
asked by 18.09.2017 / 20:56
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How to display equations in Android?

Does anyone know how to display mathematical equations in Android applications? There is something like Latex, where I put $f(x) = \frac{x^3}{\sqr{x}}$ and it shows in TexView: Does anyone know if there is a native form of And...
asked by 28.09.2017 / 21:43
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2 decimal place using double [duplicate]

I'm learning to program, I'm doing an application with 3 edittext (where I enter the numbers I want to calculate) and a textview to display the result. I would like to know how to calculate 2 numbers with option to be able to fill the third ed...
asked by 21.09.2017 / 12:14
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Error performing insert in an Android application: "Empty bindArgs"

Explanation: I have an android application that was made using ADT (Android Developer Tools) I use the bank sqlite in it and eventually I perform some operations as insert or update and also some select 's. Pr...
asked by 18.02.2014 / 00:23
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What are the differences between MERGE and INCLUDE?

I often work with INCLUDE, but I never understood the MERGE. What are its uses and advantages?     
asked by 05.03.2014 / 21:35
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How to Turn Wi-Fi on / off on Android?

How do I turn on and off Wifi on Android? I would like to turn the signal on every time the person opens the application, and turn it off the moment they close.     
asked by 05.03.2014 / 03:10