Questions tagged as 'android-studio'

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Erro: informacioncom.android.volley.ParseError: org.json.JSONException: End of input at character 0 of

I have an error when trying to make a data modification to a web-service, I retrieve the data from a dialog box and then I recover the content, the content I recover it well, it does not arrive null. the error is as follows: The meth...
asked by 03.05.2018 / 20:21
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Doubts about image routes

Inside the emulator, the path of an image appears to me:    /storage/emulated/0/Pictures/Screenshots/454980.png But with the following code: @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) {...
asked by 25.04.2018 / 00:58
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How do I modify a textview (with settext) that is in another class?

My code does not show errors but what I need is not working, what I want is: that from the Roman class we call the method ToDecimal , which is in the class RomanTodecimal , and in that method I want to modify a textview found...
asked by 24.04.2018 / 23:33
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Error trying to print "java.lang.UnsatisfiedLinkError"

I'm trying to print from my application to a printer epson of network , but I get the following error:    java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader [DexPathList [[zip file "/data/app/com.mike.pos-1/base.apk", / sys...
asked by 23.04.2018 / 20:37
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close activity settings apps from another app

The problem is that I want to restrict the access to the desistalacion of an app, when the user goes into configuration-> application-> app, mediately displays an activity requesting passwors with two buttons, check and cancel, the objective is...
asked by 25.04.2018 / 19:15
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ListView with CheckBox Together But Independent

All this is simply a ListView with a Checkbox What I want to achieve is that by pressing the first element of the list in this case is 'English' do not press the checkbox and when ONLY press the Checkbox check the box public class Main...
asked by 29.04.2018 / 21:17
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Grant multiple permissions for android Marshmallow (Android 6.0)

I go straight to the problem. I want to request multiple permissions on Android 6.0 or higher versions in Android Studio And it happens to me that even though I'm praying for you to ask everyone, just ask for the first one .. code IMPORTS...
asked by 23.04.2018 / 23:18
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how to insert data in an orderly manner? preferably down

My question is perhaps very open, to explain my problem, I have a survey project, with all the logic already created, and I already insert data in MySql, my boss asks me to insert the data in google, to which I went to the quick start that offer...
asked by 19.04.2018 / 17:56
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Why does not my fragment work in my slide menu?

Hello, I would like to know why my fragment does not work every time I press it in the sliding menu For example this is the code of my fragment: public class frg extends Fragment implements View.OnClickListener {     TextView ms, alt, to,...
asked by 19.04.2018 / 06:13
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Use progress bar on andrpod

Very good I need help, within my project there is a progress bar which when passing between activities this progress bar of the beginning will be filled with a percentage. ***** Example ***** Button day 1 "Progress bar" Complete 3 activitie...
asked by 23.04.2018 / 15:37