Questions tagged as 'android'

Tagged questions
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How can I go through this JSON and retrieve the Movies list?

I'm having trouble traversing this JSON and extracting data from the Array "movies". Follow JSON: ( link ) The error is this:    java.lang.NullPointerException on for (Movies m: catalogoMovies.movies) Here's a snippet of code: Ret...
asked by 17.08.2017 / 06:22
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How to use only the Android Studio Interface Editor?

I program for Android with Xamarin on Visual Studio , but I do not short anything its design editor, how can I use only the Android Studio editor when I need it? I changed the design extension from .axml to ....
asked by 03.11.2017 / 22:42
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Set textview default color on Android

I have a custom TextView, it currently directs the color of the text to white, however, I wanted this to be the default color, that is, to be chosen white if no color is set with textColor in xml, how to do this ? xml: (I tried to set textCol...
asked by 20.08.2017 / 04:10
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You uploaded an APK with an invalid signature

I put my apk on the console and gave this error.    Upload failed You uploaded an APK with an invalid signature. Aparsigner error: ERROR: JAR_SIG_NO_SIGNATURES: No JAR signatures I use ide android studio, I signed the apk but it contains...
asked by 20.08.2017 / 19:56
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How to do Json readings with multiple lists (DELPHI)?

I'm using the XSUPEROBJET examples to read Json below, but the examples use simple Json structures, and they work, but when I try to read the structures with multiple lists they do not work. I do not know what I'm doing wrong. My problem i...
asked by 12.09.2017 / 20:47
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Model receive context in Android MVP

I have a sqlite database, to use precise context, however, sending the context to the presenter and then pro model would be a violation of MVP, since it is part of the view, it is part of Android. How would I use context without violating MVP?...
asked by 27.09.2017 / 22:28
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Android - TextView Hyperlink to another Activity

Is there any way to format a TextView so that one of your words is a HyperLink for another app's Activity? In case it is a kind of Dictionary, where in the explanation of the word can have another word that is also registered, and clicking on...
asked by 29.09.2017 / 21:50
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APK protection against disassembly and others

I would like to know how to protect the code from a APK Android , because if we extract, we have the templates, if you use certain programs, we have practically all classes . What forms do you know to protect against this? I wo...
asked by 02.10.2017 / 20:14
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How to restart an Activity?

I want to restart my activity without the help of buttons, I want it to restart automatically in a while. How do I do this?     
asked by 15.08.2017 / 07:27
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Sum in TextView

I have a Json that returns the positive and negative values, and set the text in my TextView . This is the calculation I try to do, but it returns an error of invalid double : public double num1,num2,resultado; saldo = (TextView)...
asked by 27.07.2017 / 16:06