Posts by Ana Waldila • 119 points
13 posts
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2
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answers108
viewsQ: Display derivative expression in Visual Basic
I am using the package "Extreme Optimization" to learn how to use calculus and mathematically more advanced programs using the VB language. However, I need help saving the program in memory and…
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answers76
viewsQ: Graph does not appear on the mobile screen
In the development of an application, I am filling a chart as the end result of user data entries. The main point is that, as I will present in the following code, I have a FOR that will fill each…
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answer175
viewsQ: Send Activity parameters to a calculation class
I’ve had a question for a while, I posted it here once, but it hasn’t been solved. I would like to pass a parameter from an Activty to a calculus class (this class does not have Activity , it is…
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answers32
viewsQ: Graphviewdata is not recognized
Next. I’m trying to import Graphviewdata in the project, but Android doesn’t recognize it. This occurs even though I have imported the entire Graphview library and it is working…
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answer948
viewsQ: have you declared this Activity in your Androidmanifest.xml?
Hello, I created a Data Input Activity and another one of "Result", when the button event is activated, to perform the calculations and open the Result Activity, the error appears that it was not…
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answers69
viewsQ: Import Hellocharts library to Android Studio
My question is the following. I am trying to import a library so I can program charts (line charts, bar etc) in app. I’m using the site as a base: https://github.com/lecho/hellocharts-android I…
android-studioasked Ana Waldila 119 -
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answer50
viewsQ: Stackoverflowerror when using a method
Next, I’m in the development of an app. In it there are two calculation methods, where in the data entry the user chooses the method and inserts the data. One of these methods is working perfectly.…
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answer547
viewsQ: call requires api level 24 (Current min is 16): android.icu.text.Decimalformat#Decimalformat
I was trying to format the output numbering of the calculus data in the textview to two decimal places. I found Decimalformat code, however it didn’t work with me. I’ve been to Gradle and changed…
android-studioasked Ana Waldila 119 -
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answer5726
viewsQ: Change the project API
I’m with an app in android studio practically ready, only I wanted to change from API 9 to API 16 (Android 4.0). Can anyone explain? Thank you!
android-studioasked Ana Waldila 119 -
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answers90
viewsQ: Public with 2 variables does not return value
I have 3 publics that should return a calculation value for me to present on the Activity screen. The first, volume_agua_mehta(), returns normally, but the second, massa_brita_mehta(), and the…
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answers313
viewsQ: Passing parameters from an Activity to a calculation class
I would like you to help me in a situation that I am doing in my project, but that somehow the app to by clicking on the calculate button. I’ll give you a simple example to get a sense of more or…
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answer78
viewsQ: Code does not read ELSE
Speak people, I’m a beginner in Android and I would like you to take me without a doubt. I am making an app for the user to complete all Edittext’s so that the program can perform the proper…
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answers169
viewsQ: False positive on . exe from visual basic software
I’m new to the forum, so I’m sorry if I’m repeating a topic (I researched it actually and I couldn’t find anything that looked like the problem I’m having). Anyway, I’ll explain what’s going on: I…