Questions tagged as 'android'

Tagged questions
2
answers

Adding new fields dynamically

I'm creating an app that calculates credits from a school report. DUVIDA : How to add a new EditText when the user clicks the next "+" button and sums the values of each EditText .     
asked by 11.09.2016 / 05:17
0
answers

How to generate a list with data from an Android Checkbox?

I'm developing an Android app for pizzeria that generates a list of checked CheckBox ingredients, that is, the user gives a "check" on the items they want for their pizza like catupiry, calabresa, onion, etc., and so on. the list is mounted....
asked by 19.10.2016 / 02:11
1
answer

Working with images in Android Studio

I wonder if there is a way to work with images on android. I have a List View, in this list I have several categories. When the user selects this category, I would like to load all images related to this category. But I do not know how to do thi...
asked by 19.10.2016 / 20:22
0
answers

Why should I use a LinearLayout inside another LinearLayout?

I do not understand this example: <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" > <LinearLayout android:layout_widt...
asked by 28.11.2016 / 05:15
2
answers

Random button with isEmpty ();

Hello, I'm new to programming with Java and now a little Android. I am trying to use Random to issue random messages if nothing is typed. So, my code looks like this: public class MainActivity extends AppCompatActivity { private EditTe...
asked by 25.11.2016 / 16:37
0
answers

Error: Execution failed for task ': app: preDexDebug'. finished with non-zero exit value 1

I'm trying to run the Android Studio compiler, but I get this error back. Error:Execution failed for task ':app:preDexDebug'. > finished with non-zero exit value 1 build.grad app: android { compileSdkVersion 23 buildToolsVersion...
asked by 05.11.2016 / 15:12
1
answer

Pass CSV content to an SQLite table

I have a CSV file with student records. I would like to upload these records to a aluno table in SQLite. How can I perform this operation?     
asked by 16.11.2016 / 21:37
0
answers

Is there any framework for android? [closed]

I would like to find an framework for Android similar to Bootstrap used in the layout of web pages, is there any? Which one is the best?     
asked by 08.10.2016 / 16:04
0
answers

Debug problem [closed]

I was using the Android emulator to test my apps, but it is very slow, I started to use my smartphone, but realized that many times the application is not updated. To resolve, I uninstall the application and run the application again. Would a be...
asked by 02.10.2016 / 15:06
0
answers

Detect dot on screen with device camera

Does anyone know of any library or practice to detect a point in the image captured with the device's camera? Eg a white paper with a black dot, then the camera detects this point and gives the coordinates of the screen (X and Y).     
asked by 14.09.2016 / 21:35