Questions tagged as 'android'

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Firebase - Android. Subtract stock from a shopping cart

I'm developing a product store with shopping cart and blah blah, typical. However, I have a very strange drama hahaha. The drama has to do with the fact that, when buying a certain amount of products, it is obvious that the quantity purchased is...
asked by 08.12.2018 / 18:42
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Help I can not convert a string with JSON format to JSONArray on android

Hi, I'm new to android studio I'm trying to convert us string with json format into a JSONArray object in android studio but I have the following error:    W / System.err: org.json.JSONException: Value [{"cve_prod": "ASPM1   "," description...
asked by 04.12.2018 / 19:07
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send data from a fragment to an activity

I have a problem ... when I click on the item (which is inside a fragment) it directs me to an activity but I only get the data of the "title" ... the "image" and "place" comes out empty public void onStart() { super.onStart(); op...
asked by 04.12.2018 / 04:01
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Webview does not show content on some devices

Good morning, I would like to ask for a bit of help regarding an issue that I have in an app that implements a WebView and in some devices perfectly loads the web app and in others it does not, this is presented mostly try to show some im...
asked by 30.11.2018 / 17:59
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Error with android.graphics.Paint

I'm starting with Android and its IDE. I'm following a slightly outdated manual but that most of the things it describes are valid. Then with the description of this error that AndroidStudio gives me, I can not find out the reason for the failur...
asked by 23.12.2018 / 17:50
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Problems with screen refresh using the TVertScrollBox component

I'm making an application where you have a Form that shows configuration data, it has a lot of fields, I use TEdit and TCheckBox , put in TFramedVertScrollBox . I've also tried it with TVertScrollBox . The prob...
asked by 24.12.2018 / 08:56
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react-native-maps does not work on Android

I'm trying to use react-native-maps ( link ) on an Android device compiling the example but the application It closes when I select an example, because I guess it does not get properly access Google maps. If I try from the emulator the map is no...
asked by 22.03.2016 / 18:36
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Problem, "My application has stopped" - "SQLiteException: no such table"

I have created an App to consult the address of a person by placing its name in an EditText, for the database I used the BD Browser program for SQlite, create a folder called assets and place the .db file there. The application opens in the emul...
asked by 13.12.2018 / 21:02
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ClassCastException error on Android

When running the following line on android: recyclerView.getChildAdapterPosition(view); Skip the following Exception: java.lang.ClassCastException: android.widget.RelativeLayout$LayoutParams cannot be cast to android.support.v7.widget.Rec...
asked by 24.11.2018 / 17:52
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good night, help with JSONArray and JSONObject

I have the following code in a PHP $json=array(); if(isset($_GET["address"])){ $documento=$_GET["address"]; $conexion = mysqli_connect($hostname_localhost,$username_localhost,$password_localhost,$database_localhost);...
asked by 24.11.2018 / 02:42