Questions tagged as 'android'

Tagged questions
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Android Studio I can not represent a value in another activity

EDITED Good! The problem I'm having is that from my Data Base class I want to pass the value of 3 fields to another class called Choose Care. I managed to pass the value of two fields but I could not with the third. The field in question is...
asked by 23.11.2018 / 19:34
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help with sending data to two activitys

My problem is that I do not know how to direct the data to two activitys of the selected item ... I am a newbie and I was testing with the if and it seems to be wrong because I can not select the other items. viewHolder.setOnClickListener(new...
asked by 29.11.2018 / 15:54
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Message before installing APK

Best regards. I have a question, when installing an APK of an application, it is generating the following message: I'm testing on an Alcatel device with Android 8.1.0. Why this message?     
asked by 29.11.2018 / 13:13
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bluetoothBLE connection problems

Hello and very good fellow / ras programmers! I have the following dilemma, I am developing a hybrid application (IOS/Android) in Xamarin to connect with devices via bluetooth , but when I try to make the connection with a rasperry...
asked by 23.11.2018 / 16:54
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Alternative to abortBroadcast, Android Studio

I have been looking for a way to block the SMS to the default inbox on mobile phones when I am running the application (that I have to do only at a certain number for example, issuer 546513224). In the search I found that before it could be done...
asked by 23.11.2018 / 17:11
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Error using Volley in Android Studio

Hello as I understand to send a url to a web service parameters are used to use them in the query to the database. But in the case of wanting to bring everything from a table and not send parameters how would the JsonObjectRequest be used? Thank...
asked by 22.11.2018 / 16:53
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Problem in ClassCastException from RelativeLayout $ LayoutParams to RecyclerView $ LayoutParams

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 / 11:17
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I do not know how to edit with an SQL Lite base on Android

I am trying to make an application in which one of the sections I have done an "Edit" button which I want to edit a "recipe" of the database. I have tried and I do not know very well how to do it (I am learning). Haber if someone gives me some l...
asked by 24.11.2018 / 11:21
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Send HTTP POST REQUEST in JSON format to the firebase API

I am developing a APP of sending PUSH , from a APP I could send a HTTP POST to API of firebase , this means that when this message arrives at the API it is entrusted to send a PUSH to all the nodes...
asked by 23.11.2018 / 15:49
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Print QR android

I am trying to print a QR code for a thermal printer. String I print them without problems converting to byte array but when passing a bitmap converted to array of bytes I get all the rare characters and letters. I have read that it may be be...
asked by 22.11.2018 / 13:23