Questions tagged as 'android'

Tagged questions
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Error mixing versions in the Gradle App with Firebase libraries

I'm trying to synchronize the libraries 'com.google.firebase:firebase-core:16.0.4' and 'com.google.firebase:firebase-database:16.0.4' in the Gradle but I skip the error of those libraries do not correspond to the others....
asked by 31.10.2018 / 09:47
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Map in Android, only allow to be located in a delimited radius

I want to do something like this, so that the user can move the point only in a delimited radius (previously establishing a point)     
asked by 31.10.2018 / 02:25
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UnsatisfiedLinkError | conflict between C native libraries on Android

I am working to implement a fingerprint reader in my application, for this I use a native library in C and so far everything has worked well, I can get the image of the fingerprint and format it, etc. But I also need to evaluate the quality of...
asked by 31.10.2018 / 01:05
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how can I upload an image from android to my database but in a column that is longblob?

I tried to upload an image to my database but it was inserted in the longblob column but I could not find it here my php code: $host_name = "localhost"; $database = "base_olx"; $user = "root"; $password = ""; $con = mysqli_connect($host_nam...
asked by 30.10.2018 / 23:47
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Problem with uploading images in jpg format from android to mysql server, just upload png format

Good evening I have a problem happens that I am saving the images in my database from my android in a longblob column so then what happens esque saves me only PNG formats, but I when selecting images from my android app in jpg format Well, does...
asked by 31.10.2018 / 04:52
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alarmManager does not work on android 8

I have an app that needs to be launching notifications 2 times a day in a specific time, as if it were a reminder. Currently this functionality I'm doing with alarmManager, the problem arises with phones with android 8 since this does not allow...
asked by 31.10.2018 / 19:11
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My app stops when I install it on my mobile

I am developing an App and it shows no error when compiling and installing it on my mobile ... but when executing it, it sends me the message that "it is presenting problems." then it stops working. I leave my app gradle and my manifest xml...
asked by 30.10.2018 / 18:12
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Error linking an adapter callback to my recycler

I hope you can help me, I have an adapter of a recycler in which I want to send a callback to its fragment that contains it, but I have a problem when linking the adapter. MY ADAPTER public Cartadapter2(Context context, List<Cart> car...
asked by 29.10.2018 / 18:35
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Erorres with material design and android studio 3.2.1

I have the android studio 3.2.1, synchronize the design material with the following version: implementation 'com.android.support:design:28.0.0, when I insert a: I get an error I do not know what to do if there is an answer I would appreciate it...
asked by 28.10.2018 / 03:29
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How to simulate the button to take a picture of a selfie stick? [closed]

Hi, I would like to know how the button of a selfie stick works since it is capable of taking a photo as if pressing the button to lower the volume. I tried to simulate this to take pictures with other mobile buttons but all the solutions need t...
asked by 26.10.2018 / 11:32