Questions tagged as 'android'

Tagged questions
1
answer

Notifications real-time chat on android with firebase

We are developing an app that uses real-time chat between users (how to WhatsApp) and we have the doubt to know how to make us notify (and sound) each time a user writes to another. The messages arrive between users, but they do not know they no...
asked by 11.08.2018 / 09:52
1
answer

AsyncTask class in android Java with its methods does not complete the process

I have a process that I want to run in the background, it works but at the end I want it to go to the next activity but it does not, it gives me a black screen and when it finishes the task goes to the activity: within the class I have several c...
asked by 22.08.2018 / 22:06
1
answer

receive data from one activity to another automatically

I have an activity and a PopUp window that comes up when I click on a button, this window has a button, which detects your click from the class of the window, what the button does is pass some data to the main activity and close the popup with t...
asked by 22.08.2018 / 22:48
0
answers

how to validate data in an editext using web service

When entering data in an editext, I must verify if that data already exists. I have the following code segment, but I get an error and I do not know why. I appreciate your comments telef.setOnFocusChangeListener(new View.OnFocusChangeListener(...
asked by 13.08.2018 / 01:15
0
answers

Massive sending of sms android [closed]

I have an android app for massive sending of sms and it works correctly, if it does the sending function and it appears in the sms output tray, but the messages are not sent, it is not due to lack of balance or signal of the equipment since I ha...
asked by 08.08.2018 / 22:25
0
answers

Error in android studio when trying to lift service by BroadcastReceiver android 5.1 lollipop

I'm doing tests with different services and connections and in the logcat it shows me the following error:    Before Android 4.1, method int   android.support.v7.widget.DropDownListView.lookForSelectablePosition (int,   boolean) would...
asked by 08.08.2018 / 16:49
0
answers

Trying to generate an apk in Android Studio of an app that includes CordovaLib migrated from Ionic gives error

Good I have a problem with a Migrated App from Ionic to Android Studio. The App includes CordovaLib inside but as a module when importing it. When I try to generate .apk it gives me the errors of the image, I have tried a lot of things but I do...
asked by 04.08.2018 / 09:51
0
answers

How does JobIntentService work for Android Oreo and pre Oreo?

I was researching and I read that it is necessary or better said, the implementation of JobIntentService due to the appearance of android Oreo and its limitations or new restrictions with respect to services in Background...
asked by 10.08.2018 / 13:43
2
answers

Expected a List while deserializing, but got a class java.util.HashMap Firebase Android

I'm surprised to have this failure because it happens to me just initialize the app and it never happened to me. The fault can be something of the json? I leave the code where the fault occurs public void datos() { navMenuName.setText( us...
asked by 05.08.2018 / 15:21
0
answers

Combobox and picker in Xamarin Forms do not load when leaving the page and enter again

I am developing an application with Xamarin Forms. On one page I have a combobox and a picker. The combobox is autocompletable. When I start the app for the first time everything works fine, the combobox autocompletes the words and the picker sh...
asked by 03.08.2018 / 19:05