Questions tagged as 'android'

Tagged questions
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Perform a Blackup from the database to the sd [duplicate]

How can I make a backup of the database to the sd card in android studio. I have the database made, but I do not know how to implement a backup and that is in the sd     
asked by 27.06.2017 / 21:11
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Save a database on the sd card

How can I save my database in the sd of my cell phone? Here I have it created: public class DB extends SQLiteOpenHelper{ String tabla ="CREATE TABLE Datos (Id INTEGER PRIMARY KEY AUTOINCREMENT, N text, C text, R1 INTEGER, R2 INTEGER, R3 INTEG...
asked by 10.03.2017 / 04:26
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Upload images to a mysql database from android

I use these two methods to try to insert an image to a database from an Android application, my problem is that the images are not inserted in the database, the webservices if it works because I use it to do tests in HTML, the one that does not...
asked by 27.10.2016 / 21:56
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How to return between various Android activities

I have a problem I hope someone can help me. I have several activities Main Activity, Activity 1, Activity 2, Activity3 Primal Activity let's say it's a list and activities 1 to 3 are forms, in activity3 when a save ends I need to retur...
asked by 16.02.2018 / 01:39
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Change of date and time android

Someone knows how I could know when someone has changed the date and time of an Android phone. Is it to say get some log or show some notification? Thanks in advance     
asked by 31.10.2017 / 17:05
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Open Apk with another Apk [duplicated]

I am working with Android / ios Applications. I would like to know if it is possible to run an application B using an Application A, with a button     
asked by 11.12.2018 / 14:06
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How to put an activity on another activity

I am developing an app that when I press a floating button I want another activity to come up. Something like this:     
asked by 22.10.2018 / 00:30
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Start date to today instead of to 1900

When entering the calendar, it starts in 1900, how can I start it with today's date? package com.example.lu; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.widget.Button; import android.widget.EditTe...
asked by 24.11.2017 / 22:25
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AdMob ads really do not appear

the ads do not appear to me, if I put a test id, yes. Is it true that for the real ads to appear first the app must be uploaded to the PlayStore ?? Test ads work, but not really. The ids I put them with XXX to not show them but they are th...
asked by 26.12.2018 / 18:58
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Change signature of Google play?

I'm new to this Apk world and I have a developer account. With the changes of Google Play, since the last time I uploaded an app, I put the signature of Google Play to a signed apk and I get an error ... How do I solve it?     
asked by 05.05.2018 / 22:18