Questions tagged as 'android'

Tagged questions
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how to hide an item in the menu

I created a menu with buttons to save, to go back and to add, and I would like that when I clicked on add it was hidden or that it is disabled. I tried to use MenuItem item = menu.findItem(R.id.my_item); that I saw in this topic...
asked by 02.01.2018 / 20:02
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To serve ExampleUnitTest and ExampleInstrumentedTest in Android Studio?

Hello, I'm learning to develop on Android and would like to know the usefulness of these files and how Android uses them. I noticed that some applications sometimes do not have these files.     
asked by 10.01.2018 / 16:25
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Replace part of string with drawable or image

I get the database a string in formarto "text text text ??? text text" and I need to transform the "???" in an image or some character, the ideal would be an image or drawable that I can customize better. From what I've seen, replace only works...
asked by 15.01.2018 / 13:17
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How to create project installation done in the android studio

I created a project in Andoid Studio, run it on the virtual machine right now, I would now like to "compile" it to install on a real mobile. How do I do this? I create a file and step to the mobile? Do I have to put it on Google Play?     
asked by 13.10.2015 / 01:02
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How to get information from Satellites via LocationServices

There are app's that show how many satellites your GPS managed to communicate. Here's an example: link I've seen some examples where GpsStatus.Listener is used in LocationManager . But nowadays instead of Locati...
asked by 27.10.2016 / 18:46
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How do I publish a specific APK for Android versions above $ API?

I have an app in the Play Store that uses the Crosswalk plugin. However, for Android versions of 5.0 upwards, I want to be able to make a build without the plugin of Crosswalk. Just getting the versions below 5.0 with the build that includ...
asked by 14.10.2016 / 03:57
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How to use RealmObject class

I'm working on an Android project and trying to use the RealmObject class is not recognized even though I import the io.realm.RealmObject package. Is this class no longer available?     
asked by 15.12.2016 / 12:35
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Pass an int array 2d to another activity

I have this array : int[][] meuArray= new int[5][3]; How do I send this array to another activity? If it was a array 1d just make intent.putExtra("Array", meuArray); to send and the array and do array = getInten...
asked by 09.12.2016 / 21:31
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How do I restart a service to call oncreate again?

Hey guys, I have a service and I have all his logic in OnCreate. The problem is that I need it to go through the oncreate again when I perform an interaction in my activity. I've tried using stopService(new Intent(this, YourService.clas...
asked by 15.11.2016 / 15:38
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Error using Lock Screen

I'm trying to block the screen with the following code: protected void onBloquear(View view) { DevicePolicyManager mDPM = null; mDPM.lockNow(); } Source: link But it gives the following error. Caused by: java.lang.NullPointe...
asked by 14.12.2016 / 23:41