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Questions tagged [android-application-class]

Extending Android's Application class can be very useful to maintain global state, initialise a module, and so on, before any other part of your code runs.

Android Developer Docs say:

Base class for maintaining global application state. You can provide your own implementation by creating a subclass and specifying the fully-qualified name of this subclass as the "android:name" attribute in your AndroidManifest.xml's <application> tag. The Application class, or your subclass of the Application class, is instantiated before any other class when the process for your application/package is created.

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how should i add sound in android studio which plays on button click

this is my code fun onclick(view: View) { val numberRandom = (1..6).random() textView1.text = "$numberRandom" var mediaPlayer: MediaPlayer? = MediaPlayer.create(this, R.raw.rolll.wav) mediaPlayer?.start() // no need to call…
sourav bhatia
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Reading data from Android App using bluetooth

I have Java code to receive data in Android App via Bluetooth like the attached code Java Code so readMessage will equal = {\"Pin\":\"A4\",\"Value\":\"20\"},{\"Pin\":\"A5\",\"Value\":\"925\"},{\"Pin\":\"A0\",\"Value\":\"30\"} So I want to take only…
Ibrahim Abd El Rahman
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Using an alternative Application() class for unit testing in android

I have created an Application object which turns off Stetho. I want to use during my tests, but I don't know how swap it for the original Application class. I suppose I have to add it to the android-manifest before testing, or mock one…
Tomk07
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Create application class dynamically in Android

I have a 3rd party library that exposes its functionality through a listener interface. The requirement of the library is that it gets initialized in the onCreate of the custom Android Application class. public class CustomApplicationWithListener…
luckysing_noobster
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Custom AppComponentFactory Fails to Instantiate Application

I am attempting to implement a custom AppComponentFactory to create my Application and Activity instances using non-zero arg constructors (Dagger based constructor dependency injection), but my app fails to launch because my custom Application…
Charles A.
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Run time permission from application

I want to ask for permission from the application class. How can I ask permission for accessing the device ID? I cannot ask for permission from activity as it crashes before starting the splash screen activity. The following code is part of splash…
Shraddha Sharma
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How to grant permission in Application class Xamarin.Android?

I want to grant camera permission for the application using my Application class in my Xamarin.Android project. But I cannot call ActivityCompat.RequestPermissions(this, _mPerms, 1); within my Application class since this should be an Activity. So…
Randi
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Can I expect my application's constructor to get executed completely before my service methods are invoked?

Coming straight to question, App_A -> binds with service in App_B App_B tries to init few values in it's application class constructor Can I expect App_B's Application class constructor to get executed completely before the service methods…
Tom Taylor
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getApplicationContext() returns null when application instance is recreated

I'm trying to launch an activity using application's context something like this, This works public class MyApplication extends Application { public static Context mContext = null; public MyApplication() { mContext = this; } …
Tom Taylor
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Why my application class which extends android.app.application is not working?

I have to call a print method from the test class whenever my application starts. I have called this print method from onCreate() of MyApplication class which extends android.app.application class. In the print() method, I am displaying a toast…
Shubh.J
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How can I use two android application classes for UI and Android-service?

Currently in my app, I have an Android application class & in there I'm doing some initializations that use in application UI and some features. Also, I have an Android service, that runs in backgrounds with some events that doesn't need those…
Kavimal
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Risk of Broadcast Receiver leak when registered in Application class

I am registering a Broadcast Receiver in the app's Application class' onCreate(). I basically want the receiver to be active as long as the app's process is active. In this was, any component of the app getting triggered will result in the receivers…
iammrmehul
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Robolectric dosen't calling Application.onCreate(), and I cannot get context

Hello I have the following project structure --App |--SDK1 |--SDK2 In app I have some test for check SDK1 and SDK2. In SDK I have a singleton pattern only to set the context by the application class that is in App. And the context is set in…
Tlaloc-ES
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Application crash when i add the name in application tag in manifest file

I am working on notification so i want to create channels at start app when oncreate method is called. SO when i add the name of the application class in application tag of Application class. When i remove it run fine. I ams using notification for…
Farooq Ahmad
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Application in kotlin enum

Is it safe if I use application in a kotlin enum? Like this: enum class Labels(title: String, type: Int) { PERFORM(App.application.getString(R.string.perform), 0), DUTY(App.application.getString(R.string.duty), 1), ... ... }
liumingyi
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