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Generic OR instead of AND

Is it possible to generically parameterize a method accepting EITHER ClassA OR InterfaceB ?
Does Not Compile Due to | Pseudocode
public void orDoer(T someData){ // … }

i.e. instead of writing multiple method signatures, … Read more

how to take camera capture without a preview from a service or thread?

Is it possible to capture an image without showing the camera preview?, i have a requirement that i should be able to capture the image from a … Read more

Up-Sync and Down-Sync in Android?

I am working on a Point of Sale application that needs to be very good syncing mechanism. We have Magento Database.The android device have SQLite local Db. Now we need to sync in the following … Read more

Communicating with serial USB device over Android

I have one custom made device for measuring current. This device can be connected to PC and communication is done over USB. It is based on FTDI chip. I have application written in … Read more

Android ListView with RadioButton in singleChoice mode and a custom row layout

I have a ListView, which is in singleChoice mode. All I want is to display a RadioButton to the side, that when clicked highlights to say it is … Read more

How to start two animations at same time in android?

I have two linear layouts which I want to perform two different animation on both of these layouts and at the same time.
Now its working in sequential manner. i.e, … Read more

ApplicationTestCase deprecated in API level 24

I created a default empty project on Android Studio 2.1.2 with API 24. In the sample project, Google offers a depreciated class ApplicationTestCase:

This class was deprecated in API level 24. Use ActivityTestRule
instead. … Read more

Max thread number for one application?

I wanna know about max thread number for one application.
You know Thread.activeCount() returns the number of active Threads in the running Thread’s group and its subgroups.
If I can know the max number … Read more

Using HttpURLConnection and HttpsURLConnection to connect to an https?

What are the differences if I try to connect to an “https” using HttpURLConnection and HttpsURLConnection?
I was able to connect to “https” using both HttpURLConnection and HttpsURLConnection so I am … Read more

Static singleton lifetime in Android

I have some unclear situation:
Will static singletons be garbage collected after last reference holding Activity has been destroyed? Because there is no more references in Application to singleton instance. Can I then rely on … Read more