Open Spinner in Android - android

In my android application I am using Spinner.It is working fine.
But I want to show my spinner in different style as per mentioned link
Kindly provide me solution for the same.

Hi if you can use a 3rd party library I will recommend you to use this one. I used it and it's working fine.
https://github.com/ganfra/MaterialSpinner
Inside the repo are the steps to use it.

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How to make my react-native android app appear in the share list of another android app

Here, I am adding the image for more clarification of my problem statement.
You're looking to create a share activity for your Android app.
react-native-share-extension should provide you with a good starting point (as well as providing support for iOS if you're working on a Mac).

Confused with MainActivity.java in android studio

I'm fairly new to java and android studio in general,and I'm trying to follow a tutorial on YouTube on how to make a simple android calculator by Andy York. I made it to part 2 of 2 until he started coding in MainActivity.java, when I noticed that ours were different and that I have stuff like "FloatingActionButton"and "SetSupportActionBar" which he doesn't have and which is confusing because if erase those then everything will mess up. I think it may have been because of an Android Studio update since his video? I'm trying to make everything neat like his but I don't know how. I hope this makes sense and any help would be appreciated. Thanks.
When creating new project in Android Studio use "Empty Activity" template instead of "Basic Activity". The "basic" one does add a lot of things, like a floating action button, which often isn't helpful.
Those are coming because you select a that theme. So, Select the Empty Activity. Then nothing will make problem .

Use ChromeView in Android App

I'm trying to use ChromeView on my Android app in order to run some preload html. I follow this tutorial https://github.com/pwnall/chromeview
I can import it correctly to my project, but i can't see the ChromeView component on the Pallete, as it is mentioned there, so my app crashes because "Class Not Found" exception is raised.
Thanks in advise
I just implemented this and It worked. Hopefully it helps someone.
Here's how I did it:
Instead of looking for ChromeView on the Pallete, I would recommend that you just type it in the XML. Much quicker.
Here's how:
BUT, if you prefer to do it in the design mode, look for Custom View on the Pallete.
And when you click on it, it will show all the custom views available from the linked libraries, etc. Pick ChromeView from the list.
If ChromeView is not on that list and if you manually type it in XML and give you error, the chromeview package isn't linked correctly.

Where can get the Android source code?

Such as when I use the ArrayAdapter class, I want to know what is be done in the class. Sometimes I want to go the source code to find answer.
So, my question is where can get the source code ?
http://source.android.com/source/index.html
http://grepcode.com/snapshot/repository.grepcode.com/java/ext/com.google.android/android/2.3_r1/
https://android.googlesource.com/platform/frameworks/base/+/froyo-release/core/java/android/widget/ArrayAdapter.java
is the link for ArrayAdapter used in the latest Froyo release from Googles open source repository. You can use the navigation links on that page to get to the other parts of the available source code and other releases of Android.

How do I see the core Android classes?

I am trying to look inside a couple of Android core classes to see about overriding some methods. I have looked into getting the Android source code, but the process described on the Android dev site is all about installing and setting up some kind of development environment. This is not necessary to me. I just want to open a class or two in a text editor and look at its contents. Does anyone know if this is possible without going through the multitude of steps described on the Android dev forums?
The easiest way is to use Google Code Search. You just have to try a search like Activity.java android and you can see the source code of that class. It even has an outline inspector:
You can download the entire source with git our just look it up as a reference on the git site. Here is a link to the sdk code:
https://android.googlesource.com/platform/frameworks/base
Another option is to use http://grepcode.com/ and perform a search such as "android ViewGroup". I've really enjoyed the style of using grepcode.

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