Show copied text in a small window android - android

I am a newbie in android.
My question is:
Whenever a user copy something without opening the app i want to show the word into a small window which the user can move the window wherever they want.
I have read many article about listening the clipboard manager.I understand that.
But problem is i dont know how to show this into a small window which can be moved anywhere without opening the main app.
I have searched a lot but cant find anything.
Please suggestion me some article or the way to achieve my goal.
Here is the link which is similar to my goal .
LINK

Create a service as Facebook Messenger has done its Chat Heads. Look for example here

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How to display a.txt file from a URL and make each item clickable?

I am having a little trouble in making fully functional App where Displaying .txt file from url in android app , making each displayed item clickable with message or link or anything .
If someone already know any examples anywhere where i can look up please give links.
Please kindly help .
Welcome to Stack overflow.
Generally questions like this are not allowed as the site doesn't work like that. Before asking a question do some research, make a few attempts, then show us what you have done then we can assist you.
Just a tip, break down what you are trying to do into bites.
First look at reading your file, here's an example to get you started by reading the file into an array list.
Next work on displaying the list by displaying it in an recyclerview, here's a nice example to get you started. The recyclerview will allow the items to be clickable and you can customize the click event to show messages like you require.
Good luck.

Autofill forms on Android from password manager

I want to build an password manager for Android. The Problem is I don't know how to get it to fill login forms of third party applications. I know this is working, because LastPass does exactly what I want.
I don't want a complete solution ;) I just need a point to start. Secondly I don't want to replace the system keyboard like Keepass2Android does. I googled nearly two days about this but I can't get the right keywords to find a starting point.
So the questions are:
How do I detect login forms on the active activity?
How do I paste the credentials to this inputs?
If you don't know the id from a TextView then you need to use getIdentifier() function. You can find a potential usage here.
When you will get the id from your TextView you can paste a text in your form with something like this
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Android: How to implement simple "rate it" preferences button?

I've googled and searched for an answer to my question but all I can find is people asking about rating systems that pop up a dialogue after a number of launches.
My application is for a live wallpaper so I expect most people to launch and set it once.
I just want a preference button that takes users as directly as possible to the app rating screen.
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Here is code you are looking for
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Add this library in your project and you should be set.

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I am trying to make a Whatsapp emoji application and I'd like to provide my users a direct access to the app via whatsapp, and the best way of doing it that I've seen is what other emoji apps in the market do, as you can see in the following image:
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Implement QSB like suggestions in android app

I need to give a search box in my android app. As the user starts typing in the search text, I need to show him relevant suggestions. (As we see in the google-search widget on the home screen. If we see from the logs, com.android.quicksearchbox/.SearchActivity is started with android.search.action.GLOBAL_SEARCH intent and it searches in following: corpora:[web, apps, com.android.contacts/.activities.PeopleActivity]).
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I think i figure it out myself.
Went through Searchable Dictionary code & QuickSearchBox code in android source.
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Google Suggest API provides suggestions as the user enters the text.

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