How to Retrieve Bitcoin Applications in Production UTXOs

AFIK, UTXO an address can not be retrieved with Bitcoin-Core, without importing the address into the wallet.

  1. How can an application in production receive UTXO?
  2. Does the entire application use indexed databases like Insight or Abe to get UTXO?
  3. Is there a way to retrieve UTXO from the Bitcoin core without importing the address into the wallet?

Does Gmail need attention? – Stack exchange of web applications

I open Gmail and see that my emails are labeled Category/Primary It's still loading in my primary inbox. After a few seconds, it stops loading and suddenly a new message appears above the primary e-mail list: A message named Category/Forum I check the labels on this message that do not exist Category/Primary Label, it is not marked, I have disabled Include starred in Primary,

I update the page, the same thing happens again: the message is not there while it is still loading (the spinner is spinning) and after a few seconds is added to the top of the list.

Most annoying is that on my Android I even see a notification about this message. My Android only displays notifications for emails I receive on my primary tab.

What is this message? If it is not marked as primary, why is it on the primary tab? If it's marked primary, why can not I see this label? Why does not it appear when first rendering the message list and does it suddenly appear after a few seconds? Why does this only happen for certain messages from Qts Jira and Kubernetes Github? I get a lot of notifications from Github and Jira, but messages only from certain threads in them end up that way and not even all messages from those threads.

Does Gmail need my attention? Should I reward Gmail if it works well and punish it if it conflicts with my labels?

Applications – Simple Android calculator that gives wrong results

I just started learning Android app development. As a beginner project, I build a simple calculator app, but every time I execute it, all the other functions besides the addition function will give false results.
Here is the Java code I wrote. (MainActivity.java)

package com.example.calc;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    TextView result; 
    EditText number1, number2;  
    Button add;
    Button sub;
    Button mul;
    Button div;

    public float result_num = 0;
    public int num1;
    public int num2;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        result = (TextView) findViewById(R.id.result);

        number1 = (EditText) findViewById(R.id.number1);
        number2 = (EditText) findViewById(R.id.number2);
        //numbers
        add = (Button) findViewById(R.id.add);
        sub = (Button) findViewById(R.id.sub);
        mul = (Button) findViewById(R.id.mul);
        div = (Button) findViewById(R.id.div);

        ///////////Calculation part///////////

        add.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                num1 = Integer.parseInt(number1.getText().toString());
                num2 = Integer.parseInt(number2.getText().toString());
                result_num = (num1 + num2);
                result.setText(String.valueOf(result_num));

            }
        });
        sub.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                num1 = Integer.parseInt(number1.getText().toString());
                num2 = Integer.parseInt(number1.getText().toString());
                result_num = (num1 - num2);
                result.setText(String.valueOf(result_num));
            }
        });
        mul.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                num1 = Integer.parseInt(number1.getText().toString());
                num2 = Integer.parseInt(number1.getText().toString());
                result_num = (num1 * num2);
                result.setText(String.valueOf(result_num));
            }
        });
        div.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                num1 = Integer.parseInt(number1.getText().toString());
                num2 = Integer.parseInt(number1.getText().toString());
                result_num = (num1 / num2);
                result.setText(String.valueOf(result_num));
            }
        });
    }
}

The XML code for the app. (Activity_main.xml)

I use a linear layout




    

    

    

    

Please help me.
Thanks.

How can I prevent my GitHub applications from running frequently?

I have to log in to github.com very often. I was previously logged into the browser, but will visit GitHub again sometime in the future and I'm not logged in. How can I stay logged in to GitHub for longer?

At https://github.com/settings/security, since the start of the table on August 29, 12 "user.login" events have been counted, averaging more than once a week, requiring my password and TOTP code ,

I have many devices (multiple work and personal devices with different chrome profiles, no more than 11 sessions, but more often around 6), but I hope that does not cause the problem.

When I open the cookies for github.com, I see the user_session Cookies are only set for 15 days in the future. How long does the standard login to GitHub take? Maybe there is a button to increase that? (I would be willing to change my 2FA option to a security key if it took at least 90 days to log in.)

Applications – How do I open an offline website on Android?

I have a directory with some .html Files, some .jpgbe index.html File and some other stuff. If I pull that index.html In Chrome (or other browsers) on my desktop PC, this static / offline website is displayed in the browser and I can navigate the site without any problems.

If I go to the same directory in Android Pie and open the same index.html File in Android Chrome I get the error message "Can not find file". I tried other Android browsers with the same result.

How can I open a simple offline static HTML web site on Android? Do I have to use a specific app or browser?

Web Development – What are programs (applications, games) and why are they needed?

Today I asked myself Why do I write programs? And only one answer comes to my mind: automation, automation of routine and the needs of people. I think it's good, but I think there should be some more automation.

So my questions are: Why do we write the programs (applications, games, websites, etc.)? What is the purpose of the programs?

Applications – Mirror actions on hundreds of Android emulators

I have several hundred Android emulations. I want an application that allows me to mirror actions that I take on a single device to all other devices. That is, when I click on a symbol in x, y on my main unit's screen, the same action should be taken on all my emulations. I looked at several Android Mirroring software but none has met the requirements that I have. For example, most mirroring tools, such as APowerMirror from Vysor, require the emulations to be on the same Wi-Fi connection (which does not work with emulators), or USB debugging is enabled so that the devices are physically connected (even emulators do not work) ). Also, most programs do not support the number of devices I want to emulate.

I was hoping someone knew about a mirroring application that did not have the limitations mentioned above. I have to think that there is a solution, but I'm stuck.

For reference, I use Bluestacks as an emulator for all Android instances.

Applications – Track push notifications I get on my Android phone

I'm trying to set up a tracker to store text messages and push notifications I receive on my phone in a Google Sheets spreadsheet. I've already found a way to route any received SMS to a spreadsheet using IFTTT. Unfortunately, IFTTT does not seem to track push notifications.

Question: (If possible) How do I set up tracking of push notifications on an Android phone?