nikartm

import android.content.Context
import android.graphics.Color
import android.graphics.drawable.Drawable
import android.util.AttributeSet
import androidx.swiperefreshlayout.widget.CircularProgressDrawable
import com.google.android.material.button.MaterialButton

/**
 * Loading [MaterialButton]. Showing loading spinner on the button
 *

nikartm

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
        android:maxSdkVersion="29"
        tools:ignore="ScopedStorage" />
        
  Use version 29 to work on Android 10. Need enable storage permission in app settings.

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name: Android CI

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:
  build:

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<androidx.core.widget.NestedScrollView
    android:id="@+id/nswContent"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:layout_behavior="com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

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/**
 * Sticky dialog for [RecyclerView].
 * Create instance when RecyclerView will be initialized and 
 * call [StickyDialog.show] when a user clicked by item in a list
 *
 * @author Ivan V on 31.07.2020.
 * @version 1.0
 */
class StickyDialog : DialogFragment {

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private void onClickBnvMenu() {
    bnvMenu.setOnNavigationItemSelectedListener(item -> {
        final int itemId = item.getItemId();
        if (selectedCategoryId == itemId) {
            return false;
        }

        switch (itemId) {
            case R.id.item_feed:
                // Do something

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import android.os.CountDownTimer
import java.util.concurrent.TimeUnit

/**
 * Countdown timer helper
 * @author Ivan V on 23.04.2020.
 * @version 1.0
 */
class SimpleTimer {

nikartm

Hexadecimal color code for transparency

How to set transparency with hex value ?

For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.

All hex value from 100% to 0% alpha:

nikartm

package com.github.example;

import android.content.Context;
import android.graphics.Bitmap;
import android.net.Uri;
import android.text.TextUtils;
import android.util.Log;

import androidx.annotation.Nullable;
import androidx.core.content.FileProvider;

nikartm

package ru.dasreda.dasreda;

import android.content.Context;
import android.support.design.widget.CoordinatorLayout;
import android.util.AttributeSet;
import android.widget.FrameLayout;

/**
 * @author Ivan V on 06.03.2018.
 * @version 1.0