For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.
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| <?xml version="1.0" encoding="utf-8"?> | |
| <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" | |
| xmlns:app="http://schemas.android.com/apk/res-auto" | |
| xmlns:tools="http://schemas.android.com/tools" | |
| android:layout_width="match_parent" | |
| android:layout_height="match_parent" | |
| tools:context=".ui.MainActivity"> | |
| <ImageView | |
| android:id="@+id/ivFooter" |
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| class AppExecutors @VisibleForTesting constructor( | |
| private val diskIO: Executor, | |
| private val networkIO: Executor, | |
| private val mainThread: Executor | |
| ) { | |
| companion object { | |
| private const val THREAD_COUNT = 3 | |
| } | |
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| /* | |
| * Copyright (C) 2017 The Android Open Source Project | |
| * | |
| * Licensed under the Apache License, Version 2.0 (the "License"); | |
| * you may not use this file except in compliance with the License. | |
| * You may obtain a copy of the License at | |
| * | |
| * http://www.apache.org/licenses/LICENSE-2.0 | |
| * | |
| * Unless required by applicable law or agreed to in writing, software |
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| /** | |
| * Used as a wrapper for data that is exposed via a LiveData that represents an event. | |
| */ | |
| open class Event<out T>(private val content: T) { | |
| var hasBeenHandled = false | |
| private set // Allow external read but not write | |
| /** | |
| * Returns the content and prevents its use again. |
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| fun View.show() { | |
| visibility = View.VISIBLE | |
| } | |
| fun View.hide() { | |
| visibility = View.GONE | |
| } | |
| inline fun <T : View> T.showIf(condition: (T) -> Boolean) { |
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| // to use it. | |
| private val preferencesManager by lazy { | |
| SharedPrefreencesManager(context) | |
| } | |
| private val key_uname = "username" | |
| preferencesManager.add(key_uname, "isfaaghyth") | |
| ... |
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| sealed class Resource<out T> { | |
| object Loading: Resource<Nothing>() | |
| data class Success<out T>(val data: T) : Resource<T>() | |
| data class Failure(val exception: Exception) : Resource<Nothing>() | |
| } |
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| import android.view.View | |
| import androidx.recyclerview.widget.RecyclerView | |
| abstract class BaseViewHolder<T>(itemView: View) : RecyclerView.ViewHolder(itemView) { | |
| abstract fun bind(item: T) | |
| } |