Zhuinden

/*
 * Copyright 2020 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

ichenhe

/*
 * Copyright 2019 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

y-polek

import android.arch.lifecycle.LiveData
import android.arch.lifecycle.MediatorLiveData
import android.arch.lifecycle.MutableLiveData

fun <X, Y> LiveData<X>.map(func: (X?) -> Y?): MutableLiveData<Y?> {
    return MediatorLiveData<Y>().apply {
        addSource(this@map) { x -> value = func(x) }
    }
}

damianpetla

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true">
        <layer-list>

            <!-- Drop Shadow Stack -->
            <item>
                <shape>
                    <padding
                        android:bottom="1dp"

MarsVard

put card.xml in your drawables directory, put colors.xml in your values directory or add the colors to your colors.xml file.


set the background of a view to card,
as you can see in card.xml the drawable handles the card margin, so you don't have to add a margin to your view


 ``` xml
<View 
  android:layout_width="fill_parent"