android material design lecture #2

https://goo.gl/forms/xWbhOultl5GDLDzS2

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Material Design Concepts & Implementation

What’s For Today?

Material Design

Concepts

Properties

Components

● Navigation

● Notifications

Over 1 million apps on the store

We want you to publish your app.

1 in 3 new apps is released as material!

Recap - Basic Components

FrameLayout

LinearLayout

RelativeLayout

GridView

RecyclerView (ListView)

What is Material?

We challenged ourselves to create a visual language

for our users that synthesizes the classic

principles of good design with the innovation and

possibility of technology and science - This is

material design.

Inspiration

Why Material?

Material Design

- Started as a functional bare necessity framework.

- Now it is time to pay attention to the details.

Material Design

Not a set of rules.

A set of guidelines

Very detailed, not very restrictive

Cross platform.

https://www.google.com/design/spec/material-design/

Material design principles

Metaphor - unifying theory of rationalized space and system

of motion.

Surfaces

Mobile is a medium for delivering content.

We need a container for content.

From the Real World

Properties

Paper & Ink - real world

Paper is a simple shape

Paper is colorless

Paper is constrained by the Z depth

Paper Flat never tiltted never flips over

Every pixel is a dot

Ink is restricted by the paper

Translating Paper into Device

3D world

Each layer 1 dp thickness.

Conveys relevance.

Create a consistent

illusion.

Paper & Ink

Shadows

Perceived depth

build.gradle

<android.support.v7.widget.Toolbar

android:id="@+id/toolbar"

android:layout_width="match_parent"

android:layout_height="?attr/actionBarSize"

android:background="?attr/colorPrimary"

android:elevation="4dp" />

build.gradle

Elevation

Paper & Ink

https://www.google.com/design/spec/what-is-material/elevation-shadows.html#elevation-shadows-elevation-

android-

Shadow & Lighting - example

Depth of the phone

Shadow & Lighting - example

Depth of the phone

Surfaces - In practice

Surfaces - food for thought

Bold, Graphic & Intentional - immerse the user in the

experience.

Dictionary - not hesitating to break the rules of the state or quality of conforming to conventionally accepted standards of behavior or morals.

Typography

BoldTypography

Color Hierarchy

Color Palette - example

Color Palette

●TIP : 2-3 hues of primary + 1 accent color

Palette Class

Extracting palette from image

Motion provides meaning - respect the user as the prime

mover.

Should feel natural

Animations Are Important

●Draws the eye.

● Instruct user.

●Continuous experience.

●Delightful details.

●User feedback.

Continuous Experience

Relations between screens

Shared elements.

Activity transitions.

Respect the user

Triggers & touch feedback

●Targets size : 48dp (7-9mm)

● Feedback for ALL touchable elements

○ standard button

○ Ripples

○ Selectors

Guidelines

The App Should Guide the User

Components

Toolbar

Appbar

Navigation drawer

Snack bar

CoordinatorLayout

activity_main.xml

<android.support.v7.widget.CardView

xmlns:card_view="http://schemas.android.com/apk/res-auto"

android:id="@+id/card_view"

android:layout_gravity="center"

android:layout_width="200dp"

android:layout_height="200dp"

card_view:cardCornerRadius="4dp">

</android.support.v7.widget.CardView>

activity_main.xml

<android.support.design.widget.AppBarLayout

android:layout_height="wrap_content"

android:theme="@style/AppTheme.AppBarOverlay">

app:popupTheme="@style/AppTheme.PopupOverlay" />

</android.support.design.widget.AppBarLayout>

activity_main.xml

android:layout_height="160dp"

Supports both fixed and scrollable.

activity_main.xml

<android.support.design.widget.TabLayout

android:id="@+id/sliding_tabs"

app:tabMode="scrollable"/>

activity_main.xml

<android.support.design.widget.TabLayout

android:id="@+id/sliding_tabs"

app:tabMode="fixed"/>

activity_main.xml

<android.support.v4.widget.DrawerLayout

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:id="@+id/drawer_layout"

android:layout_height="match_parent"

android:fitsSystemWindows="true"

tools:openDrawer="start">

<android.support.design.widget.NavigationView

android:id="@+id/nav_view"

android:layout_width="wrap_content"

android:layout_gravity="start"

app:headerLayout="@layout/nav_header_main"

app:menu="@menu/activity_main_drawer" />

</android.support.v4.widget.DrawerLayout>

nav_header_main.xml

<ImageView

android:id="@+id/imageView"

android:background="@color/colorPrimary"

android:paddingTop="@dimen/nav_header_vertical_spacing"

android:src="@android:drawable/sym_def_app_icon"/>

<TextView

android:text="NavDrawer"

android:textAppearance="@style/TextAppearance.AppCompat.Body1"/>

<TextView

android:text="example"/>

</LinearLayout>

activity_main_drawer.xml

android:id="@+id/nav_camera"

android:icon="@drawable/ic_menu_camera"

android:title="Import" />

android:id="@+id/nav_gallery"

android:icon="@drawable/ic_menu_gallery"

android:title="Gallery" />

</group>

</menu>

activity_main.xml

<android.support.design.widget.AppBarLayout ...>

<android.support.design.widget.CollapsingToolbarLayout

android:id="@+id/toolbar_layout"

app:layout_scrollFlags="scroll|exitUntilCollapsed"

app:contentScrim="?attr/colorPrimary">

<android.support.v7.widget.Toolbar .../>

</android.support.design.widget.CollapsingToolbarLayout>

activity_main.xml

<android.support.v4.widget.NestedScrollView

xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

xmlns:app="http://schemas.android.com/apk/res-auto"

app:layout_behavior="@string/appbar_scrolling_view_behavior"

tools:showIn="@layout/activity_scrolling"

tools:context="com.ironsource.collapsingtoolbar.ScrollingActivity">

</android.support.v4.widget.NestedScrollView>

FAB do’s and don’ts

activity_main.xml

<android.support.design.widget.FloatingActionButton

android:id="@+id/fab"

android:layout_gravity="bottom|end"

android:layout_margin="@dimen/fab_margin"

android:src="@android:drawable/ic_dialog_dialer"/>

MainActivity.xml

FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);

fab.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH)

.setAction("Action", null)

.show();

FAB - floating action button

FAB can morph.

FAB can move.

MainActivity.xml

FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);

fab.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH)

.setAction("Action", null)

.show();

~TOASTS~

snackbar

Dialogs

interruptive.

2 actions at max.

use for critical moments.

Toasts

Easily overlooked.

no actions.

use for simple alerts.

snackbar

One action.

Use for aiding the user and giving information.

Unpanic~!

What if I develop for older versions?

The Android Support Library package is a set of code

libraries that provide backward-compatible versions of

Android framework APIs as well as features that are only

available through the library APIs.

Android Support Library

Set of code libraries (function).

Provide back-wards compatibility for older versions.

Provide new features.

Android Support Library

Set of code libraries (function).

Released Independently.

Provide back-wards compatibility for older versions.

Provide new features.

build.gradle

dependencies {

compile fileTree(dir: 'libs', include: ['*.jar'])

compile 'com.android.support:appcompat-v7:23.1.1'

compile 'com.android.support:design:23.1.1'

Navigation

BackStack.

Back vs. Home

Activity A

Activity B

Activity C

Home Press

Back Press

Notifications

Status bar.

Heads up.

LockScreen.

Expandable.

Actions.

Status bar

Heads up

Lockscreen

Expandable

Actions

MainActivity.java

Intent resultIntent = new Intent(this, MainActivity.class);

PendingIntent resultPendingIntent = PendingIntent.getActivity(this, 0,

resultIntent, PendingIntent.FLAG_UPDATE_CURRENT);

MainActivity.java

NotificationCompat.Builder mBuilder = new

NotificationCompat.Builder(this).setSmallIcon(R.drawable.ic_menu_camera)

.setContentTitle("My notification")

.setContentText("Hello World!")

.setContentIntent(resultPendingIntent);

MainActivity.java

int mNotificationId = 001;

NotificationManager mNotifyMgr = (NotificationManager)

getSystemService(NOTIFICATION_SERVICE);

mNotifyMgr.notify(mNotificationId, mBuilder.build());

34th floor

Drive home safe

See you next Tuesday!

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